def _load_image_set_index(self):
        # Example path to image set file:
        # self._devkit_path + /VOCdevkit2007/VOC2007/ImageSets/Main/val.txt
        image_set_file = os.path.join(self._data_path, 'ImageSets', 'Main',
                                      self._image_set + '.txt')
        assert os.path.exists(image_set_file), \
                'Path does not exist: {}'.format(image_set_file)
        with open(image_set_file) as f:
            image_index = [x.strip() for x in f.readlines()]
        return image_index
Log information from the edge case of tiles present on dbname_present,
dataset/ETHPy150Open rbgirshick/fast-rcnn/lib/datasets/pascal_voc.py/pascal_voc._load_image_set_index--crossover with--dataset/ETHPy150Open GeoscienceAustralia/agdc/src/tilecompare.py/_log_missing_tile_info