Moritz Pflanzer | 7655a67 | 2017-09-23 11:57:33 +0100 | [diff] [blame] | 1 | /* |
Michalis Spyrou | bcfd09a | 2019-05-01 13:03:59 +0100 | [diff] [blame] | 2 | * Copyright (c) 2017-2019 ARM Limited. |
Moritz Pflanzer | 7655a67 | 2017-09-23 11:57:33 +0100 | [diff] [blame] | 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 in 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 in 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. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | #include "Sobel.h" |
| 25 | |
| 26 | #include "Utils.h" |
| 27 | #include "tests/validation/Helpers.h" |
| 28 | |
| 29 | #include <array> |
| 30 | #include <map> |
| 31 | #include <utility> |
| 32 | |
| 33 | namespace arm_compute |
| 34 | { |
| 35 | namespace test |
| 36 | { |
| 37 | namespace validation |
| 38 | { |
| 39 | namespace reference |
| 40 | { |
| 41 | namespace |
| 42 | { |
| 43 | const std::array<int8_t, 9> sobel_3_x{ { -1, 0, 1, -2, 0, 2, -1, 0, 1 } }; |
| 44 | const std::array<int8_t, 9> sobel_3_y{ { -1, -2, -1, 0, 0, 0, 1, 2, 1 } }; |
| 45 | |
| 46 | const std::array<int8_t, 25> sobel_5_x{ { |
| 47 | -1, -2, 0, 2, 1, |
| 48 | -4, -8, 0, 8, 4, |
| 49 | -6, -12, 0, 12, 6, |
| 50 | -4, -8, 0, 8, 4, |
| 51 | -1, -2, 0, 2, 1 |
| 52 | } }; |
| 53 | |
| 54 | const std::array<int8_t, 25> sobel_5_y{ { |
| 55 | -1, -4, -6, -4, -1, |
| 56 | -2, -8, -12, -8, -2, |
| 57 | 0, 0, 0, 0, 0, |
| 58 | 2, 8, 12, 8, 2, |
| 59 | 1, 4, 6, 4, 1 |
| 60 | } }; |
| 61 | |
| 62 | const std::array<int8_t, 49> sobel_7_x{ { |
| 63 | -1, -4, -5, 0, 5, 4, 1, |
| 64 | -6, -24, -30, 0, 30, 24, 6, |
| 65 | -15, -60, -75, 0, 75, 60, 15, |
| 66 | -20, -80, -100, 0, 100, 80, 20, |
| 67 | -15, -60, -75, 0, 75, 60, 15, |
| 68 | -6, -24, -30, 0, 30, 24, 6, |
| 69 | -1, -4, -5, 0, 5, 4, 1 |
| 70 | } }; |
| 71 | |
| 72 | const std::array<int8_t, 49> sobel_7_y{ { |
| 73 | -1, -6, -15, -20, -15, -6, -1, |
| 74 | -4, -24, -60, -80, -60, -24, -4, |
| 75 | -5, -30, -75, -100, -75, -30, -5, |
| 76 | 0, 0, 0, 0, 0, 0, 0, |
| 77 | 5, 30, 75, 100, 75, 30, 5, |
| 78 | 4, 24, 60, 80, 60, 24, 4, |
| 79 | 1, 6, 15, 20, 15, 6, 1 |
| 80 | } }; |
| 81 | |
| 82 | const std::map<int, std::pair<const int8_t *, const int8_t *>> masks |
| 83 | { |
| 84 | { 3, { sobel_3_x.data(), sobel_3_y.data() } }, |
| 85 | { 5, { sobel_5_x.data(), sobel_5_y.data() } }, |
| 86 | { 7, { sobel_7_x.data(), sobel_7_y.data() } }, |
| 87 | }; |
| 88 | |
| 89 | template <typename T> |
| 90 | struct data_type; |
| 91 | |
| 92 | template <> |
| 93 | struct data_type<int16_t> |
| 94 | { |
| 95 | const static DataType value = DataType::S16; |
| 96 | }; |
| 97 | |
| 98 | template <> |
| 99 | struct data_type<int> |
| 100 | { |
| 101 | const static DataType value = DataType::S32; |
| 102 | }; |
| 103 | } // namespace |
| 104 | |
| 105 | template <typename T, typename U> |
Isabella Gottardi | 43ce898 | 2017-11-08 11:13:23 +0000 | [diff] [blame] | 106 | std::pair<SimpleTensor<T>, SimpleTensor<T>> sobel(const SimpleTensor<U> &src, int filter_size, BorderMode border_mode, uint8_t constant_border_value, GradientDimension gradient_dimension) |
