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onnx_model_demo.py
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onnx_model_demo.py
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#
# Copyright (c) 2022 Intel Corporation
#
# 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.
#
import sys
sys.path.append("../../common/python")
import argparse
import numpy as np
import cv2
from ovmsclient import make_grpc_client
import classes
def preprocess(img_data):
mean_vec = np.array([0.485, 0.456, 0.406])
stddev_vec = np.array([0.229, 0.224, 0.225])
norm_img_data = np.zeros(img_data.shape).astype('float32')
for i in range(img_data.shape[0]):
# for each pixel in each channel, divide the value by 255 to get value between [0, 1] and then normalize
norm_img_data[i,:,:] = (img_data[i,:,:]/255 - mean_vec[i]) / stddev_vec[i]
return norm_img_data
def getJpeg(path, size):
with open(path, mode='rb') as file:
content = file.read()
img = np.frombuffer(content, dtype=np.uint8)
img = cv2.imdecode(img, cv2.IMREAD_COLOR) # BGR format
# format of data is HWC
# add image preprocessing if needed by the model
img = cv2.resize(img, (224, 224))
img = img.astype('float32')
#convert to NCHW
img = img.transpose(2,0,1)
# normalize to adjust to model training dataset
img = preprocess(img)
img = img.reshape(1,3,size,size)
print(path, img.shape, "; data range:",np.amin(img),":",np.amax(img))
return img
parser = argparse.ArgumentParser(description='Run prediction on ONNX ResNet50 Model')
parser.add_argument('--image_path', required=False, default='../../common/static/images/bee.jpeg', help='Path to a file with a JPEG image')
parser.add_argument('--service_url',required=False, default='localhost:9001', help='Specify url to grpc service. default:localhost:9001')
parser.add_argument('--run_preprocessing',required=False, action="store_true", help='Specify if preprocessing should be run on the client side. default: False')
args = vars(parser.parse_args())
if args["run_preprocessing"]:
print("Running with preprocessing on client side")
img = getJpeg(args["image_path"], 224)
input_name = "gpu_0/data_0"
else:
print("Running without preprocessing on client side")
with open(args["image_path"], "rb") as f:
img = f.read()
input_name = "0"
client = make_grpc_client(args["service_url"])
output = client.predict({input_name: img}, "resnet")
max = np.argmax(output)
print("Class is with highest score: {}".format(max))
print("Detected class name: {}".format(classes.imagenet_classes[max]))