diff --git a/fastdeploy/vision.h b/fastdeploy/vision.h
index c9719cc9ea..82f06e0036 100755
--- a/fastdeploy/vision.h
+++ b/fastdeploy/vision.h
@@ -24,7 +24,7 @@
 #include "fastdeploy/vision/detection/contrib/yolov5/yolov5.h"
 #include "fastdeploy/vision/detection/contrib/yolov5lite.h"
 #include "fastdeploy/vision/detection/contrib/yolov6.h"
-#include "fastdeploy/vision/detection/contrib/yolov7.h"
+#include "fastdeploy/vision/detection/contrib/yolov7/yolov7.h"
 #include "fastdeploy/vision/detection/contrib/yolov7end2end_ort.h"
 #include "fastdeploy/vision/detection/contrib/yolov7end2end_trt.h"
 #include "fastdeploy/vision/detection/contrib/yolox.h"
diff --git a/fastdeploy/vision/detection/contrib/yolov5/postprocessor.cc b/fastdeploy/vision/detection/contrib/yolov5/postprocessor.cc
index dd61efb002..4fe01dfeb8 100755
--- a/fastdeploy/vision/detection/contrib/yolov5/postprocessor.cc
+++ b/fastdeploy/vision/detection/contrib/yolov5/postprocessor.cc
@@ -103,9 +103,9 @@ bool YOLOv5Postprocessor::Run(const std::vector<FDTensor>& tensors, std::vector<
     float ipt_h = iter_ipt->second[0];
     float ipt_w = iter_ipt->second[1];
     float scale = std::min(out_h / ipt_h, out_w / ipt_w);
+    float pad_h = (out_h - ipt_h * scale) / 2;
+    float pad_w = (out_w - ipt_w * scale) / 2;
     for (size_t i = 0; i < (*results)[bs].boxes.size(); ++i) {
-      float pad_h = (out_h - ipt_h * scale) / 2;
-      float pad_w = (out_w - ipt_w * scale) / 2;
       int32_t label_id = ((*results)[bs].label_ids)[i];
       // clip box
       (*results)[bs].boxes[i][0] = (*results)[bs].boxes[i][0] - max_wh_ * label_id;
diff --git a/fastdeploy/vision/detection/contrib/yolov5/postprocessor.h b/fastdeploy/vision/detection/contrib/yolov5/postprocessor.h
index a1479dd940..88f9400fa2 100755
--- a/fastdeploy/vision/detection/contrib/yolov5/postprocessor.h
+++ b/fastdeploy/vision/detection/contrib/yolov5/postprocessor.h
@@ -55,7 +55,7 @@ class FASTDEPLOY_DECL YOLOv5Postprocessor {
   /// Get nms_threshold, default 0.5
   float GetNMSThreshold() const { return nms_threshold_; }
 
-  /// Set multi_label, default true
+  /// Set multi_label, set true for eval, default true
   void SetMultiLabel(bool multi_label) {
     multi_label_ = multi_label;
   }
diff --git a/fastdeploy/vision/detection/contrib/yolov5/preprocessor.cc b/fastdeploy/vision/detection/contrib/yolov5/preprocessor.cc
index 112a4d4d5d..846e251316 100755
--- a/fastdeploy/vision/detection/contrib/yolov5/preprocessor.cc
+++ b/fastdeploy/vision/detection/contrib/yolov5/preprocessor.cc
@@ -24,7 +24,7 @@ YOLOv5Preprocessor::YOLOv5Preprocessor() {
   padding_value_ = {114.0, 114.0, 114.0};
   is_mini_pad_ = false;
   is_no_pad_ = false;
-  is_scale_up_ = false;
+  is_scale_up_ = true;
   stride_ = 32;
   max_wh_ = 7680.0;
 }
@@ -50,7 +50,9 @@ void YOLOv5Preprocessor::LetterBox(FDMat* mat) {
     resize_h = size_[1];
     resize_w = size_[0];
   }
-  Resize::Run(mat, resize_w, resize_h);
+  if (std::fabs(scale - 1.0f) > 1e-06) {
+    Resize::Run(mat, resize_w, resize_h);
+  }
   if (pad_h > 0 || pad_w > 0) {
     float half_h = pad_h * 1.0 / 2;
     int top = int(round(half_h - 0.1));
@@ -67,19 +69,6 @@ bool YOLOv5Preprocessor::Preprocess(FDMat* mat, FDTensor* output,
   // Record the shape of image and the shape of preprocessed image
   (*im_info)["input_shape"] = {static_cast<float>(mat->Height()),
                                static_cast<float>(mat->Width())};
-
-  // process after image load
-  double ratio = (size_[0] * 1.0) / std::max(static_cast<float>(mat->Height()),
-                                            static_cast<float>(mat->Width()));
-  if (std::fabs(ratio - 1.0f) > 1e-06) {
-    int interp = cv::INTER_AREA;
-    if (ratio > 1.0) {
-      interp = cv::INTER_LINEAR;
-    }
-    int resize_h = int(mat->Height() * ratio);
-    int resize_w = int(mat->Width() * ratio);
-    Resize::Run(mat, resize_w, resize_h, -1, -1, interp);
-  }
   // yolov5's preprocess steps
   // 1. letterbox
   // 2. convert_and_permute(swap_rb=true)
diff --git a/fastdeploy/vision/detection/contrib/yolov5/preprocessor.h b/fastdeploy/vision/detection/contrib/yolov5/preprocessor.h
index b3559685db..f0cf438df0 100755
--- a/fastdeploy/vision/detection/contrib/yolov5/preprocessor.h
+++ b/fastdeploy/vision/detection/contrib/yolov5/preprocessor.h
@@ -52,6 +52,15 @@ class FASTDEPLOY_DECL YOLOv5Preprocessor {
   /// Get padding value, size should be the same as channels
   std::vector<float> GetPaddingValue() const { return padding_value_; }
 
+  /// Set is_scale_up, if is_scale_up is false, the input image only
+  /// can be zoom out, the maximum resize scale cannot exceed 1.0, default true
+  void SetScaleUp(bool is_scale_up) {
+    is_scale_up_ = is_scale_up;
+  }
+
+  /// Get is_scale_up, default true
+  bool GetScaleUp() const { return is_scale_up_; }
+
  protected:
   bool Preprocess(FDMat* mat, FDTensor* output,
                   std::map<std::string, std::array<float, 2>>* im_info);
diff --git a/fastdeploy/vision/detection/contrib/yolov5/yolov5_pybind.cc b/fastdeploy/vision/detection/contrib/yolov5/yolov5_pybind.cc
index f44891d984..7b1574401f 100755
--- a/fastdeploy/vision/detection/contrib/yolov5/yolov5_pybind.cc
+++ b/fastdeploy/vision/detection/contrib/yolov5/yolov5_pybind.cc
@@ -35,7 +35,8 @@ void BindYOLOv5(pybind11::module& m) {
         return make_pair(outputs, ims_info);
       })
       .def_property("size", &vision::detection::YOLOv5Preprocessor::GetSize, &vision::detection::YOLOv5Preprocessor::SetSize)
-      .def_property("padding_value", &vision::detection::YOLOv5Preprocessor::GetPaddingValue, &vision::detection::YOLOv5Preprocessor::SetPaddingValue);
+      .def_property("padding_value", &vision::detection::YOLOv5Preprocessor::GetPaddingValue, &vision::detection::YOLOv5Preprocessor::SetPaddingValue)
+      .def_property("is_scale_up", &vision::detection::YOLOv5Preprocessor::GetScaleUp, &vision::detection::YOLOv5Preprocessor::SetScaleUp);
 
