78 lines
2.9 KiB
C++
78 lines
2.9 KiB
C++
/*
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* Copyright (c) 2017-2019 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 "arm_compute/core/Helpers.h"
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#include "Median3x3.h"
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#include "Utils.h"
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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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namespace
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{
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constexpr unsigned int filter_size = 3; /* Size of the kernel/filter in number of elements. */
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constexpr BorderSize border_size(filter_size / 2); /* Border size of the kernel/filter around its central element. */
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} // namespace
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template <typename T>
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SimpleTensor<T> median3x3(const SimpleTensor<T> &src, BorderMode border_mode, T constant_border_value)
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{
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SimpleTensor<T> dst(src.shape(), src.data_type());
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const int size_tot_filter = filter_size * filter_size;
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const uint32_t num_elements = src.num_elements();
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for(uint32_t src_idx = 0; src_idx < num_elements; ++src_idx)
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{
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std::array<T, size_tot_filter> filter_elems = { { 0 } };
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Coordinates id = index2coord(src.shape(), src_idx);
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const int x = id.x();
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const int y = id.y();
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for(int j = y - static_cast<int>(border_size.top), index = 0; j <= y + static_cast<int>(border_size.bottom); ++j)
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{
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for(int i = x - static_cast<int>(border_size.left); i <= x + static_cast<int>(border_size.right); ++i, ++index)
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{
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id.set(0, i);
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id.set(1, j);
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filter_elems[index] = tensor_elem_at(src, id, border_mode, constant_border_value);
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}
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}
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std::sort(filter_elems.begin(), filter_elems.end());
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dst[src_idx] = filter_elems[size_tot_filter / 2];
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}
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return dst;
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}
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template SimpleTensor<uint8_t> median3x3(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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