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new update in dev branch:Fix waymo converter to save img in .jpg(offical in waymo open) reduce dataset from 3.3T to 1.1T #1759

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merged 1 commit into from
Oct 27, 2022
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new update in dev branch:Fix waymo converter to save img in .jpg(offical in waymo open) reduce dataset from 3.3T to 1.1T #1759

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4 changes: 3 additions & 1 deletion tools/data_converter/kitti_data_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -46,8 +46,9 @@ def get_image_path(idx,
relative_path=True,
exist_check=True,
info_type='image_2',
file_tail='.png',
use_prefix_id=False):
return get_kitti_info_path(idx, prefix, info_type, '.png', training,
return get_kitti_info_path(idx, prefix, info_type, file_tail, training,
relative_path, exist_check, use_prefix_id)


Expand Down Expand Up @@ -378,6 +379,7 @@ def gather_single(self, idx):
self.training,
self.relative_path,
info_type='image_0',
file_tail='.jpg',
use_prefix_id=True)
if self.with_imageshape:
img_path = image_info['image_path']
Expand Down
10 changes: 6 additions & 4 deletions tools/data_converter/waymo_converter.py
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Original file line number Diff line number Diff line change
Expand Up @@ -130,7 +130,9 @@ def __len__(self):
return len(self.tfrecord_pathnames)

def save_image(self, frame, file_idx, frame_idx):
"""Parse and save the images in png format.
"""Parse and save the images in jpg format. Jpg is the original format
used by Waymo Open dataset. Saving in png format will cause huge (~3x)
unnesssary storage waste.

Args:
frame (:obj:`Frame`): Open dataset frame proto.
Expand All @@ -140,9 +142,9 @@ def save_image(self, frame, file_idx, frame_idx):
for img in frame.images:
img_path = f'{self.image_save_dir}{str(img.name - 1)}/' + \
f'{self.prefix}{str(file_idx).zfill(3)}' + \
f'{str(frame_idx).zfill(3)}.png'
img = mmcv.imfrombytes(img.image)
mmcv.imwrite(img, img_path)
f'{str(frame_idx).zfill(3)}.jpg'
with open(img_path, 'wb') as fp:
fp.write(img.image)

def save_calib(self, frame, file_idx, frame_idx):
"""Parse and save the calibration data.
Expand Down