   pybind11::class_<vision::detection::YOLOv5Postprocessor>(
       m, "YOLOv5Postprocessor")
diff --git a/fastdeploy/vision/detection/contrib/yolov7.cc b/fastdeploy/vision/detection/contrib/yolov7.cc
deleted file mode 100755
index 9185e16ed0..0000000000
--- a/fastdeploy/vision/detection/contrib/yolov7.cc
+++ /dev/null
@@ -1,344 +0,0 @@
-// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "fastdeploy/vision/detection/contrib/yolov7.h"
-
-#include "fastdeploy/utils/perf.h"
-#include "fastdeploy/vision/utils/utils.h"
-#ifdef ENABLE_CUDA_PREPROCESS
-#include "fastdeploy/vision/utils/cuda_utils.h"
-#endif  // ENABLE_CUDA_PREPROCESS
-
-namespace fastdeploy {
-namespace vision {
-namespace detection {
-
-void YOLOv7::LetterBox(Mat* mat, const std::vector<int>& size,
-                       const std::vector<float>& color, bool _auto,
-                       bool scale_fill, bool scale_up, int stride) {
-  float scale =
-      std::min(size[1] * 1.0 / mat->Height(), size[0] * 1.0 / mat->Width());
-  if (!scale_up) {
-    scale = std::min(scale, 1.0f);
-  }
-
-  int resize_h = int(round(mat->Height() * scale));
-  int resize_w = int(round(mat->Width() * scale));
-
-  int pad_w = size[0] - resize_w;
-  int pad_h = size[1] - resize_h;
-  if (_auto) {
-    pad_h = pad_h % stride;
-    pad_w = pad_w % stride;
-  } else if (scale_fill) {
-    pad_h = 0;
-    pad_w = 0;
-    resize_h = size[1];
-    resize_w = size[0];
-  }
-  if (resize_h != mat->Height() || resize_w != mat->Width()) {
-    Resize::Run(mat, resize_w, resize_h);
-  }
-  if (pad_h > 0 || pad_w > 0) {
-    float half_h = pad_h * 1.0 / 2;
-    int top = int(round(half_h - 0.1));
-    int bottom = int(round(half_h + 0.1));
-    float half_w = pad_w * 1.0 / 2;
-    int left = int(round(half_w - 0.1));
-    int right = int(round(half_w + 0.1));
-    Pad::Run(mat, top, bottom, left, right, color);
-  }
-}
-
-YOLOv7::YOLOv7(const std::string& model_file, const std::string& params_file,
-               const RuntimeOption& custom_option,
-               const ModelFormat& model_format) {
-  if (model_format == ModelFormat::ONNX) {
-    valid_cpu_backends = {Backend::OPENVINO, Backend::ORT};
-    valid_gpu_backends = {Backend::ORT, Backend::TRT};
-  } else {
-    valid_cpu_backends = {Backend::PDINFER, Backend::ORT, Backend::LITE};
-    valid_gpu_backends = {Backend::PDINFER, Backend::ORT, Backend::TRT};
-  }
-  runtime_option = custom_option;
-  runtime_option.model_format = model_format;
-  runtime_option.model_file = model_file;
-  runtime_option.params_file = params_file;
-#ifdef ENABLE_CUDA_PREPROCESS
-  cudaSetDevice(runtime_option.device_id);
-  cudaStream_t stream;
-  CUDA_CHECK(cudaStreamCreate(&stream));
-  cuda_stream_ = reinterpret_cast<void*>(stream);
-  runtime_option.SetExternalStream(cuda_stream_);
-#endif  // ENABLE_CUDA_PREPROCESS
-  initialized = Initialize();
-}
-
-bool YOLOv7::Initialize() {
-  // parameters for preprocess
-  size = {640, 640};
-  padding_value = {114.0, 114.0, 114.0};
-  is_mini_pad = false;
-  is_no_pad = false;
-  is_scale_up = false;
-  stride = 32;
-  max_wh = 7680.0;
-  reused_input_tensors_.resize(1);
-
-  if (!InitRuntime()) {
-    FDERROR << "Failed to initialize fastdeploy backend." << std::endl;
-    return false;
-  }
-  // Check if the input shape is dynamic after Runtime already initialized,
-  // Note that, We need to force is_mini_pad 'false' to keep static
-  // shape after padding (LetterBox) when the is_dynamic_shape is 'false'.
-  is_dynamic_input_ = false;
-  auto shape = InputInfoOfRuntime(0).shape;
-  for (int i = 0; i < shape.size(); ++i) {
-    // if height or width is dynamic
-    if (i >= 2 && shape[i] <= 0) {
-      is_dynamic_input_ = true;
-      break;
-    }
-  }
-  if (!is_dynamic_input_) {
-    is_mini_pad = false;
-  }
-  return true;
-}
-
-YOLOv7::~YOLOv7() {
-#ifdef ENABLE_CUDA_PREPROCESS
-  if (use_cuda_preprocessing_) {
-    CUDA_CHECK(cudaFreeHost(input_img_cuda_buffer_host_));
-    CUDA_CHECK(cudaFree(input_img_cuda_buffer_device_));
-    CUDA_CHECK(cudaFree(input_tensor_cuda_buffer_device_));
-    CUDA_CHECK(cudaStreamDestroy(reinterpret_cast<cudaStream_t>(cuda_stream_)));
-  }
-#endif  // ENABLE_CUDA_PREPROCESS
-}
-
-bool YOLOv7::Preprocess(Mat* mat, FDTensor* output,
-                        std::map<std::string, std::array<float, 2>>* im_info) {
-  // process after image load
-  float ratio = std::min(size[1] * 1.0f / static_cast<float>(mat->Height()),
-                         size[0] * 1.0f / static_cast<float>(mat->Width()));
-  if (std::fabs(ratio - 1.0f) > 1e-06) {
-    int interp = cv::INTER_AREA;
-    if (ratio > 1.0) {
-      interp = cv::INTER_LINEAR;
-    }
-    int resize_h = int(mat->Height() * ratio);
-    int resize_w = int(mat->Width() * ratio);
-    Resize::Run(mat, resize_w, resize_h, -1, -1, interp);
-  }
-  // yolov7's preprocess steps
-  // 1. letterbox
-  // 2. BGR->RGB
-  // 3. HWC->CHW
-  YOLOv7::LetterBox(mat, size, padding_value, is_mini_pad, is_no_pad,
-                    is_scale_up, stride);
-  BGR2RGB::Run(mat);
-  // Normalize::Run(mat, std::vector<float>(mat->Channels(), 0.0),
-  //                std::vector<float>(mat->Channels(), 1.0));
-  // Compute `result = mat * alpha + beta` directly by channel
-  std::vector<float> alpha = {1.0f / 255.0f, 1.0f / 255.0f, 1.0f / 255.0f};
-  std::vector<float> beta = {0.0f, 0.0f, 0.0f};
-  Convert::Run(mat, alpha, beta);
-
-  // Record output shape of preprocessed image
-  (*im_info)["output_shape"] = {static_cast<float>(mat->Height()),
-                                static_cast<float>(mat->Width())};
-
-  HWC2CHW::Run(mat);
-  Cast::Run(mat, "float");
-  mat->ShareWithTensor(output);
-  output->shape.insert(output->shape.begin(), 1);  // reshape to n, h, w, c
-  return true;
-}
-
-void YOLOv7::UseCudaPreprocessing(int max_image_size) {
-#ifdef ENABLE_CUDA_PREPROCESS
-  use_cuda_preprocessing_ = true;
-  is_scale_up = true;
-  if (input_img_cuda_buffer_host_ == nullptr) {
-    // prepare input data cache in GPU pinned memory
-    CUDA_CHECK(cudaMallocHost((void**)&input_img_cuda_buffer_host_,
-                              max_image_size * 3));
-    // prepare input data cache in GPU device memory
-    CUDA_CHECK(
-        cudaMalloc((void**)&input_img_cuda_buffer_device_, max_image_size * 3));
-    CUDA_CHECK(cudaMalloc((void**)&input_tensor_cuda_buffer_device_,
-                          3 * size[0] * size[1] * sizeof(float)));
-  }
-#else
-  FDWARNING << "The FastDeploy didn't compile with BUILD_CUDA_SRC=ON."
-            << std::endl;
-  use_cuda_preprocessing_ = false;
-#endif
-}
-
-bool YOLOv7::CudaPreprocess(
-    Mat* mat, FDTensor* output,
-    std::map<std::string, std::array<float, 2>>* im_info) {
-#ifdef ENABLE_CUDA_PREPROCESS
-  if (is_mini_pad != false || is_no_pad != false || is_scale_up != true) {
-    FDERROR << "Preprocessing with CUDA is only available when the arguments "
-               "satisfy (is_mini_pad=false, is_no_pad=false, is_scale_up=true)."
-            << std::endl;
-    return false;
-  }
-
-  // Record the shape of image and the shape of preprocessed image
-  (*im_info)["input_shape"] = {static_cast<float>(mat->Height()),
-                               static_cast<float>(mat->Width())};
-  (*im_info)["output_shape"] = {static_cast<float>(mat->Height()),
-                                static_cast<float>(mat->Width())};
-
-  cudaStream_t stream = reinterpret_cast<cudaStream_t>(cuda_stream_);
-  int src_img_buf_size = mat->Height() * mat->Width() * mat->Channels();
-  memcpy(input_img_cuda_buffer_host_, mat->Data(), src_img_buf_size);
-  CUDA_CHECK(cudaMemcpyAsync(input_img_cuda_buffer_device_,
-                             input_img_cuda_buffer_host_, src_img_buf_size,
-                             cudaMemcpyHostToDevice, stream));
-  utils::CudaYoloPreprocess(input_img_cuda_buffer_device_, mat->Width(),
-                            mat->Height(), input_tensor_cuda_buffer_device_,
-                            size[0], size[1], padding_value, stream);
-
-  // Record output shape of preprocessed image
-  (*im_info)["output_shape"] = {static_cast<float>(size[0]),
-                                static_cast<float>(size[1])};
-
-  output->SetExternalData({mat->Channels(), size[0], size[1]}, FDDataType::FP32,
-                          input_tensor_cuda_buffer_device_);
-  output->device = Device::GPU;
-  output->shape.insert(output->shape.begin(), 1);  // reshape to n, h, w, c
-  return true;
-#else
-  FDERROR << "CUDA src code was not enabled." << std::endl;
-  return false;
-#endif  // ENABLE_CUDA_PREPROCESS
-}
-
-bool YOLOv7::Postprocess(
-    FDTensor& infer_result, DetectionResult* result,
-    const std::map<std::string, std::array<float, 2>>& im_info,
-    float conf_threshold, float nms_iou_threshold) {
