86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
/*
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* Copyright (c) 2017-2020 Arm Limited.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "Dilate.h"
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#include "Utils.h"
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#include "tests/validation/Helpers.h"
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#include <algorithm>
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#include <array>
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namespace arm_compute
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{
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namespace test
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{
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namespace validation
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{
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namespace reference
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{
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template <typename T>
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SimpleTensor<T> dilate(const SimpleTensor<T> &src, BorderMode border_mode, T constant_border_value)
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{
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/*
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-1 x +1
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-1 [tl][tc][tr] -1
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y [ml][xy][mr] y
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+1 [bl][bc][br] +1
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-1 x +1
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dilate:
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dst(x, y) = max[ src(x', y') for x-1<=x'<=x+1, y-1<=y'<=y+1 ] = max({tl, tc, tr, ml, xy, mr, bl, bc, br})
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*/
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SimpleTensor<T> dst(src.shape(), src.data_type());
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const uint32_t num_elements = src.num_elements();
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#if defined(_OPENMP)
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#pragma omp parallel for
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#endif /* _OPENMP */
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for(uint32_t i = 0; i < num_elements; ++i)
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{
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Coordinates coord = index2coord(src.shape(), i);
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const int x = coord.x();
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const int y = coord.y();
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std::array<T, 9> neighbours = { { 0 } };
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for(int row = y - 1, j = 0; row <= y + 1; ++row)
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{
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for(int col = x - 1; col <= x + 1; ++col, ++j)
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{
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coord.set(0, col);
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coord.set(1, row);
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neighbours[j] = tensor_elem_at(src, coord, border_mode, constant_border_value);
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}
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}
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dst[i] = *std::max_element(neighbours.cbegin(), neighbours.cend());
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}
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return dst;
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}
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template SimpleTensor<uint8_t> dilate(const SimpleTensor<uint8_t> &src, BorderMode border_mode, uint8_t constant_border_value);
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} // namespace reference
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} // namespace validation
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} // namespace test
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} // namespace arm_compute
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