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Fix memory leak problem in augment #676

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Fix memory leak problem in augment #676

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8 changes: 4 additions & 4 deletions basicsr/data/transforms.py
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Original file line number Diff line number Diff line change
Expand Up @@ -119,19 +119,19 @@ def augment(imgs, hflip=True, rotation=True, flows=None, return_status=False):

def _augment(img):
if hflip: # horizontal
cv2.flip(img, 1, img)
img = cv2.flip(img, 1) # Using inplace operations may cause memory leak
if vflip: # vertical
cv2.flip(img, 0, img)
img = cv2.flip(img, 0)
if rot90:
img = img.transpose(1, 0, 2)
return img

def _augment_flow(flow):
if hflip: # horizontal
cv2.flip(flow, 1, flow)
flow = cv2.flip(flow, 1)
flow[:, :, 0] *= -1
if vflip: # vertical
cv2.flip(flow, 0, flow)
flow = cv2.flip(flow, 0)
flow[:, :, 1] *= -1
if rot90:
flow = flow.transpose(1, 0, 2)
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