-  FDASSERT(infer_result.shape[0] == 1, "Only support batch =1 now.");
-  result->Clear();
-  result->Reserve(infer_result.shape[1]);
-  if (infer_result.dtype != FDDataType::FP32) {
-    FDERROR << "Only support post process with float32 data." << std::endl;
-    return false;
-  }
-  float* data = static_cast<float*>(infer_result.Data());
-  for (size_t i = 0; i < infer_result.shape[1]; ++i) {
-    int s = i * infer_result.shape[2];
-    float confidence = data[s + 4];
-    float* max_class_score =
-        std::max_element(data + s + 5, data + s + infer_result.shape[2]);
-    confidence *= (*max_class_score);
-    // filter boxes by conf_threshold
-    if (confidence <= conf_threshold) {
-      continue;
-    }
-    int32_t label_id = std::distance(data + s + 5, max_class_score);
-    // convert from [x, y, w, h] to [x1, y1, x2, y2]
-    result->boxes.emplace_back(std::array<float, 4>{
-        data[s] - data[s + 2] / 2.0f + label_id * max_wh,
-        data[s + 1] - data[s + 3] / 2.0f + label_id * max_wh,
-        data[s + 0] + data[s + 2] / 2.0f + label_id * max_wh,
-        data[s + 1] + data[s + 3] / 2.0f + label_id * max_wh});
-    result->label_ids.push_back(label_id);
-    result->scores.push_back(confidence);
-  }
-  utils::NMS(result, nms_iou_threshold);
-
-  // scale the boxes to the origin image shape
-  auto iter_out = im_info.find("output_shape");
-  auto iter_ipt = im_info.find("input_shape");
-  FDASSERT(iter_out != im_info.end() && iter_ipt != im_info.end(),
-           "Cannot find input_shape or output_shape from im_info.");
-  float out_h = iter_out->second[0];
-  float out_w = iter_out->second[1];
-  float ipt_h = iter_ipt->second[0];
-  float ipt_w = iter_ipt->second[1];
-  float scale = std::min(out_h / ipt_h, out_w / ipt_w);
-  float pad_h = (out_h - ipt_h * scale) / 2.0f;
-  float pad_w = (out_w - ipt_w * scale) / 2.0f;
-  if (is_mini_pad) {
-    pad_h = static_cast<float>(static_cast<int>(pad_h) % stride);
-    pad_w = static_cast<float>(static_cast<int>(pad_w) % stride);
-  }
-  for (size_t i = 0; i < result->boxes.size(); ++i) {
-    int32_t label_id = (result->label_ids)[i];
-    // clip box
-    result->boxes[i][0] = result->boxes[i][0] - max_wh * label_id;
-    result->boxes[i][1] = result->boxes[i][1] - max_wh * label_id;
-    result->boxes[i][2] = result->boxes[i][2] - max_wh * label_id;
-    result->boxes[i][3] = result->boxes[i][3] - max_wh * label_id;
-    result->boxes[i][0] = std::max((result->boxes[i][0] - pad_w) / scale, 0.0f);
-    result->boxes[i][1] = std::max((result->boxes[i][1] - pad_h) / scale, 0.0f);
-    result->boxes[i][2] = std::max((result->boxes[i][2] - pad_w) / scale, 0.0f);
-    result->boxes[i][3] = std::max((result->boxes[i][3] - pad_h) / scale, 0.0f);
-    result->boxes[i][0] = std::min(result->boxes[i][0], ipt_w - 1.0f);
-    result->boxes[i][1] = std::min(result->boxes[i][1], ipt_h - 1.0f);
-    result->boxes[i][2] = std::min(result->boxes[i][2], ipt_w - 1.0f);
-    result->boxes[i][3] = std::min(result->boxes[i][3], ipt_h - 1.0f);
-  }
-  return true;
-}
-
-bool YOLOv7::Predict(cv::Mat* im, DetectionResult* result, float conf_threshold,
-                     float nms_iou_threshold) {
-  Mat mat(*im);
-
-  std::map<std::string, std::array<float, 2>> im_info;
-
-  // Record the shape of image and the shape of preprocessed image
-  im_info["input_shape"] = {static_cast<float>(mat.Height()),
-                            static_cast<float>(mat.Width())};
-  im_info["output_shape"] = {static_cast<float>(mat.Height()),
-                             static_cast<float>(mat.Width())};
-
-  if (use_cuda_preprocessing_) {
-    if (!CudaPreprocess(&mat, &reused_input_tensors_[0], &im_info)) {
-      FDERROR << "Failed to preprocess input image." << std::endl;
-      return false;
-    }
-  } else {
-    if (!Preprocess(&mat, &reused_input_tensors_[0], &im_info)) {
-      FDERROR << "Failed to preprocess input image." << std::endl;
-      return false;
-    }
-  }
-
-  reused_input_tensors_[0].name = InputInfoOfRuntime(0).name;
-  if (!Infer()) {
-    FDERROR << "Failed to inference." << std::endl;
-    return false;
-  }
-
-  if (!Postprocess(reused_output_tensors_[0], result, im_info, conf_threshold,
-                   nms_iou_threshold)) {
-    FDERROR << "Failed to post process." << std::endl;
-    return false;
-  }
-
-  return true;
-}
-
-}  // namespace detection
-}  // namespace vision
-}  // namespace fastdeploy
diff --git a/fastdeploy/vision/detection/contrib/yolov7.h b/fastdeploy/vision/detection/contrib/yolov7.h
deleted file mode 100644
index b9d637ed9a..0000000000
--- a/fastdeploy/vision/detection/contrib/yolov7.h
+++ /dev/null
@@ -1,113 +0,0 @@
-// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.  //NOLINT
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#pragma once
-#include "fastdeploy/fastdeploy_model.h"
-#include "fastdeploy/vision/common/processors/transform.h"
-#include "fastdeploy/vision/common/result.h"
-
-namespace fastdeploy {
-namespace vision {
-namespace detection {
-/*! @brief YOLOv7 model object used when to load a YOLOv7 model exported by YOLOv7.
- */
-class FASTDEPLOY_DECL YOLOv7 : public FastDeployModel {
- public:
-  /** \brief  Set path of model file and the configuration of runtime.
-   *
-   * \param[in] model_file Path of model file, e.g ./yolov7.onnx
-   * \param[in] params_file Path of parameter file, e.g ppyoloe/model.pdiparams, if the model format is ONNX, this parameter will be ignored
-   * \param[in] custom_option RuntimeOption for inference, the default will use cpu, and choose the backend defined in "valid_cpu_backends"
-   * \param[in] model_format Model format of the loaded model, default is ONNX format
-   */
-  YOLOv7(const std::string& model_file, const std::string& params_file = "",
-         const RuntimeOption& custom_option = RuntimeOption(),
-         const ModelFormat& model_format = ModelFormat::ONNX);
-
-  ~YOLOv7();
-
-  virtual std::string ModelName() const { return "yolov7"; }
-  /** \brief Predict the detection result for an input image
-   *
-   * \param[in] im The input image data, comes from cv::imread(), is a 3-D array with layout HWC, BGR format
-   * \param[in] result The output detection result will be writen to this structure
-   * \param[in] conf_threshold confidence threashold for postprocessing, default is 0.25
-   * \param[in] nms_iou_threshold iou threashold for NMS, default is 0.5
-   * \return true if the prediction successed, otherwise false
-   */
-  virtual bool Predict(cv::Mat* im, DetectionResult* result,
-                       float conf_threshold = 0.25,
-                       float nms_iou_threshold = 0.5);
-
-
-  void UseCudaPreprocessing(int max_img_size = 3840 * 2160);
-
-  /*! @brief
-  Argument for image preprocessing step, tuple of (width, height), decide the target size after resize, default size = {640, 640}
-  */
-  std::vector<int> size;
-  // padding value, size should be the same as channels
-
-  std::vector<float> padding_value;
-  // only pad to the minimum rectange which height and width is times of stride
-  bool is_mini_pad;
-  // while is_mini_pad = false and is_no_pad = true,
-  // will resize the image to the set size
-  bool is_no_pad;
-  // if is_scale_up is false, the input image only can be zoom out,
-  // the maximum resize scale cannot exceed 1.0
-  bool is_scale_up;
-  // padding stride, for is_mini_pad
-  int stride;
-  // for offseting the boxes by classes when using NMS
-  float max_wh;
-
- private:
-  bool Initialize();
-
-  bool Preprocess(Mat* mat, FDTensor* output,
-                  std::map<std::string, std::array<float, 2>>* im_info);
-
-  bool CudaPreprocess(Mat* mat, FDTensor* output,
-                      std::map<std::string, std::array<float, 2>>* im_info);
-
-  bool Postprocess(FDTensor& infer_result, DetectionResult* result,
-                   const std::map<std::string, std::array<float, 2>>& im_info,
-                   float conf_threshold, float nms_iou_threshold);
-
-  void LetterBox(Mat* mat, const std::vector<int>& size,
-                 const std::vector<float>& color, bool _auto,
-                 bool scale_fill = false, bool scale_up = true,
-                 int stride = 32);
-
-  // whether to inference with dynamic shape (e.g ONNX export with dynamic shape
-  // or not.)
-  // while is_dynamic_shape if 'false', is_mini_pad will force 'false'. This
-  // value will
-  // auto check by fastdeploy after the internal Runtime already initialized.
-  bool is_dynamic_input_;
-  // CUDA host buffer for input image
-  uint8_t* input_img_cuda_buffer_host_ = nullptr;
-  // CUDA device buffer for input image
-  uint8_t* input_img_cuda_buffer_device_ = nullptr;
-  // CUDA device buffer for TRT input tensor
-  float* input_tensor_cuda_buffer_device_ = nullptr;
