33 lines
924 B
Python
33 lines
924 B
Python
# Copyright (c) OpenMMLab. All rights reserved.
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import argparse
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import mmcv
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def parse_args():
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parser = argparse.ArgumentParser(
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description='Convert iNaturalist2018 annotations to MMPretrain format.'
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)
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parser.add_argument('input', type=str, help='Input annotation json file.')
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parser.add_argument('output', type=str, help='Output list file.')
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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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data = mmcv.load(args.input)
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output_lines = []
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for img_item in data['images']:
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for ann_item in data['annotations']:
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if ann_item['image_id'] == img_item['id']:
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output_lines.append(
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f"{img_item['file_name']} {ann_item['category_id']}\n")
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assert len(output_lines) == len(data['images'])
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with open(args.output, 'w') as f:
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f.writelines(output_lines)
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if __name__ == '__main__':
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main()
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