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import argparse |
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import json |
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import mmcv |
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from mmocr.utils import list_to_file |
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def parse_coco_json(in_path): |
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json_obj = mmcv.load(in_path) |
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image_infos = json_obj['images'] |
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annotations = json_obj['annotations'] |
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imgid2imgname = {} |
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img_ids = [] |
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for image_info in image_infos: |
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imgid2imgname[image_info['id']] = image_info |
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img_ids.append(image_info['id']) |
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imgid2anno = {} |
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for img_id in img_ids: |
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imgid2anno[img_id] = [] |
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for anno in annotations: |
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img_id = anno['image_id'] |
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new_anno = {} |
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new_anno['iscrowd'] = anno['iscrowd'] |
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new_anno['category_id'] = anno['category_id'] |
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new_anno['bbox'] = anno['bbox'] |
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new_anno['segmentation'] = anno['segmentation'] |
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if img_id in imgid2anno.keys(): |
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imgid2anno[img_id].append(new_anno) |
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return imgid2imgname, imgid2anno |
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def gen_line_dict_file(out_path, imgid2imgname, imgid2anno): |
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lines = [] |
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for key, value in imgid2imgname.items(): |
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if key in imgid2anno: |
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anno = imgid2anno[key] |
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line_dict = {} |
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line_dict['file_name'] = value['file_name'] |
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line_dict['height'] = value['height'] |
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line_dict['width'] = value['width'] |
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line_dict['annotations'] = anno |
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lines.append(json.dumps(line_dict)) |
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list_to_file(out_path, lines) |
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def parse_args(): |
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parser = argparse.ArgumentParser() |
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parser.add_argument('--in-path', help='input json path with coco format') |
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parser.add_argument( |
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'--out-path', help='output txt path with line-json format') |
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args = parser.parse_args() |
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return args |
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def main(): |
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args = parse_args() |
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imgid2imgname, imgid2anno = parse_coco_json(args.in_path) |
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gen_line_dict_file(args.out_path, imgid2imgname, imgid2anno) |
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print('finish') |
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if __name__ == '__main__': |
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main() |
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