-  // Whether to use CUDA preprocessing
-  bool use_cuda_preprocessing_ = false;
-  // CUDA stream
-  void* cuda_stream_ = nullptr;
-};
-}  // namespace detection
-}  // namespace vision
-}  // namespace fastdeploy
diff --git a/fastdeploy/vision/detection/contrib/yolov7/postprocessor.cc b/fastdeploy/vision/detection/contrib/yolov7/postprocessor.cc
new file mode 100755
index 0000000000..01d657adb3
--- /dev/null
+++ b/fastdeploy/vision/detection/contrib/yolov7/postprocessor.cc
@@ -0,0 +1,103 @@
+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "fastdeploy/vision/detection/contrib/yolov7/postprocessor.h"
+#include "fastdeploy/vision/utils/utils.h"
+
+namespace fastdeploy {
+namespace vision {
+namespace detection {
+
+YOLOv7Postprocessor::YOLOv7Postprocessor() {
+  conf_threshold_ = 0.25;
+  nms_threshold_ = 0.5;
+  max_wh_ = 7680.0;
+}
+
+bool YOLOv7Postprocessor::Run(const std::vector<FDTensor>& tensors, std::vector<DetectionResult>* results,
+                              const std::vector<std::map<std::string, std::array<float, 2>>>& ims_info) {
+  int batch = tensors[0].shape[0];
+ 
+  results->resize(batch);
+
+  for (size_t bs = 0; bs < batch; ++bs) {
+    (*results)[bs].Clear();
+    (*results)[bs].Reserve(tensors[0].shape[1]);
+    if (tensors[0].dtype != FDDataType::FP32) {
+      FDERROR << "Only support post process with float32 data." << std::endl;
+      return false;
+    }
+    const float* data = reinterpret_cast<const float*>(tensors[0].Data()) + bs * tensors[0].shape[1] * tensors[0].shape[2];
+    for (size_t i = 0; i < tensors[0].shape[1]; ++i) {
+      int s = i * tensors[0].shape[2];
+      float confidence = data[s + 4];
+      const float* max_class_score =
+          std::max_element(data + s + 5, data + s + tensors[0].shape[2]);
+      confidence *= (*max_class_score);
+      // filter boxes by conf_threshold
+      if (confidence <= conf_threshold_) {
+        continue;
+      }
+      int32_t label_id = std::distance(data + s + 5, max_class_score);
+      // convert from [x, y, w, h] to [x1, y1, x2, y2]
+      (*results)[bs].boxes.emplace_back(std::array<float, 4>{
+          data[s] - data[s + 2] / 2.0f + label_id * max_wh_,
+          data[s + 1] - data[s + 3] / 2.0f + label_id * max_wh_,
+          data[s + 0] + data[s + 2] / 2.0f + label_id * max_wh_,
+          data[s + 1] + data[s + 3] / 2.0f + label_id * max_wh_});
+      (*results)[bs].label_ids.push_back(label_id);
+      (*results)[bs].scores.push_back(confidence);
+    }
+
+    if ((*results)[bs].boxes.size() == 0) {
+      return true;
+    }
+
+    utils::NMS(&((*results)[bs]), nms_threshold_);
+
+    // scale the boxes to the origin image shape
+    auto iter_out = ims_info[bs].find("output_shape");
+    auto iter_ipt = ims_info[bs].find("input_shape");
+    FDASSERT(iter_out != ims_info[bs].end() && iter_ipt != ims_info[bs].end(),
+            "Cannot find input_shape or output_shape from im_info.");
+    float out_h = iter_out->second[0];
+    float out_w = iter_out->second[1];
+    float ipt_h = iter_ipt->second[0];
+    float ipt_w = iter_ipt->second[1];
+    float scale = std::min(out_h / ipt_h, out_w / ipt_w);
+    float pad_h = (out_h - ipt_h * scale) / 2;
+    float pad_w = (out_w - ipt_w * scale) / 2;
+    for (size_t i = 0; i < (*results)[bs].boxes.size(); ++i) {
+      int32_t label_id = ((*results)[bs].label_ids)[i];
+      // clip box
+      (*results)[bs].boxes[i][0] = (*results)[bs].boxes[i][0] - max_wh_ * label_id;
+      (*results)[bs].boxes[i][1] = (*results)[bs].boxes[i][1] - max_wh_ * label_id;
+      (*results)[bs].boxes[i][2] = (*results)[bs].boxes[i][2] - max_wh_ * label_id;
+      (*results)[bs].boxes[i][3] = (*results)[bs].boxes[i][3] - max_wh_ * label_id;
+      (*results)[bs].boxes[i][0] = std::max(((*results)[bs].boxes[i][0] - pad_w) / scale, 0.0f);
+      (*results)[bs].boxes[i][1] = std::max(((*results)[bs].boxes[i][1] - pad_h) / scale, 0.0f);
+      (*results)[bs].boxes[i][2] = std::max(((*results)[bs].boxes[i][2] - pad_w) / scale, 0.0f);
+      (*results)[bs].boxes[i][3] = std::max(((*results)[bs].boxes[i][3] - pad_h) / scale, 0.0f);
+      (*results)[bs].boxes[i][0] = std::min((*results)[bs].boxes[i][0], ipt_w - 1.0f);
+      (*results)[bs].boxes[i][1] = std::min((*results)[bs].boxes[i][1], ipt_h - 1.0f);
+      (*results)[bs].boxes[i][2] = std::min((*results)[bs].boxes[i][2], ipt_w - 1.0f);
+      (*results)[bs].boxes[i][3] = std::min((*results)[bs].boxes[i][3], ipt_h - 1.0f);
+    }
+  }
+  return true;
+}
+
+}  // namespace detection
+}  // namespace vision
+}  // namespace fastdeploy
diff --git a/fastdeploy/vision/detection/contrib/yolov7/postprocessor.h b/fastdeploy/vision/detection/contrib/yolov7/postprocessor.h
new file mode 100755
index 0000000000..5ece87eb8b
--- /dev/null
+++ b/fastdeploy/vision/detection/contrib/yolov7/postprocessor.h
@@ -0,0 +1,66 @@
+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+#include "fastdeploy/vision/common/processors/transform.h"
+#include "fastdeploy/vision/common/result.h"
+
+namespace fastdeploy {
+namespace vision {
+
+namespace detection {
+/*! @brief Postprocessor object for YOLOv7 serials model.
+ */
+class FASTDEPLOY_DECL YOLOv7Postprocessor {
+ public:
+  /** \brief Create a postprocessor instance for YOLOv7 serials model
+   */
+  YOLOv7Postprocessor();
+
+  /** \brief Process the result of runtime and fill to DetectionResult structure
+   *
+   * \param[in] tensors The inference result from runtime
+   * \param[in] result The output result of detection
+   * \param[in] ims_info The shape info list, record input_shape and output_shape
+   * \return true if the postprocess successed, otherwise false
+   */
+  bool Run(const std::vector<FDTensor>& tensors,
+      std::vector<DetectionResult>* results,
+      const std::vector<std::map<std::string, std::array<float, 2>>>& ims_info);
+
+  /// Set conf_threshold, default 0.25
+  void SetConfThreshold(const float& conf_threshold) {
+    conf_threshold_ = conf_threshold;
+  }
+
+  /// Get conf_threshold, default 0.25
+  float GetConfThreshold() const { return conf_threshold_; }
+
+  /// Set nms_threshold, default 0.5
+  void SetNMSThreshold(const float& nms_threshold) {
+    nms_threshold_ = nms_threshold;
+  }
+
+  /// Get nms_threshold, default 0.5
+  float GetNMSThreshold() const { return nms_threshold_; }
+
+ protected:
+  float conf_threshold_;
+  float nms_threshold_;
+  float max_wh_;
+};
+
+}  // namespace detection
+}  // namespace vision
+}  // namespace fastdeploy
diff --git a/fastdeploy/vision/detection/contrib/yolov7/preprocessor.cc b/fastdeploy/vision/detection/contrib/yolov7/preprocessor.cc
new file mode 100755
index 0000000000..91e22f32b4
--- /dev/null
+++ b/fastdeploy/vision/detection/contrib/yolov7/preprocessor.cc
@@ -0,0 +1,116 @@
+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "fastdeploy/vision/detection/contrib/yolov7/preprocessor.h"
+#include "fastdeploy/function/concat.h"
+
+namespace fastdeploy {
+namespace vision {
+namespace detection {
+
+YOLOv7Preprocessor::YOLOv7Preprocessor() {
+  size_ = {640, 640};
+  padding_value_ = {114.0, 114.0, 114.0};
+  is_mini_pad_ = false;
+  is_no_pad_ = false;
+  is_scale_up_ = true;
+  stride_ = 32;
+  max_wh_ = 7680.0;
+}
+
+void YOLOv7Preprocessor::LetterBox(FDMat* mat) {
+  float scale =
+      std::min(size_[1] * 1.0 / mat->Height(), size_[0] * 1.0 / mat->Width());
+  if (!is_scale_up_) {
+    scale = std::min(scale, 1.0f);
+  }
+
+  int resize_h = int(round(mat->Height() * scale));
+  int resize_w = int(round(mat->Width() * scale));
+
+  int pad_w = size_[0] - resize_w;
+  int pad_h = size_[1] - resize_h;
+  if (is_mini_pad_) {
+    pad_h = pad_h % stride_;
+    pad_w = pad_w % stride_;
+  } else if (is_no_pad_) {
+    pad_h = 0;
+    pad_w = 0;
+    resize_h = size_[1];
+    resize_w = size_[0];
+  }
+  if (std::fabs(scale - 1.0f) > 1e-06) {
+    Resize::Run(mat, resize_w, resize_h);
+  }
+  if (pad_h > 0 || pad_w > 0) {
+    float half_h = pad_h * 1.0 / 2;
+    int top = int(round(half_h - 0.1));
+    int bottom = int(round(half_h + 0.1));
+    float half_w = pad_w * 1.0 / 2;
+    int left = int(round(half_w - 0.1));
+    int right = int(round(half_w + 0.1));
+    Pad::Run(mat, top, bottom, left, right, padding_value_);
+  }
+}
+
+bool YOLOv7Preprocessor::Preprocess(FDMat* mat, FDTensor* output,
+            std::map<std::string, std::array<float, 2>>* im_info) {
+  // Record the shape of image and the shape of preprocessed image
+  (*im_info)["input_shape"] = {static_cast<float>(mat->Height()),
+                               static_cast<float>(mat->Width())};
+  // yolov7's preprocess steps
+  // 1. letterbox
+  // 2. convert_and_permute(swap_rb=true)
+  LetterBox(mat);
+  std::vector<float> alpha = {1.0f / 255.0f, 1.0f / 255.0f, 1.0f / 255.0f};
