coco_dataset.py 文件源码

def image_path_from_index(self, index):
        """
        Construct an image path from the image's "index" identifier.
        """
        # Example image path for index=119993:
        #   train2014/COCO_train2014_000000119993.jpg
        image = self.COCO.loadImgs(index)[0]
        image_path = osp.join(self.data_dir, self.data_name, image['file_name'])
        assert osp.exists(image_path), 'Path does not exist: {}'.format(image_path)
        return image_path