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car-detection-bayes
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updates

This commit is contained in:
Glenn Jocher 2019-07-09 18:40:29 +02:00
parent 7b8a134a0b
commit bf6d96330b
1 changed files with 6 additions and 6 deletions
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12
utils/datasets.py
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@ -158,14 +158,14 @@ class LoadImagesAndLabels(Dataset): # for training/testing
# Read image shapes
sp = 'data' + os.sep + path.replace('.txt', '.shapes').split(os.sep)[-1] # shapefile path
if os.path.exists(sp): # read existing shapefile
with open(sp, 'r') as f:
s = np.array([x.split() for x in f.read().splitlines()], dtype=np.float32)
assert len(s) == n, 'Shapefile out of sync, please delete %s and rerun' % sp
else: # no shapefile, so read shape using PIL and write shapefile for next time (faster)
s = np.array([Image.open(f).size for f in tqdm(self.img_files, desc='Reading image shapes')])
if not os.path.exists(sp): # read shapes using PIL and write shapefile for next time (faster)
s = [Image.open(f).size for f in tqdm(self.img_files, desc='Reading image shapes')]
np.savetxt(sp, s, fmt='%g')
with open(sp, 'r') as f: # read existing shapefile
s = np.array([x.split() for x in f.read().splitlines()], dtype=np.float64)
assert len(s) == n, 'Shapefile error. Please delete %s and rerun' % sp # TODO: auto-delete shapefile
# Sort by aspect ratio
ar = s[:, 1] / s[:, 0] # aspect ratio
i = ar.argsort()