| /* |
| * Copyright (c) 2017 ARM Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| #include "NonMaximaSuppression.h" |
| |
| #include "Utils.h" |
| #include "tests/validation/Helpers.h" |
| |
| namespace arm_compute |
| { |
| namespace test |
| { |
| namespace validation |
| { |
| namespace reference |
| { |
| template <typename T> |
| SimpleTensor<T> non_maxima_suppression(const SimpleTensor<T> &src, BorderMode border_mode, T constant_border_value) |
| { |
| constexpr int block_size = 3; |
| SimpleTensor<T> dst(src.shape(), src.data_type(), src.num_channels()); |
| ValidRegion valid_region = shape_to_valid_region(src.shape(), border_mode == BorderMode::UNDEFINED, BorderSize(block_size / 2)); |
| |
| for(int i = 0; i < src.num_elements(); ++i) |
| { |
| Coordinates coord = index2coord(src.shape(), i); |
| int x = coord.x(); |
| int y = coord.y(); |
| |
| if(!is_in_valid_region(valid_region, coord)) |
| { |
| continue; |
| } |
| |
| 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) |
| && 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) |
| && 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) |
| && 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)) |
| { |
| dst[i] = src[i]; |
| } |
| else |
| { |
| dst[i] = T(0); |
| } |
| } |
| |
| return dst; |
| } |
| |
| template SimpleTensor<float> non_maxima_suppression(const SimpleTensor<float> &src, BorderMode border_mode, float constant_border_value); |
| } // namespace reference |
| } // namespace validation |
| } // namespace test |
| } // namespace arm_compute |