John Richardson | 2d008a4 | 2018-03-22 13:48:41 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2018 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 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 "LaplacianPyramid.h" |
| 25 | |
| 26 | #include "tests/validation/reference/ArithmeticSubtraction.h" |
| 27 | #include "tests/validation/reference/DepthConvertLayer.h" |
| 28 | #include "tests/validation/reference/Gaussian5x5.h" |
| 29 | #include "tests/validation/reference/GaussianPyramidHalf.h" |
| 30 | |
| 31 | namespace arm_compute |
| 32 | { |
| 33 | namespace test |
| 34 | { |
| 35 | namespace validation |
| 36 | { |
| 37 | namespace reference |
| 38 | { |
| 39 | template <typename T, typename U> |
| 40 | std::vector<SimpleTensor<U>> laplacian_pyramid(const SimpleTensor<T> &src, SimpleTensor<U> &dst, size_t num_levels, BorderMode border_mode, uint8_t constant_border_value) |
| 41 | { |
| 42 | std::vector<SimpleTensor<T>> pyramid_conv; |
| 43 | std::vector<SimpleTensor<U>> pyramid_dst; |
| 44 | |
| 45 | // First, a Gaussian pyramid with SCALE_PYRAMID_HALF is created |
| 46 | std::vector<SimpleTensor<T>> gaussian_level_pyramid = reference::gaussian_pyramid_half(src, border_mode, constant_border_value, num_levels); |
| 47 | |
| 48 | // For each level i, the corresponding image Ii is blurred with Gaussian 5x5 |
| 49 | // filter, and the difference between the two images is the corresponding |
| 50 | // level Li of the Laplacian pyramid |
| 51 | for(size_t i = 0; i < num_levels; ++i) |
| 52 | { |
| 53 | const SimpleTensor<T> level_filtered = reference::gaussian5x5(gaussian_level_pyramid[i], border_mode, constant_border_value); |
| 54 | pyramid_conv.push_back(level_filtered); |
| 55 | |
| 56 | const SimpleTensor<U> level_sub = reference::arithmetic_subtraction<T, T, U>(gaussian_level_pyramid[i], level_filtered, dst.data_type(), ConvertPolicy::WRAP); |
| 57 | pyramid_dst.push_back(level_sub); |
| 58 | } |
| 59 | |
| 60 | // Return the lowest resolution image and the pyramid |
| 61 | dst = depth_convert<T, U>(pyramid_conv[num_levels - 1], DataType::S16, ConvertPolicy::WRAP, 0); |
| 62 | |
| 63 | return pyramid_dst; |
| 64 | } |
| 65 | |
| 66 | template std::vector<SimpleTensor<int16_t>> laplacian_pyramid(const SimpleTensor<uint8_t> &src, SimpleTensor<int16_t> &dst, size_t num_levels, BorderMode border_mode, uint8_t constant_border_value); |
| 67 | } // namespace reference |
| 68 | } // namespace validation |
| 69 | } // namespace test |
| 70 | } // namespace arm_compute |