cxx11_tensor_patch.cpp
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1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2014 Benoit Steiner <benoit.steiner.goog@gmail.com>
5 //
6 // This Source Code Form is subject to the terms of the Mozilla
7 // Public License v. 2.0. If a copy of the MPL was not distributed
8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
9 
10 #include "main.h"
11 
12 #include <Eigen/CXX11/Tensor>
13 
14 using Eigen::Tensor;
15 
16 template<int DataLayout>
17 static void test_simple_patch()
18 {
19  Tensor<float, 4, DataLayout> tensor(2,3,5,7);
20  tensor.setRandom();
21  array<ptrdiff_t, 4> patch_dims;
22 
23  patch_dims[0] = 1;
24  patch_dims[1] = 1;
25  patch_dims[2] = 1;
26  patch_dims[3] = 1;
27 
29  no_patch = tensor.extract_patches(patch_dims);
30 
31  if (DataLayout == ColMajor) {
32  VERIFY_IS_EQUAL(no_patch.dimension(0), 1);
33  VERIFY_IS_EQUAL(no_patch.dimension(1), 1);
34  VERIFY_IS_EQUAL(no_patch.dimension(2), 1);
35  VERIFY_IS_EQUAL(no_patch.dimension(3), 1);
36  VERIFY_IS_EQUAL(no_patch.dimension(4), tensor.size());
37  } else {
38  VERIFY_IS_EQUAL(no_patch.dimension(0), tensor.size());
39  VERIFY_IS_EQUAL(no_patch.dimension(1), 1);
40  VERIFY_IS_EQUAL(no_patch.dimension(2), 1);
41  VERIFY_IS_EQUAL(no_patch.dimension(3), 1);
42  VERIFY_IS_EQUAL(no_patch.dimension(4), 1);
43  }
44 
45  for (int i = 0; i < tensor.size(); ++i) {
46  VERIFY_IS_EQUAL(tensor.data()[i], no_patch.data()[i]);
47  }
48 
49  patch_dims[0] = 2;
50  patch_dims[1] = 3;
51  patch_dims[2] = 5;
52  patch_dims[3] = 7;
53  Tensor<float, 5, DataLayout> single_patch;
54  single_patch = tensor.extract_patches(patch_dims);
55 
56  if (DataLayout == ColMajor) {
57  VERIFY_IS_EQUAL(single_patch.dimension(0), 2);
58  VERIFY_IS_EQUAL(single_patch.dimension(1), 3);
59  VERIFY_IS_EQUAL(single_patch.dimension(2), 5);
60  VERIFY_IS_EQUAL(single_patch.dimension(3), 7);
61  VERIFY_IS_EQUAL(single_patch.dimension(4), 1);
62  } else {
63  VERIFY_IS_EQUAL(single_patch.dimension(0), 1);
64  VERIFY_IS_EQUAL(single_patch.dimension(1), 2);
65  VERIFY_IS_EQUAL(single_patch.dimension(2), 3);
66  VERIFY_IS_EQUAL(single_patch.dimension(3), 5);
67  VERIFY_IS_EQUAL(single_patch.dimension(4), 7);
68  }
69 
70  for (int i = 0; i < tensor.size(); ++i) {
71  VERIFY_IS_EQUAL(tensor.data()[i], single_patch.data()[i]);
72  }
73 
74  patch_dims[0] = 1;
75  patch_dims[1] = 2;
76  patch_dims[2] = 2;
77  patch_dims[3] = 1;
79  twod_patch = tensor.extract_patches(patch_dims);
80 
81  if (DataLayout == ColMajor) {
82  VERIFY_IS_EQUAL(twod_patch.dimension(0), 1);
83  VERIFY_IS_EQUAL(twod_patch.dimension(1), 2);
84  VERIFY_IS_EQUAL(twod_patch.dimension(2), 2);
85  VERIFY_IS_EQUAL(twod_patch.dimension(3), 1);
86  VERIFY_IS_EQUAL(twod_patch.dimension(4), 2*2*4*7);
87  } else {
88  VERIFY_IS_EQUAL(twod_patch.dimension(0), 2*2*4*7);
89  VERIFY_IS_EQUAL(twod_patch.dimension(1), 1);
90  VERIFY_IS_EQUAL(twod_patch.dimension(2), 2);
91  VERIFY_IS_EQUAL(twod_patch.dimension(3), 2);
92  VERIFY_IS_EQUAL(twod_patch.dimension(4), 1);
93  }
94 
95  for (int i = 0; i < 2; ++i) {
