Moritz Pflanzer | 6c6597c | 2017-09-24 12:09:41 +0100 | [diff] [blame] | 1 | /* |
Abe Mbise | 25a340f | 2017-12-19 13:00:58 +0000 | [diff] [blame] | 2 | * Copyright (c) 2017-2018 ARM Limited. |
Moritz Pflanzer | 6c6597c | 2017-09-24 12:09:41 +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 "NonMaximaSuppression.h" |
| 25 | |
| 26 | #include "Utils.h" |
| 27 | #include "tests/validation/Helpers.h" |
| 28 | |
| 29 | namespace arm_compute |
| 30 | { |
| 31 | namespace test |
| 32 | { |
| 33 | namespace validation |
| 34 | { |
| 35 | namespace reference |
| 36 | { |
| 37 | template <typename T> |
| 38 | SimpleTensor<T> non_maxima_suppression(const SimpleTensor<T> &src, BorderMode border_mode, T constant_border_value) |
| 39 | { |
| 40 | constexpr int block_size = 3; |
| 41 | SimpleTensor<T> dst(src.shape(), src.data_type(), src.num_channels()); |
| 42 | ValidRegion valid_region = shape_to_valid_region(src.shape(), border_mode == BorderMode::UNDEFINED, BorderSize(block_size / 2)); |
| 43 | |
| 44 | for(int i = 0; i < src.num_elements(); ++i) |
| 45 | { |
| 46 | Coordinates coord = index2coord(src.shape(), i); |
| 47 | int x = coord.x(); |
| 48 | int y = coord.y(); |
| 49 | |
| 50 | if(!is_in_valid_region(valid_region, coord)) |
| 51 | { |
| 52 | continue; |
| 53 | } |
| 54 | |
| 55 | if(src[i] >= tensor_elem_at(src, Coordinates(x - 1, y - 1), border_mode, constant_border_value) && src[i] >= tensor_elem_at(src, Coordinates(x, y - 1), border_mode, constant_border_value) |
| 56 | && src[i] >= tensor_elem_at(src, Coordinates(x + 1, y - 1), border_mode, constant_border_value) && src[i] >= tensor_elem_at(src, Coordinates(x - 1, y), border_mode, constant_border_value) |
| 57 | && src[i] > tensor_elem_at(src, Coordinates(x + 1, y), border_mode, constant_border_value) && src[i] > tensor_elem_at(src, Coordinates(x - 1, y + 1), border_mode, constant_border_value) |
| 58 | && src[i] > tensor_elem_at(src, Coordinates(x, y + 1), border_mode, constant_border_value) && src[i] > tensor_elem_at(src, Coordinates(x + 1, y + 1), border_mode, constant_border_value)) |
| 59 | { |
| 60 | dst[i] = src[i]; |
| 61 | } |
| 62 | else |
| 63 | { |
| 64 | dst[i] = T(0); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | return dst; |
| 69 | } |
| 70 | |
| 71 | template SimpleTensor<float> non_maxima_suppression(const SimpleTensor<float> &src, BorderMode border_mode, float constant_border_value); |
Abe Mbise | 25a340f | 2017-12-19 13:00:58 +0000 | [diff] [blame] | 72 | template SimpleTensor<uint8_t> non_maxima_suppression(const SimpleTensor<uint8_t> &src, BorderMode border_mode, uint8_t constant_border_value); |
Moritz Pflanzer | 6c6597c | 2017-09-24 12:09:41 +0100 | [diff] [blame] | 73 | } // namespace reference |
| 74 | } // namespace validation |
| 75 | } // namespace test |
| 76 | } // namespace arm_compute |