feat(data): 创建VOC 07数据集并解析其图像和标注文件

py/lib/data/pascal_voc_07.py

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+# -*- coding: utf-8 -*-
+
+"""
+@date: 2020/4/22 下午2:05
+@file: pascal_voc_07.py
+@author: zj
+@description: 下载并解压PASCAL VOC数据集
+"""
+
+import cv2
+import os
+import glob
+import shutil
+import numpy as np
+from torchvision.datasets import VOCDetection
+
+from utils import util
+
+
+def get_dataset(root_dir):
+    """
+    下载PASCAL VOC数据集
+    """
+    dataset = VOCDetection(root_dir, year='2007', image_set='trainval', download=True)
+
+    # img, target = dataset.__getitem__(1000)
+    # img = np.array(img)
+    # print(target)
+    # print(img.shape)
+
+    # cv2.imshow('img', img)
+    # cv2.waitKey(0)
+
+    return dataset
+
+
+def pretreat(src_root_dir, dst_root_dir):
+    """
+    判断源文件目录是否为空
+    清空结果文件目录，并新建图像和标注文件夹
+    :return:
+    """
+    if not os.path.exists(src_root_dir):
+        util.error("%s doesn't exist" % src_root_dir)
+    if os.path.exists(dst_root_dir):
+        shutil.rmtree(dst_root_dir)
+    os.mkdir(dst_root_dir)
+
+    dst_img_dir = os.path.join(dst_root_dir, 'imgs')
+    dst_annotation_dir = os.path.join(dst_root_dir, 'annotations')
+    os.mkdir(dst_img_dir)
+    os.mkdir(dst_annotation_dir)
+
+    return src_root_dir, dst_root_dir, dst_img_dir, dst_annotation_dir
+
+
+if __name__ == '__main__':
+    data_dir = '../../data'
+    data_set = get_dataset(data_dir)
+
+    src_root_dir = '../../data/VOCdevkit/VOC2007'
+    dst_root_dir = '../../data/VOC_dataset'
+    src_root_dir, dst_root_dir, dst_img_dir, dst_annotation_dir = pretreat(src_root_dir, dst_root_dir)
+
+    img_path_list = glob.glob(os.path.join(src_root_dir, 'JPEGImages', '*.jpg'))
+    annotation_path_list = glob.glob(os.path.join(src_root_dir, 'Annotations', '*.xml'))
+
+    for img_path in img_path_list:
+        dst_img_path = os.path.join(dst_img_dir, os.path.basename(img_path))
+        shutil.copyfile(img_path, dst_img_path)
+
+    for annotation_path in annotation_path_list:
+        dst_annotation_path = os.path.join(dst_annotation_dir, os.path.basename(annotation_path))
+        shutil.copyfile(annotation_path, dst_annotation_path)
+
+    print('done')