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Diffstat (limited to 'tests/validation/CPP/Erode.cpp')
-rw-r--r-- | tests/validation/CPP/Erode.cpp | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/tests/validation/CPP/Erode.cpp b/tests/validation/CPP/Erode.cpp new file mode 100644 index 0000000000..5e8b36f47b --- /dev/null +++ b/tests/validation/CPP/Erode.cpp @@ -0,0 +1,81 @@ +/* + * 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 "Erode.h" + +#include "Utils.h" +#include "tests/validation/Helpers.h" + +#include <algorithm> +#include <array> + +namespace arm_compute +{ +namespace test +{ +namespace validation +{ +namespace reference +{ +template <typename T> +SimpleTensor<T> erode(const SimpleTensor<T> &src, BorderMode border_mode, T constant_border_value) +{ + /* + -1 x +1 + -1 [tl][tc][tr] -1 + y [ml][xy][mr] y + +1 [bl][bc][br] +1 + -1 x +1 + erode: + dst(x, y) = min[ src(x', y') for x-1<=x'<=x+1, y-1<=y'<=y+1 ] = min({tl, tc, tr, ml, xy, mr, bl, bc, br}) + */ + SimpleTensor<T> dst(src.shape(), src.data_type()); + + for(int i = 0; i < src.num_elements(); ++i) + { + Coordinates coord = index2coord(src.shape(), i); + const int x = coord.x(); + const int y = coord.y(); + + std::array<T, 9> neighbours = { { 0 } }; + for(int row = y - 1, j = 0; row <= y + 1; ++row) + { + for(int col = x - 1; col <= x + 1; ++col, ++j) + { + coord.set(0, col); + coord.set(1, row); + neighbours[j] = tensor_elem_at(src, coord, border_mode, constant_border_value); + } + } + + dst[i] = *std::min_element(neighbours.cbegin(), neighbours.cend()); + } + + return dst; +} + +template SimpleTensor<uint8_t> erode(const SimpleTensor<uint8_t> &src, BorderMode border_mode, uint8_t constant_border_value); +} // namespace reference +} // namespace validation +} // namespace test +} // namespace arm_compute |