Isabella Gottardi | 6eb9fca | 2017-10-11 12:16:57 +0100 | [diff] [blame] | 1 | /* |
Michele Di Giorgio | d9eaf61 | 2020-07-08 11:12:57 +0100 | [diff] [blame] | 2 | * Copyright (c) 2017-2019 Arm Limited. |
Isabella Gottardi | 6eb9fca | 2017-10-11 12:16:57 +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 "arm_compute/core/Helpers.h" |
| 25 | |
| 26 | #include "Median3x3.h" |
| 27 | #include "Utils.h" |
| 28 | |
| 29 | namespace arm_compute |
| 30 | { |
| 31 | namespace test |
| 32 | { |
| 33 | namespace validation |
| 34 | { |
| 35 | namespace reference |
| 36 | { |
| 37 | namespace |
| 38 | { |
| 39 | constexpr unsigned int filter_size = 3; /* Size of the kernel/filter in number of elements. */ |
| 40 | constexpr BorderSize border_size(filter_size / 2); /* Border size of the kernel/filter around its central element. */ |
| 41 | } // namespace |
| 42 | |
| 43 | template <typename T> |
| 44 | SimpleTensor<T> median3x3(const SimpleTensor<T> &src, BorderMode border_mode, T constant_border_value) |
| 45 | { |
| 46 | SimpleTensor<T> dst(src.shape(), src.data_type()); |
| 47 | const int size_tot_filter = filter_size * filter_size; |
Michalis Spyrou | fae513c | 2019-10-16 17:41:33 +0100 | [diff] [blame] | 48 | const uint32_t num_elements = src.num_elements(); |
Isabella Gottardi | 6eb9fca | 2017-10-11 12:16:57 +0100 | [diff] [blame] | 49 | |
Michalis Spyrou | fae513c | 2019-10-16 17:41:33 +0100 | [diff] [blame] | 50 | for(uint32_t src_idx = 0; src_idx < num_elements; ++src_idx) |
Isabella Gottardi | 6eb9fca | 2017-10-11 12:16:57 +0100 | [diff] [blame] | 51 | { |
| 52 | std::array<T, size_tot_filter> filter_elems = { { 0 } }; |
| 53 | Coordinates id = index2coord(src.shape(), src_idx); |
| 54 | const int x = id.x(); |
| 55 | const int y = id.y(); |
| 56 | |
| 57 | for(int j = y - static_cast<int>(border_size.top), index = 0; j <= y + static_cast<int>(border_size.bottom); ++j) |
| 58 | { |
| 59 | for(int i = x - static_cast<int>(border_size.left); i <= x + static_cast<int>(border_size.right); ++i, ++index) |
| 60 | { |
| 61 | id.set(0, i); |
| 62 | id.set(1, j); |
| 63 | filter_elems[index] = tensor_elem_at(src, id, border_mode, constant_border_value); |
| 64 | } |
| 65 | } |
| 66 | std::sort(filter_elems.begin(), filter_elems.end()); |
| 67 | dst[src_idx] = filter_elems[size_tot_filter / 2]; |
| 68 | } |
| 69 | |
| 70 | return dst; |
| 71 | } |
| 72 | |
| 73 | template SimpleTensor<uint8_t> median3x3(const SimpleTensor<uint8_t> &src, BorderMode border_mode, uint8_t constant_border_value); |
| 74 | } // namespace reference |
| 75 | } // namespace validation |
| 76 | } // namespace test |
| 77 | } // namespace arm_compute |