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Normalize and pil link fix #519

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merged 2 commits into from
May 26, 2018
Merged

Normalize and pil link fix #519

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8863226
Fix PIL link
kohr-h May 26, 2018
0bbbf34
Make normalize more efficient
kohr-h May 26, 2018
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10 changes: 5 additions & 5 deletions torchvision/transforms/functional.py
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Original file line number Diff line number Diff line change
Expand Up @@ -94,7 +94,7 @@ def to_pil_image(pic, mode=None):
pic (Tensor or numpy.ndarray): Image to be converted to PIL Image.
mode (`PIL.Image mode`_): color space and pixel depth of input data (optional).

.. _PIL.Image mode: http://pillow.readthedocs.io/en/3.4.x/handbook/concepts.html#modes
.. _PIL.Image mode: https://pillow.readthedocs.io/en/latest/handbook/concepts.html#concept-modes

Returns:
PIL Image: Image converted to PIL Image.
Expand Down Expand Up @@ -163,10 +163,10 @@ def normalize(tensor, mean, std):
"""
if not _is_tensor_image(tensor):
raise TypeError('tensor is not a torch image.')
# TODO: make efficient
for t, m, s in zip(tensor, mean, std):
t.sub_(m).div_(s)
return tensor

mean = torch.Tensor(mean).view((tensor.shape[0], 1, 1))
std = torch.Tensor(std).view((tensor.shape[0], 1, 1))
return tensor.sub_(mean).div_(std)


def resize(img, size, interpolation=Image.BILINEAR):
Expand Down