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