+  std::vector<float> beta = {0.0f, 0.0f, 0.0f};
+  ConvertAndPermute::Run(mat, alpha, beta, true);
+
+  // Record output shape of preprocessed image
+  (*im_info)["output_shape"] = {static_cast<float>(mat->Height()),
+                                static_cast<float>(mat->Width())};
+
+  mat->ShareWithTensor(output);
+  output->ExpandDim(0);  // reshape to n, h, w, c
+  return true;
+}
+
+bool YOLOv7Preprocessor::Run(std::vector<FDMat>* images, std::vector<FDTensor>* outputs,
+                             std::vector<std::map<std::string, std::array<float, 2>>>* ims_info) {
+  if (images->size() == 0) {
+    FDERROR << "The size of input images should be greater than 0." << std::endl;
+    return false;
+  }
+  ims_info->resize(images->size());
+  outputs->resize(1);
+  // Concat all the preprocessed data to a batch tensor
+  std::vector<FDTensor> tensors(images->size()); 
+  for (size_t i = 0; i < images->size(); ++i) {
+    if (!Preprocess(&(*images)[i], &tensors[i], &(*ims_info)[i])) {
+      FDERROR << "Failed to preprocess input image." << std::endl;
+      return false;
+    }
+  }
+
+  if (tensors.size() == 1) {
+    (*outputs)[0] = std::move(tensors[0]);
+  } else {
+    function::Concat(tensors, &((*outputs)[0]), 0);
+  }
+  return true;
+}
+
+}  // namespace detection
+}  // namespace vision
+}  // namespace fastdeploy
diff --git a/fastdeploy/vision/detection/contrib/yolov7/preprocessor.h b/fastdeploy/vision/detection/contrib/yolov7/preprocessor.h
new file mode 100755
index 0000000000..ff6c6cad55
--- /dev/null
+++ b/fastdeploy/vision/detection/contrib/yolov7/preprocessor.h
@@ -0,0 +1,96 @@
+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+#include "fastdeploy/vision/common/processors/transform.h"
+#include "fastdeploy/vision/common/result.h"
+
+namespace fastdeploy {
+namespace vision {
+
+namespace detection {
+/*! @brief Preprocessor object for YOLOv7 serials model.
+ */
+class FASTDEPLOY_DECL YOLOv7Preprocessor {
+ public:
+  /** \brief Create a preprocessor instance for YOLOv7 serials model
+   */
+  YOLOv7Preprocessor();
+
+  /** \brief Process the input image and prepare input tensors for runtime
+   *
+   * \param[in] images The input image data list, all the elements are returned by cv::imread()
+   * \param[in] outputs The output tensors which will feed in runtime
+   * \param[in] ims_info The shape info list, record input_shape and output_shape
+   * \return true if the preprocess successed, otherwise false
+   */
+  bool Run(std::vector<FDMat>* images, std::vector<FDTensor>* outputs,
+           std::vector<std::map<std::string, std::array<float, 2>>>* ims_info);
+
+  /// Set target size, tuple of (width, height), default size = {640, 640}
+  void SetSize(const std::vector<int>& size) { size_ = size; }
+
+  /// Get target size, tuple of (width, height), default size = {640, 640}
+  std::vector<int> GetSize() const { return size_; }
+
+  /// Set padding value, size should be the same as channels
+  void SetPaddingValue(const std::vector<float>& padding_value) {
+    padding_value_ = padding_value;
+  }
+
+  /// Get padding value, size should be the same as channels
+  std::vector<float> GetPaddingValue() const { return padding_value_; }
+
+  /// Set is_scale_up, if is_scale_up is false, the input image only
+  /// can be zoom out, the maximum resize scale cannot exceed 1.0, default true
+  void SetScaleUp(bool is_scale_up) {
+    is_scale_up_ = is_scale_up;
+  }
+
+  /// Get is_scale_up, default true
+  bool GetScaleUp() const { return is_scale_up_; }
+
+ protected:
+  bool Preprocess(FDMat* mat, FDTensor* output,
+                  std::map<std::string, std::array<float, 2>>* im_info);
+
+  void LetterBox(FDMat* mat);
+
+  // target size, tuple of (width, height), default size = {640, 640}
+  std::vector<int> size_;
+
+  // padding value, size should be the same as channels
+  std::vector<float> padding_value_;
+
+  // only pad to the minimum rectange which height and width is times of stride
+  bool is_mini_pad_;
+
+  // while is_mini_pad = false and is_no_pad = true,
+  // will resize the image to the set size
+  bool is_no_pad_;
+
+  // if is_scale_up is false, the input image only can be zoom out,
+  // the maximum resize scale cannot exceed 1.0
+  bool is_scale_up_;
+
+  // padding stride, for is_mini_pad
+  int stride_;
+
+  // for offseting the boxes by classes when using NMS
+  float max_wh_;
+};
+
+}  // namespace detection
+}  // namespace vision
+}  // namespace fastdeploy
diff --git a/fastdeploy/vision/detection/contrib/yolov7/yolov7.cc b/fastdeploy/vision/detection/contrib/yolov7/yolov7.cc
new file mode 100755
index 0000000000..513351a095
--- /dev/null
+++ b/fastdeploy/vision/detection/contrib/yolov7/yolov7.cc
@@ -0,0 +1,89 @@
+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "fastdeploy/vision/detection/contrib/yolov7/yolov7.h"
+
+namespace fastdeploy {
+namespace vision {
+namespace detection {
+
+YOLOv7::YOLOv7(const std::string& model_file, const std::string& params_file,
+               const RuntimeOption& custom_option,
+               const ModelFormat& model_format) {
+  if (model_format == ModelFormat::ONNX) {
+    valid_cpu_backends = {Backend::OPENVINO, Backend::ORT};
+    valid_gpu_backends = {Backend::ORT, Backend::TRT};
+  } else {
+    valid_cpu_backends = {Backend::PDINFER, Backend::ORT, Backend::LITE};
+    valid_gpu_backends = {Backend::PDINFER, Backend::ORT, Backend::TRT};
+  }
+  runtime_option = custom_option;
+  runtime_option.model_format = model_format;
+  runtime_option.model_file = model_file;
+  runtime_option.params_file = params_file;
+  initialized = Initialize();
+}
+
+bool YOLOv7::Initialize() {
+  if (!InitRuntime()) {
+    FDERROR << "Failed to initialize fastdeploy backend." << std::endl;
+    return false;
+  }
+  return true;
+}
+
+bool YOLOv7::Predict(cv::Mat* im, DetectionResult* result, float conf_threshold, float nms_threshold) {
+  postprocessor_.SetConfThreshold(conf_threshold);
+  postprocessor_.SetNMSThreshold(nms_threshold);
+  if (!Predict(*im, result)) {
+    return false;
+  }
+  return true;
+}
+
+bool YOLOv7::Predict(const cv::Mat& im, DetectionResult* result) {
+  std::vector<DetectionResult> results;
+  if (!BatchPredict({im}, &results)) {
+    return false;
+  }
+  *result = std::move(results[0]);
+  return true;
+}
+
+bool YOLOv7::BatchPredict(const std::vector<cv::Mat>& images, std::vector<DetectionResult>* results) {
+  std::vector<std::map<std::string, std::array<float, 2>>> ims_info;
+  std::vector<FDMat> fd_images = WrapMat(images);
+
+  if (!preprocessor_.Run(&fd_images, &reused_input_tensors_, &ims_info)) {
+    FDERROR << "Failed to preprocess the input image." << std::endl;
+    return false;
+  }
+
+  reused_input_tensors_[0].name = InputInfoOfRuntime(0).name;
+  if (!Infer(reused_input_tensors_, &reused_output_tensors_)) {
+    FDERROR << "Failed to inference by runtime." << std::endl;
+    return false;
+  }
+
+  if (!postprocessor_.Run(reused_output_tensors_, results, ims_info)) {
+    FDERROR << "Failed to postprocess the inference results by runtime." << std::endl;
+    return false;
+  }
+
+  return true;
+}
+
+}  // namespace detection
+}  // namespace vision
+}  // namespace fastdeploy
diff --git a/fastdeploy/vision/detection/contrib/yolov7/yolov7.h b/fastdeploy/vision/detection/contrib/yolov7/yolov7.h
new file mode 100755
index 0000000000..2c36fd0c80
--- /dev/null
+++ b/fastdeploy/vision/detection/contrib/yolov7/yolov7.h
@@ -0,0 +1,88 @@
+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.  //NOLINT
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+#include "fastdeploy/fastdeploy_model.h"
+#include "fastdeploy/vision/detection/contrib/yolov7/preprocessor.h"
+#include "fastdeploy/vision/detection/contrib/yolov7/postprocessor.h"
+
+namespace fastdeploy {
+namespace vision {
+namespace detection {
+/*! @brief YOLOv7 model object used when to load a YOLOv7 model exported by YOLOv7.
+ */
+class FASTDEPLOY_DECL YOLOv7 : public FastDeployModel {
+ public:
+  /** \brief  Set path of model file and the configuration of runtime.
+   *
+   * \param[in] model_file Path of model file, e.g ./yolov7.onnx
+   * \param[in] params_file Path of parameter file, e.g ppyoloe/model.pdiparams, if the model format is ONNX, this parameter will be ignored
+   * \param[in] custom_option RuntimeOption for inference, the default will use cpu, and choose the backend defined in "valid_cpu_backends"
+   * \param[in] model_format Model format of the loaded model, default is ONNX format
+   */
+  YOLOv7(const std::string& model_file, const std::string& params_file = "",
+         const RuntimeOption& custom_option = RuntimeOption(),
+         const ModelFormat& model_format = ModelFormat::ONNX);
+
+  std::string ModelName() const { return "yolov7"; }