Moritz Pflanzer | 7655a67 | 2017-09-23 11:57:33 +0100 | [diff] [blame] | 107 | { |
| 108 | SimpleTensor<T> dst_x(src.shape(), data_type<T>::value, src.num_channels()); |
| 109 | SimpleTensor<T> dst_y(src.shape(), data_type<T>::value, src.num_channels()); |
| 110 | |
| 111 | ValidRegion valid_region = shape_to_valid_region(src.shape(), border_mode == BorderMode::UNDEFINED, BorderSize(filter_size / 2)); |
| 112 | |
| 113 | for(int i = 0; i < src.num_elements(); ++i) |
| 114 | { |
| 115 | Coordinates coord = index2coord(src.shape(), i); |
| 116 | |
| 117 | if(!is_in_valid_region(valid_region, coord)) |
| 118 | { |
| 119 | continue; |
| 120 | } |
Isabella Gottardi | 43ce898 | 2017-11-08 11:13:23 +0000 | [diff] [blame] | 121 | switch(gradient_dimension) |
| 122 | { |
| 123 | case GradientDimension::GRAD_X: |
| 124 | apply_2d_spatial_filter(coord, src, dst_x, TensorShape{ static_cast<unsigned int>(filter_size), static_cast<unsigned int>(filter_size) }, masks.at(filter_size).first, 1.f, border_mode, |
| 125 | constant_border_value); |
| 126 | break; |
| 127 | case GradientDimension::GRAD_Y: |
| 128 | apply_2d_spatial_filter(coord, src, dst_y, TensorShape{ static_cast<unsigned int>(filter_size), static_cast<unsigned int>(filter_size) }, masks.at(filter_size).second, 1.f, border_mode, |
| 129 | constant_border_value); |
| 130 | break; |
| 131 | case GradientDimension::GRAD_XY: |
| 132 | apply_2d_spatial_filter(coord, src, dst_x, TensorShape{ static_cast<unsigned int>(filter_size), static_cast<unsigned int>(filter_size) }, masks.at(filter_size).first, 1.f, border_mode, |
| 133 | constant_border_value); |
| 134 | apply_2d_spatial_filter(coord, src, dst_y, TensorShape{ static_cast<unsigned int>(filter_size), static_cast<unsigned int>(filter_size) }, masks.at(filter_size).second, 1.f, border_mode, |
| 135 | constant_border_value); |
| 136 | break; |
| 137 | default: |
| 138 | ARM_COMPUTE_ERROR("Gradient dimension not supported"); |
| 139 | } |
Moritz Pflanzer | 7655a67 | 2017-09-23 11:57:33 +0100 | [diff] [blame] | 140 | } |
| 141 | |
| 142 | return std::make_pair(dst_x, dst_y); |
| 143 | } |
| 144 | |
Isabella Gottardi | 43ce898 | 2017-11-08 11:13:23 +0000 | [diff] [blame] | 145 | template std::pair<SimpleTensor<int16_t>, SimpleTensor<int16_t>> sobel(const SimpleTensor<uint8_t> &src, int filter_size, BorderMode border_mode, uint8_t constant_border_value, |
| 146 | GradientDimension gradient_dimension); |
| 147 | template std::pair<SimpleTensor<int>, SimpleTensor<int>> sobel(const SimpleTensor<uint8_t> &src, int filter_size, BorderMode border_mode, uint8_t constant_border_value, |
| 148 | GradientDimension gradient_dimension); |
Moritz Pflanzer | 7655a67 | 2017-09-23 11:57:33 +0100 | [diff] [blame] | 149 | } // namespace reference |
| 150 | } // namespace validation |
| 151 | } // namespace test |
| 152 | } // namespace arm_compute |