96  for (int j = 0; j < 2; ++j) {
97  for (int k = 0; k < 4; ++k) {
98  for (int l = 0; l < 7; ++l) {
99  int patch_loc;
100  if (DataLayout == ColMajor) {
101  patch_loc = i + 2 * (j + 2 * (k + 4 * l));
102  } else {
103  patch_loc = l + 7 * (k + 4 * (j + 2 * i));
104  }
105  for (int x = 0; x < 2; ++x) {
106  for (int y = 0; y < 2; ++y) {
107  if (DataLayout == ColMajor) {
108  VERIFY_IS_EQUAL(tensor(i,j+x,k+y,l), twod_patch(0,x,y,0,patch_loc));
109  } else {
110  VERIFY_IS_EQUAL(tensor(i,j+x,k+y,l), twod_patch(patch_loc,0,x,y,0));
111  }
112  }
113  }
114  }
115  }
116  }
117  }
118 
119  patch_dims[0] = 1;
120  patch_dims[1] = 2;
121  patch_dims[2] = 3;
122  patch_dims[3] = 5;
123  Tensor<float, 5, DataLayout> threed_patch;
124  threed_patch = tensor.extract_patches(patch_dims);
125 
126  if (DataLayout == ColMajor) {
127  VERIFY_IS_EQUAL(threed_patch.dimension(0), 1);
128  VERIFY_IS_EQUAL(threed_patch.dimension(1), 2);
129  VERIFY_IS_EQUAL(threed_patch.dimension(2), 3);
130  VERIFY_IS_EQUAL(threed_patch.dimension(3), 5);
131  VERIFY_IS_EQUAL(threed_patch.dimension(4), 2*2*3*3);
132  } else {
133  VERIFY_IS_EQUAL(threed_patch.dimension(0), 2*2*3*3);
134  VERIFY_IS_EQUAL(threed_patch.dimension(1), 1);
135  VERIFY_IS_EQUAL(threed_patch.dimension(2), 2);
136  VERIFY_IS_EQUAL(threed_patch.dimension(3), 3);
137  VERIFY_IS_EQUAL(threed_patch.dimension(4), 5);
138  }
139 
140  for (int i = 0; i < 2; ++i) {
141  for (int j = 0; j < 2; ++j) {
142  for (int k = 0; k < 3; ++k) {
143  for (int l = 0; l < 3; ++l) {
144  int patch_loc;
145  if (DataLayout == ColMajor) {
146  patch_loc = i + 2 * (j + 2 * (k + 3 * l));
147  } else {
148  patch_loc = l + 3 * (k + 3 * (j + 2 * i));
149  }
150  for (int x = 0; x < 2; ++x) {
151  for (int y = 0; y < 3; ++y) {
152  for (int z = 0; z < 5; ++z) {
153  if (DataLayout == ColMajor) {
154  VERIFY_IS_EQUAL(tensor(i,j+x,k+y,l+z), threed_patch(0,x,y,z,patch_loc));
155  } else {
156  VERIFY_IS_EQUAL(tensor(i,j+x,k+y,l+z), threed_patch(patch_loc,0,x,y,z));
157  }
158  }
159  }
160  }
161  }
162  }
163  }
164  }
165 }
166 
168 {
169  CALL_SUBTEST(test_simple_patch<ColMajor>());
170  CALL_SUBTEST(test_simple_patch<RowMajor>());
171  // CALL_SUBTEST(test_expr_shuffling());
172 }
Scalar * y
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Index dimension(std::size_t n) const
Definition: Tensor.h:101
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Tensor< Scalar_, NumIndices_, Options_, IndexType_ > & setRandom()
Definition: TensorBase.h:850
static void test_simple_patch()
static const Line3 l(Rot3(), 1, 1)
#define VERIFY_IS_EQUAL(a, b)
Definition: main.h:331
void test_cxx11_tensor_patch()
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Scalar * data()
Definition: Tensor.h:104
#define CALL_SUBTEST(FUNC)
Definition: main.h:342
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std::ptrdiff_t j
The tensor class.
Definition: Tensor.h:63
EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Index size() const
Definition: Tensor.h:103


gtsam
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autogenerated on Sat May 8 2021 02:41:56