+
+  /** \brief DEPRECATED Predict the detection result for an input image, remove at 1.0 version
+   *
+   * \param[in] im The input image data, comes from cv::imread(), is a 3-D array with layout HWC, BGR format
+   * \param[in] result The output detection result will be writen to this structure
+   * \param[in] conf_threshold confidence threashold for postprocessing, default is 0.25
+   * \param[in] nms_threshold iou threashold for NMS, default is 0.5
+   * \return true if the prediction successed, otherwise false
+   */
+  virtual bool Predict(cv::Mat* im, DetectionResult* result,
+                       float conf_threshold = 0.25,
+                       float nms_threshold = 0.5);
+
+  /** \brief Predict the detection result for an input image
+   *
+   * \param[in] img The input image data, comes from cv::imread(), is a 3-D array with layout HWC, BGR format
+   * \param[in] result The output detection result will be writen to this structure
+   * \return true if the prediction successed, otherwise false
+   */
+  virtual bool Predict(const cv::Mat& img, DetectionResult* result);
+
+  /** \brief Predict the detection results for a batch of input images
+   *
+   * \param[in] imgs, The input image list, each element comes from cv::imread()
+   * \param[in] results The output detection result list
+   * \return true if the prediction successed, otherwise false
+   */
+  virtual bool BatchPredict(const std::vector<cv::Mat>& imgs,
+                            std::vector<DetectionResult>* results);
+
+  /// Get preprocessor reference of YOLOv7
+  virtual YOLOv7Preprocessor& GetPreprocessor() {
+    return preprocessor_;
+  }
+
+  /// Get postprocessor reference of YOLOv7
+  virtual YOLOv7Postprocessor& GetPostprocessor() {
+    return postprocessor_;
+  }
+
+ protected:
+  bool Initialize();
+  YOLOv7Preprocessor preprocessor_;
+  YOLOv7Postprocessor postprocessor_;
+};
+
+}  // namespace detection
+}  // namespace vision
+}  // namespace fastdeploy
diff --git a/fastdeploy/vision/detection/contrib/yolov7/yolov7_pybind.cc b/fastdeploy/vision/detection/contrib/yolov7/yolov7_pybind.cc
new file mode 100755
index 0000000000..6899faa916
--- /dev/null
+++ b/fastdeploy/vision/detection/contrib/yolov7/yolov7_pybind.cc
@@ -0,0 +1,87 @@
+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "fastdeploy/pybind/main.h"
+
+namespace fastdeploy {
+void BindYOLOv7(pybind11::module& m) {
+  pybind11::class_<vision::detection::YOLOv7Preprocessor>(
+      m, "YOLOv7Preprocessor")
+      .def(pybind11::init<>())
+      .def("run", [](vision::detection::YOLOv7Preprocessor& self, std::vector<pybind11::array>& im_list) {
+        std::vector<vision::FDMat> images;
+        for (size_t i = 0; i < im_list.size(); ++i) {
+          images.push_back(vision::WrapMat(PyArrayToCvMat(im_list[i])));
+        }
+        std::vector<FDTensor> outputs;
+        std::vector<std::map<std::string, std::array<float, 2>>> ims_info;
+        if (!self.Run(&images, &outputs, &ims_info)) {
+          pybind11::eval("raise Exception('Failed to preprocess the input data in PaddleClasPreprocessor.')");
+        }
+        for (size_t i = 0; i < outputs.size(); ++i) {
+          outputs[i].StopSharing();
+        }
+        return make_pair(outputs, ims_info);
+      })
+      .def_property("size", &vision::detection::YOLOv7Preprocessor::GetSize, &vision::detection::YOLOv7Preprocessor::SetSize)
+      .def_property("padding_value", &vision::detection::YOLOv7Preprocessor::GetPaddingValue, &vision::detection::YOLOv7Preprocessor::SetPaddingValue)
+      .def_property("is_scale_up", &vision::detection::YOLOv7Preprocessor::GetScaleUp, &vision::detection::YOLOv7Preprocessor::SetScaleUp);
+
+  pybind11::class_<vision::detection::YOLOv7Postprocessor>(
+      m, "YOLOv7Postprocessor")
+      .def(pybind11::init<>())
+      .def("run", [](vision::detection::YOLOv7Postprocessor& self, std::vector<FDTensor>& inputs,
+                     const std::vector<std::map<std::string, std::array<float, 2>>>& ims_info) {
+        std::vector<vision::DetectionResult> results;
+        if (!self.Run(inputs, &results, ims_info)) {
+          pybind11::eval("raise Exception('Failed to postprocess the runtime result in YOLOv7Postprocessor.')");
+        }
+        return results;
+      })
+      .def("run", [](vision::detection::YOLOv7Postprocessor& self, std::vector<pybind11::array>& input_array,
+                     const std::vector<std::map<std::string, std::array<float, 2>>>& ims_info) {
+        std::vector<vision::DetectionResult> results;
+        std::vector<FDTensor> inputs;
+        PyArrayToTensorList(input_array, &inputs, /*share_buffer=*/true);
+        if (!self.Run(inputs, &results, ims_info)) {
+          pybind11::eval("raise Exception('Failed to postprocess the runtime result in YOLOv7Postprocessor.')");
+        }
+        return results;
+      })
+      .def_property("conf_threshold", &vision::detection::YOLOv7Postprocessor::GetConfThreshold, &vision::detection::YOLOv7Postprocessor::SetConfThreshold)
+      .def_property("nms_threshold", &vision::detection::YOLOv7Postprocessor::GetNMSThreshold, &vision::detection::YOLOv7Postprocessor::SetNMSThreshold);
+
+  pybind11::class_<vision::detection::YOLOv7, FastDeployModel>(m, "YOLOv7")
+      .def(pybind11::init<std::string, std::string, RuntimeOption,
+                          ModelFormat>())
+      .def("predict",
+           [](vision::detection::YOLOv7& self, pybind11::array& data) {
+             auto mat = PyArrayToCvMat(data);
+             vision::DetectionResult res;
+             self.Predict(mat, &res);
+             return res;
+           })
+      .def("batch_predict", [](vision::detection::YOLOv7& self, std::vector<pybind11::array>& data) {
+        std::vector<cv::Mat> images;
+        for (size_t i = 0; i < data.size(); ++i) {
+          images.push_back(PyArrayToCvMat(data[i]));
+        }
+        std::vector<vision::DetectionResult> results;
+        self.BatchPredict(images, &results);
+        return results;
+      })
+      .def_property_readonly("preprocessor", &vision::detection::YOLOv7::GetPreprocessor)
+      .def_property_readonly("postprocessor", &vision::detection::YOLOv7::GetPostprocessor);
+}
+}  // namespace fastdeploy
diff --git a/fastdeploy/vision/detection/contrib/yolov7_pybind.cc b/fastdeploy/vision/detection/contrib/yolov7_pybind.cc
deleted file mode 100644
index d7ab993401..0000000000
--- a/fastdeploy/vision/detection/contrib/yolov7_pybind.cc
+++ /dev/null
@@ -1,42 +0,0 @@
-// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "fastdeploy/pybind/main.h"
-
-namespace fastdeploy {
-void BindYOLOv7(pybind11::module& m) {
-  pybind11::class_<vision::detection::YOLOv7, FastDeployModel>(m, "YOLOv7")
-      .def(pybind11::init<std::string, std::string, RuntimeOption,
-                          ModelFormat>())
-      .def("predict",
-           [](vision::detection::YOLOv7& self, pybind11::array& data,
-              float conf_threshold, float nms_iou_threshold) {
-             auto mat = PyArrayToCvMat(data);
-             vision::DetectionResult res;
-             self.Predict(&mat, &res, conf_threshold, nms_iou_threshold);
-             return res;
-           })
-      .def("use_cuda_preprocessing",
-           [](vision::detection::YOLOv7& self, int max_image_size) {
-             self.UseCudaPreprocessing(max_image_size);
-           })
-      .def_readwrite("size", &vision::detection::YOLOv7::size)
-      .def_readwrite("padding_value", &vision::detection::YOLOv7::padding_value)
-      .def_readwrite("is_mini_pad", &vision::detection::YOLOv7::is_mini_pad)
-      .def_readwrite("is_no_pad", &vision::detection::YOLOv7::is_no_pad)
-      .def_readwrite("is_scale_up", &vision::detection::YOLOv7::is_scale_up)
-      .def_readwrite("stride", &vision::detection::YOLOv7::stride)
-      .def_readwrite("max_wh", &vision::detection::YOLOv7::max_wh);
-}
-}  // namespace fastdeploy
diff --git a/python/fastdeploy/vision/detection/__init__.py b/python/fastdeploy/vision/detection/__init__.py
index 6de4a3fa63..b5f01f3a77 100755
--- a/python/fastdeploy/vision/detection/__init__.py
+++ b/python/fastdeploy/vision/detection/__init__.py
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 from __future__ import absolute_import
-from .contrib.yolov7 import YOLOv7
+from .contrib.yolov7 import *
 from .contrib.yolor import YOLOR
 from .contrib.scaled_yolov4 import ScaledYOLOv4
 from .contrib.nanodet_plus import NanoDetPlus
diff --git a/python/fastdeploy/vision/detection/contrib/yolov5.py b/python/fastdeploy/vision/detection/contrib/yolov5.py
index 42eccb88d4..b8113f3b83 100644
--- a/python/fastdeploy/vision/detection/contrib/yolov5.py
+++ b/python/fastdeploy/vision/detection/contrib/yolov5.py
@@ -41,9 +41,19 @@ def size(self):
 
