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import argparse
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import os.path as osp
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from mmaction.localization import load_localize_proposal_file
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from tools.data.parse_file_list import parse_directory
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def process_norm_proposal_file(norm_proposal_file, frame_dict):
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"""Process the normalized proposal file and denormalize it.
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Args:
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norm_proposal_file (str): Name of normalized proposal file.
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frame_dict (dict): Information of frame folders.
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"""
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proposal_file = norm_proposal_file.replace('normalized_', '')
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norm_proposals = load_localize_proposal_file(norm_proposal_file)
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processed_proposal_list = []
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for idx, norm_proposal in enumerate(norm_proposals):
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video_id = norm_proposal[0]
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frame_info = frame_dict[video_id]
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num_frames = frame_info[1]
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frame_path = osp.basename(frame_info[0])
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gt = [[
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int(x[0]),
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int(float(x[1]) * num_frames),
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int(float(x[2]) * num_frames)
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] for x in norm_proposal[2]]
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proposal = [[
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int(x[0]),
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float(x[1]),
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float(x[2]),
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int(float(x[3]) * num_frames),
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int(float(x[4]) * num_frames)
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] for x in norm_proposal[3]]
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gt_dump = '\n'.join(['{} {} {}'.format(*x) for x in gt])
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gt_dump += '\n' if len(gt) else ''
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proposal_dump = '\n'.join(
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['{} {:.04f} {:.04f} {} {}'.format(*x) for x in proposal])
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proposal_dump += '\n' if len(proposal) else ''
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processed_proposal_list.append(
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f'# {idx}\n{frame_path}\n{num_frames}\n1'
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f'\n{len(gt)}\n{gt_dump}{len(proposal)}\n{proposal_dump}')
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with open(proposal_file, 'w') as f:
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f.writelines(processed_proposal_list)
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def parse_args():
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parser = argparse.ArgumentParser(description='Denormalize proposal file')
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parser.add_argument(
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'dataset',
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type=str,
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choices=['thumos14'],
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help='dataset to be denormalize proposal file')
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parser.add_argument(
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'--norm-proposal-file',
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type=str,
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help='normalized proposal file to be denormalize')
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parser.add_argument(
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'--data-prefix',
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type=str,
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help='path to a directory where rawframes are held')
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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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print(f'Converting from {args.norm_proposal_file}.')
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frame_dict = parse_directory(args.data_prefix)
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process_norm_proposal_file(args.norm_proposal_file, frame_dict)
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if __name__ == '__main__':
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main()
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