/* Copyright 2016 The TensorFlow Authors. All Rights Reserved.
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
you may not use this file except in compliance with the License.
|
You may obtain a copy of the License at
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
Unless required by applicable law or agreed to in writing, software
|
distributed under the License is distributed on an "AS IS" BASIS,
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
See the License for the specific language governing permissions and
|
limitations under the License.
|
==============================================================================*/
|
|
#ifndef TENSORFLOW_CORE_KERNELS_EXTRACT_IMAGE_PATCHES_OP_H_
|
#define TENSORFLOW_CORE_KERNELS_EXTRACT_IMAGE_PATCHES_OP_H_
|
|
#include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor"
|
#include "tensorflow/core/framework/tensor_shape.h"
|
#include "tensorflow/core/framework/tensor_types.h"
|
|
namespace tensorflow {
|
namespace functor {
|
|
template <typename Device, typename T>
|
struct ExtractImagePatchesForward {
|
void operator()(const Device& d, typename TTypes<T, 4>::ConstTensor input,
|
int patch_rows, int patch_cols, int stride_rows,
|
int stride_cols, int rate_rows, int rate_cols,
|
const Eigen::PaddingType& padding,
|
typename TTypes<T, 4>::Tensor output) {
|
// Need to swap row/col when calling Eigen, because our data is in
|
// NHWC format while Eigen assumes NWHC format.
|
const int64 N = std::max(input.size(), output.size());
|
if (N <= std::numeric_limits<Index32>::max()) {
|
auto output_32bit = To32Bit(output);
|
output_32bit.device(d) =
|
To32Bit(input)
|
.extract_image_patches(patch_cols, patch_rows, stride_cols,
|
stride_rows, rate_cols, rate_rows, padding)
|
.reshape(output_32bit.dimensions());
|
} else {
|
output.device(d) =
|
input
|
.extract_image_patches(patch_cols, patch_rows, stride_cols,
|
stride_rows, rate_cols, rate_rows, padding)
|
.reshape(output.dimensions());
|
}
|
}
|
};
|
|
} // namespace functor
|
} // namespace tensorflow
|
|
#endif // TENSORFLOW_CORE_KERNELS_EXTRACT_IMAGE_PATCHES_OP_H_
|