     @property
     def padding_value(self):
+        """
+        padding value for preprocessing, default [114.0, 114.0, 114.0]
+        """
         #  padding value, size should be the same as channels
         return self._preprocessor.padding_value
 
+    @property
+    def is_scale_up(self):
+        """
+        is_scale_up for preprocessing, the input image only can be zoom out, the maximum resize scale cannot exceed 1.0, default true
+        """
+        return self._preprocessor.is_scale_up
+
     @size.setter
     def size(self, wh):
         assert isinstance(wh, (list, tuple)),\
@@ -60,6 +70,13 @@ def padding_value(self, value):
             list), "The value to set `padding_value` must be type of list."
         self._preprocessor.padding_value = value
 
+    @is_scale_up.setter
+    def is_scale_up(self, value):
+        assert isinstance(
+            value,
+            bool), "The value to set `is_scale_up` must be type of bool."
+        self._preprocessor.is_scale_up = value
+
 
 class YOLOv5Postprocessor:
     def __init__(self):
@@ -93,7 +110,7 @@ def nms_threshold(self):
     @property
     def multi_label(self):
         """
-        multi_label for postprocessing, default is true
+        multi_label for postprocessing, set true for eval, default is True
         """
         return self._postprocessor.multi_label
 
diff --git a/python/fastdeploy/vision/detection/contrib/yolov7.py b/python/fastdeploy/vision/detection/contrib/yolov7.py
index 0334504851..510b72ed65 100644
--- a/python/fastdeploy/vision/detection/contrib/yolov7.py
+++ b/python/fastdeploy/vision/detection/contrib/yolov7.py
@@ -18,77 +18,41 @@
 from .... import c_lib_wrap as C
 
 
-class YOLOv7(FastDeployModel):
-    def __init__(self,
-                 model_file,
-                 params_file="",
-                 runtime_option=None,
-                 model_format=ModelFormat.ONNX):
-        """Load a YOLOv7 model exported by YOLOv7.
-
-        :param model_file: (str)Path of model file, e.g ./yolov7.onnx
-        :param params_file: (str)Path of parameters file, e.g yolox/model.pdiparams, if the model_fomat is ModelFormat.ONNX, this param will be ignored, can be set as empty string
-        :param runtime_option: (fastdeploy.RuntimeOption)RuntimeOption for inference this model, if it's None, will use the default backend on CPU
-        :param model_format: (fastdeploy.ModelForamt)Model format of the loaded model
+class YOLOv7Preprocessor:
+    def __init__(self):
+        """Create a preprocessor for YOLOv7
         """
-        # 调用基函数进行backend_option的初始化
-        # 初始化后的option保存在self._runtime_option
-        super(YOLOv7, self).__init__(runtime_option)
-
-        self._model = C.vision.detection.YOLOv7(
-            model_file, params_file, self._runtime_option, model_format)
-        # 通过self.initialized判断整个模型的初始化是否成功
-        assert self.initialized, "YOLOv7 initialize failed."
+        self._preprocessor = C.vision.detection.YOLOv7Preprocessor()
 
-    def predict(self, input_image, conf_threshold=0.25, nms_iou_threshold=0.5):
-        """Detect an input image
+    def run(self, input_ims):
+        """Preprocess input images for YOLOv7
 
-        :param input_image: (numpy.ndarray)The input image data, 3-D array with layout HWC, BGR format
-        :param conf_threshold: confidence threashold for postprocessing, default is 0.25
-        :param nms_iou_threshold: iou threashold for NMS, default is 0.5
-        :return: DetectionResult
+        :param: input_ims: (list of numpy.ndarray)The input image
+        :return: list of FDTensor
         """
-        return self._model.predict(input_image, conf_threshold,
-                                   nms_iou_threshold)
+        return self._preprocessor.run(input_ims)
 
-    # 一些跟YOLOv7模型有关的属性封装
-    # 多数是预处理相关，可通过修改如model.size = [1280, 1280]改变预处理时resize的大小（前提是模型支持）
     @property
     def size(self):
         """
         Argument for image preprocessing step, the preprocess image size, tuple of (width, height), default size = [640, 640]
         """
-        return self._model.size
+        return self._preprocessor.size
 
     @property
     def padding_value(self):
+        """
+        padding value for preprocessing, default [114.0, 114.0, 114.0]
+        """
         #  padding value, size should be the same as channels
-        return self._model.padding_value
-
-    @property
-    def is_no_pad(self):
-        # while is_mini_pad = false and is_no_pad = true, will resize the image to the set size
-        return self._model.is_no_pad
-
-    @property
-    def is_mini_pad(self):
-        # only pad to the minimum rectange which height and width is times of stride
-        return self._model.is_mini_pad
+        return self._preprocessor.padding_value
 
     @property
     def is_scale_up(self):
-        # if is_scale_up is false, the input image only can be zoom out, the maximum resize scale cannot exceed 1.0
-        return self._model.is_scale_up
-
-    @property
-    def stride(self):
-        # padding stride, for is_mini_pad
-        return self._model.stride
-
-    @property
-    def max_wh(self):
-        # for offseting the boxes by classes when using NMS
-        return self._model.max_wh
+        """
+        is_scale_up for preprocessing, the input image only can be zoom out, the maximum resize scale cannot exceed 1.0, default true
+        """
+        return self._preprocessor.is_scale_up
 
     @size.setter
     def size(self, wh):
@@ -97,43 +61,122 @@ def size(self, wh):
         assert len(wh) == 2,\
             "The value to set `size` must contatins 2 elements means [width, height], but now it contains {} elements.".format(
             len(wh))
-        self._model.size = wh
+        self._preprocessor.size = wh
 
     @padding_value.setter
     def padding_value(self, value):
         assert isinstance(
             value,
             list), "The value to set `padding_value` must be type of list."
-        self._model.padding_value = value
-
-    @is_no_pad.setter
-    def is_no_pad(self, value):
-        assert isinstance(
-            value, bool), "The value to set `is_no_pad` must be type of bool."
-        self._model.is_no_pad = value
-
-    @is_mini_pad.setter
-    def is_mini_pad(self, value):
-        assert isinstance(
-            value,
-            bool), "The value to set `is_mini_pad` must be type of bool."
-        self._model.is_mini_pad = value
+        self._preprocessor.padding_value = value
 
     @is_scale_up.setter
     def is_scale_up(self, value):
         assert isinstance(
             value,
             bool), "The value to set `is_scale_up` must be type of bool."
-        self._model.is_scale_up = value
+        self._preprocessor.is_scale_up = value
 
-    @stride.setter
-    def stride(self, value):
-        assert isinstance(
-            value, int), "The value to set `stride` must be type of int."
-        self._model.stride = value
 
