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121 lines
3.4 KiB
C++
121 lines
3.4 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#include "main.h"
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#include <Eigen/CXX11/Tensor>
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using Eigen::Tensor;
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static void test_simple_patch()
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{
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Tensor<float, 4> tensor(2,3,5,7);
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tensor.setRandom();
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array<ptrdiff_t, 4> patch_dims;
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patch_dims[0] = 1;
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patch_dims[1] = 1;
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patch_dims[2] = 1;
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patch_dims[3] = 1;
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Tensor<float, 5> no_patch;
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no_patch = tensor.extract_patches(patch_dims);
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VERIFY_IS_EQUAL(no_patch.dimension(0), 1);
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VERIFY_IS_EQUAL(no_patch.dimension(1), 1);
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VERIFY_IS_EQUAL(no_patch.dimension(2), 1);
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VERIFY_IS_EQUAL(no_patch.dimension(3), 1);
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VERIFY_IS_EQUAL(no_patch.dimension(4), tensor.size());
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for (int i = 0; i < tensor.size(); ++i) {
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VERIFY_IS_EQUAL(tensor.data()[i], no_patch.data()[i]);
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}
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patch_dims[0] = 2;
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patch_dims[1] = 3;
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patch_dims[2] = 5;
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patch_dims[3] = 7;
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Tensor<float, 5> single_patch;
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single_patch = tensor.extract_patches(patch_dims);
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VERIFY_IS_EQUAL(single_patch.dimension(0), 2);
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VERIFY_IS_EQUAL(single_patch.dimension(1), 3);
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VERIFY_IS_EQUAL(single_patch.dimension(2), 5);
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VERIFY_IS_EQUAL(single_patch.dimension(3), 7);
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VERIFY_IS_EQUAL(single_patch.dimension(4), 1);
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for (int i = 0; i < tensor.size(); ++i) {
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VERIFY_IS_EQUAL(tensor.data()[i], single_patch.data()[i]);
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}
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patch_dims[0] = 1;
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patch_dims[1] = 2;
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patch_dims[2] = 2;
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patch_dims[3] = 1;
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Tensor<float, 5> twod_patch;
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twod_patch = tensor.extract_patches(patch_dims);
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VERIFY_IS_EQUAL(twod_patch.dimension(0), 1);
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VERIFY_IS_EQUAL(twod_patch.dimension(1), 2);
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VERIFY_IS_EQUAL(twod_patch.dimension(2), 2);
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VERIFY_IS_EQUAL(twod_patch.dimension(3), 1);
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VERIFY_IS_EQUAL(twod_patch.dimension(4), 2*2*4*7);
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 2; ++j) {
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for (int k = 0; k < 4; ++k) {
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for (int l = 0; l < 7; ++l) {
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int patch_loc = i + 2 * (j + 2 * (k + 4 * l));
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for (int x = 0; x < 2; ++x) {
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for (int y = 0; y < 2; ++y) {
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VERIFY_IS_EQUAL(tensor(i,j+x,k+y,l), twod_patch(0,x,y,0,patch_loc));
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}
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}
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}
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}
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}
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}
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patch_dims[0] = 1;
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patch_dims[1] = 2;
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patch_dims[2] = 3;
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patch_dims[3] = 5;
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Tensor<float, 5> threed_patch;
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threed_patch = tensor.extract_patches(patch_dims);
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VERIFY_IS_EQUAL(threed_patch.dimension(0), 1);
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VERIFY_IS_EQUAL(threed_patch.dimension(1), 2);
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VERIFY_IS_EQUAL(threed_patch.dimension(2), 3);
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VERIFY_IS_EQUAL(threed_patch.dimension(3), 5);
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VERIFY_IS_EQUAL(threed_patch.dimension(4), 2*2*3*3);
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for (int i = 0; i < 2; ++i) {
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for (int j = 0; j < 2; ++j) {
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for (int k = 0; k < 3; ++k) {
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for (int l = 0; l < 3; ++l) {
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int patch_loc = i + 2 * (j + 2 * (k + 3 * l));
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for (int x = 0; x < 2; ++x) {
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for (int y = 0; y < 3; ++y) {
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for (int z = 0; z < 5; ++z) {
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VERIFY_IS_EQUAL(tensor(i,j+x,k+y,l+z), threed_patch(0,x,y,z,patch_loc));
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}
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}
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}
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}
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}
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}
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}
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}
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void test_cxx11_tensor_patch()
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{
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CALL_SUBTEST(test_simple_patch());
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// CALL_SUBTEST(test_expr_shuffling());
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}
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