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Posted to commits@mxnet.apache.org by GitBox <gi...@apache.org> on 2019/01/28 19:43:32 UTC
[GitHub] zhreshold commented on a change in pull request #13837: Image
ToTensor operator - GPU support, 3D/4D inputs
zhreshold commented on a change in pull request #13837: Image ToTensor operator - GPU support, 3D/4D inputs
URL: https://github.com/apache/incubator-mxnet/pull/13837#discussion_r251565134
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File path: src/operator/image/image_random.cc
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@@ -39,14 +39,43 @@ DMLC_REGISTER_PARAMETER(RandomLightingParam);
DMLC_REGISTER_PARAMETER(RandomColorJitterParam);
NNVM_REGISTER_OP(_image_to_tensor)
-.describe(R"code()code" ADD_FILELINE)
+.describe(R"code(Converts an image NDArray of shape (H x W x C) or (N x H x W x C)
+with values in the range [0, 255] to a tensor NDArray of shape (C x H x W) or (N x C x H x W)
+with values in the range [0, 1)
+
+Example:
+ .. code-block:: python
+ image = mx.nd.random.uniform(0, 255, (4, 2, 3)).astype(dtype=np.uint8)
+ to_tensor(image)
+ [[[ 0.85490197 0.72156864]
+ [ 0.09019608 0.74117649]
+ [ 0.61960787 0.92941177]
+ [ 0.96470588 0.1882353 ]]
+ [[ 0.6156863 0.73725492]
+ [ 0.46666667 0.98039216]
+ [ 0.44705883 0.45490196]
+ [ 0.01960784 0.8509804 ]]
+ [[ 0.39607844 0.03137255]
+ [ 0.72156864 0.52941179]
+ [ 0.16470589 0.7647059 ]
+ [ 0.05490196 0.70588237]]]
+ <NDArray 3x4x2 @cpu(0)>
Review comment:
need a 4D example
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