-    @max_wh.setter
-    def max_wh(self, value):
-        assert isinstance(
-            value, float), "The value to set `max_wh` must be type of float."
-        self._model.max_wh = value
+class YOLOv7Postprocessor:
+    def __init__(self):
+        """Create a postprocessor for YOLOv7
+        """
+        self._postprocessor = C.vision.detection.YOLOv7Postprocessor()
+
+    def run(self, runtime_results, ims_info):
+        """Postprocess the runtime results for YOLOv7
+
+        :param: runtime_results: (list of FDTensor)The output FDTensor results from runtime
+        :param: ims_info: (list of dict)Record input_shape and output_shape
+        :return: list of DetectionResult(If the runtime_results is predict by batched samples, the length of this list equals to the batch size)
+        """
+        return self._postprocessor.run(runtime_results, ims_info)
+
+    @property
+    def conf_threshold(self):
+        """
+        confidence threshold for postprocessing, default is 0.25
+        """
+        return self._postprocessor.conf_threshold
+
+    @property
+    def nms_threshold(self):
+        """
+        nms threshold for postprocessing, default is 0.5
+        """
+        return self._postprocessor.nms_threshold
+
+    @conf_threshold.setter
+    def conf_threshold(self, conf_threshold):
+        assert isinstance(conf_threshold, float),\
+            "The value to set `conf_threshold` must be type of float."
+        self._postprocessor.conf_threshold = conf_threshold
+
+    @nms_threshold.setter
+    def nms_threshold(self, nms_threshold):
+        assert isinstance(nms_threshold, float),\
+            "The value to set `nms_threshold` must be type of float."
+        self._postprocessor.nms_threshold = nms_threshold
+
+
+class YOLOv7(FastDeployModel):
+    def __init__(self,
+                 model_file,
+                 params_file="",
+                 runtime_option=None,
+                 model_format=ModelFormat.ONNX):
+        """Load a YOLOv7 model exported by YOLOv7.
+
+        :param model_file: (str)Path of model file, e.g ./yolov7.onnx
+        :param params_file: (str)Path of parameters file, e.g yolox/model.pdiparams, if the model_fomat is ModelFormat.ONNX, this param will be ignored, can be set as empty string
+        :param runtime_option: (fastdeploy.RuntimeOption)RuntimeOption for inference this model, if it's None, will use the default backend on CPU
+        :param model_format: (fastdeploy.ModelForamt)Model format of the loaded model
+        """
+        # 调用基函数进行backend_option的初始化
+        # 初始化后的option保存在self._runtime_option
+        super(YOLOv7, self).__init__(runtime_option)
+
+        assert model_format == ModelFormat.ONNX, "YOLOv7 only support model format of ModelFormat.ONNX now."
+        self._model = C.vision.detection.YOLOv7(
+            model_file, params_file, self._runtime_option, model_format)
+        # 通过self.initialized判断整个模型的初始化是否成功
+        assert self.initialized, "YOLOv7 initialize failed."
+
+    def predict(self, input_image, conf_threshold=0.25, nms_iou_threshold=0.5):
+        """Detect an input image
+
+        :param input_image: (numpy.ndarray)The input image data, 3-D array with layout HWC, BGR format
+        :param conf_threshold: confidence threshold for postprocessing, default is 0.25
+        :param nms_iou_threshold: iou threshold for NMS, default is 0.5
+        :return: DetectionResult
+        """
+
+        self.postprocessor.conf_threshold = conf_threshold
+        self.postprocessor.nms_threshold = nms_iou_threshold
+        return self._model.predict(input_image)
+
+    def batch_predict(self, images):
+        """Classify a batch of input image
+
+        :param im: (list of numpy.ndarray) The input image list, each element is a 3-D array with layout HWC, BGR format
+        :return list of DetectionResult
+        """
+
+        return self._model.batch_predict(images)
+
+    @property
+    def preprocessor(self):
+        """Get YOLOv7Preprocessor object of the loaded model
+
+        :return YOLOv7Preprocessor
+        """
+        return self._model.preprocessor
+
+    @property
+    def postprocessor(self):
+        """Get YOLOv7Postprocessor object of the loaded model
+
+        :return YOLOv7Postprocessor
+        """
+        return self._model.postprocessor
diff --git a/tests/models/test_yolov7.py b/tests/models/test_yolov7.py
new file mode 100755
index 0000000000..ba08fbaf5b
--- /dev/null
+++ b/tests/models/test_yolov7.py
@@ -0,0 +1,165 @@
+# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from fastdeploy import ModelFormat
+import fastdeploy as fd
+import cv2
+import os
+import pickle
+import numpy as np
+import runtime_config as rc
+
+
+def test_detection_yolov7():
+    model_url = "https://bj.bcebos.com/paddlehub/fastdeploy/yolov7.onnx"
+    input_url1 = "https://gitee.com/paddlepaddle/PaddleDetection/raw/release/2.4/demo/000000014439.jpg"
+    input_url2 = "https://gitee.com/paddlepaddle/PaddleDetection/raw/release/2.4/demo/000000570688.jpg"
+    result_url1 = "https://bj.bcebos.com/paddlehub/fastdeploy/yolov7_result1.pkl"
+    result_url2 = "https://bj.bcebos.com/paddlehub/fastdeploy/yolov7_result2.pkl"
+    fd.download(model_url, "resources")
+    fd.download(input_url1, "resources")
+    fd.download(input_url2, "resources")
+    fd.download(result_url1, "resources")
+    fd.download(result_url2, "resources")
+
+    model_file = "resources/yolov7.onnx"
+    model = fd.vision.detection.YOLOv7(
+        model_file, runtime_option=rc.test_option)
+
+    with open("resources/yolov7_result1.pkl", "rb") as f:
+        expect1 = pickle.load(f)
+
+    with open("resources/yolov7_result2.pkl", "rb") as f:
+        expect2 = pickle.load(f)
+
+    # compare diff
+    im1 = cv2.imread("./resources/000000014439.jpg")
+    im2 = cv2.imread("./resources/000000570688.jpg")
+
+    for i in range(3):
+        # test single predict
+        result1 = model.predict(im1)
+        result2 = model.predict(im2)
+
+        diff_boxes_1 = np.fabs(
+            np.array(result1.boxes) - np.array(expect1["boxes"]))
+        diff_boxes_2 = np.fabs(
+            np.array(result2.boxes) - np.array(expect2["boxes"]))
+
+        diff_label_1 = np.fabs(
+            np.array(result1.label_ids) - np.array(expect1["label_ids"]))
+        diff_label_2 = np.fabs(
+            np.array(result2.label_ids) - np.array(expect2["label_ids"]))
+
+        diff_scores_1 = np.fabs(
+            np.array(result1.scores) - np.array(expect1["scores"]))
+        diff_scores_2 = np.fabs(
+            np.array(result2.scores) - np.array(expect2["scores"]))
+
+        assert diff_boxes_1.max(
+        ) < 1e-06, "There's difference in detection boxes 1."
+        assert diff_label_1.max(
+        ) < 1e-06, "There's difference in detection label 1."
+        assert diff_scores_1.max(
+        ) < 1e-05, "There's difference in detection score 1."
+
+        assert diff_boxes_2.max(
+        ) < 1e-06, "There's difference in detection boxes 2."
+        assert diff_label_2.max(
+        ) < 1e-06, "There's difference in detection label 2."
+        assert diff_scores_2.max(
+        ) < 1e-05, "There's difference in detection score 2."
+
+        # test batch predict
+        results = model.batch_predict([im1, im2])
+        result1 = results[0]
+        result2 = results[1]
+
+        diff_boxes_1 = np.fabs(
+            np.array(result1.boxes) - np.array(expect1["boxes"]))
+        diff_boxes_2 = np.fabs(
+            np.array(result2.boxes) - np.array(expect2["boxes"]))
+
+        diff_label_1 = np.fabs(
+            np.array(result1.label_ids) - np.array(expect1["label_ids"]))
+        diff_label_2 = np.fabs(
+            np.array(result2.label_ids) - np.array(expect2["label_ids"]))
+
+        diff_scores_1 = np.fabs(
+            np.array(result1.scores) - np.array(expect1["scores"]))
+        diff_scores_2 = np.fabs(
+            np.array(result2.scores) - np.array(expect2["scores"]))
+        assert diff_boxes_1.max(
+        ) < 1e-06, "There's difference in detection boxes 1."
+        assert diff_label_1.max(
+        ) < 1e-06, "There's difference in detection label 1."
+        assert diff_scores_1.max(
+        ) < 1e-05, "There's difference in detection score 1."
+
+        assert diff_boxes_2.max(
+        ) < 1e-06, "There's difference in detection boxes 2."
+        assert diff_label_2.max(
+        ) < 1e-06, "There's difference in detection label 2."
+        assert diff_scores_2.max(
+        ) < 1e-05, "There's difference in detection score 2."
+
+
+def test_detection_yolov7_runtime():
+    model_url = "https://bj.bcebos.com/paddlehub/fastdeploy/yolov7.onnx"
+    input_url1 = "https://gitee.com/paddlepaddle/PaddleDetection/raw/release/2.4/demo/000000014439.jpg"
+    result_url1 = "https://bj.bcebos.com/paddlehub/fastdeploy/yolov7_result1.pkl"
+    fd.download(model_url, "resources")
+    fd.download(input_url1, "resources")
+    fd.download(result_url1, "resources")
+
+    model_file = "resources/yolov7.onnx"
+
+    preprocessor = fd.vision.detection.YOLOv7Preprocessor()
+    postprocessor = fd.vision.detection.YOLOv7Postprocessor()
+
+    rc.test_option.set_model_path(model_file, model_format=ModelFormat.ONNX)
+    rc.test_option.use_openvino_backend()
+    runtime = fd.Runtime(rc.test_option)
+
+    with open("resources/yolov7_result1.pkl", "rb") as f:
+        expect1 = pickle.load(f)
+
+    # compare diff
+    im1 = cv2.imread("./resources/000000014439.jpg")
+
+    for i in range(3):
+        # test runtime
+        input_tensors, ims_info = preprocessor.run([im1.copy()])
+        output_tensors = runtime.infer({"images": input_tensors[0]})
+        results = postprocessor.run(output_tensors, ims_info)
+        result1 = results[0]
+
+        diff_boxes_1 = np.fabs(
+            np.array(result1.boxes) - np.array(expect1["boxes"]))
+        diff_label_1 = np.fabs(
+            np.array(result1.label_ids) - np.array(expect1["label_ids"]))
+        diff_scores_1 = np.fabs(
+            np.array(result1.scores) - np.array(expect1["scores"]))
+
+        assert diff_boxes_1.max(
+        ) < 1e-04, "There's difference in detection boxes 1."
+        assert diff_label_1.max(
+        ) < 1e-06, "There's difference in detection label 1."
+        assert diff_scores_1.max(
+        ) < 1e-05, "There's difference in detection score 1."
+
+
+if __name__ == "__main__":
+    test_detection_yolov7()
+    test_detection_yolov7_runtime()