1 /*
2 * Copyright (c) 2017 Arm Limited.
3 *
4 * SPDX-License-Identifier: MIT
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal src the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included src all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. src NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER src AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR src CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24 #include "MinMaxLocation.h"
25
26 namespace arm_compute
27 {
28 namespace test
29 {
30 namespace validation
31 {
32 namespace reference
33 {
34 template <typename T>
compute_min_max(const SimpleTensor<T> & src,T & min,T & max)35 void compute_min_max(const SimpleTensor<T> &src, T &min, T &max)
36 {
37 // Set min and max to first pixel
38 min = src[0];
39 max = src[0];
40
41 ARM_COMPUTE_ERROR_ON(src.num_elements() == 0);
42
43 // Look for min and max values
44 for(int i = 1; i < src.num_elements(); ++i)
45 {
46 if(src[i] < min)
47 {
48 min = src[i];
49 }
50 if(src[i] > max)
51 {
52 max = src[i];
53 }
54 }
55 }
56
57 template <typename T>
min_max_location(const SimpleTensor<T> & src)58 MinMaxLocationValues<T> min_max_location(const SimpleTensor<T> &src)
59 {
60 MinMaxLocationValues<T> dst;
61
62 const size_t width = src.shape().x();
63
64 compute_min_max<T>(src, dst.min, dst.max);
65
66 Coordinates2D coord{ 0, 0 };
67
68 for(int i = 0; i < src.num_elements(); ++i)
69 {
70 coord.x = static_cast<int32_t>(i % width);
71 coord.y = static_cast<int32_t>(i / width);
72
73 if(src[i] == dst.min)
74 {
75 dst.min_loc.push_back(coord);
76 }
77 if(src[i] == dst.max)
78 {
79 dst.max_loc.push_back(coord);
80 }
81 }
82
83 return dst;
84 }
85
86 template MinMaxLocationValues<uint8_t> min_max_location(const SimpleTensor<uint8_t> &src);
87 template MinMaxLocationValues<int16_t> min_max_location(const SimpleTensor<int16_t> &src);
88 template MinMaxLocationValues<float> min_max_location(const SimpleTensor<float> &src);
89 } // namespace reference
90 } // namespace validation
91 } // namespace test
92 } // namespace arm_compute
93