136 lines
5.2 KiB
C++
136 lines
5.2 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 "WarpAffine.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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bool valid_bilinear_policy(float xn, float yn, int width, int height, BorderMode border_mode)
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{
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if(border_mode != BorderMode::UNDEFINED)
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{
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return true;
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}
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if((0 <= yn + 1) && (yn + 1 < height) && (0 <= xn + 1) && (xn + 1 < width))
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{
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return true;
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}
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return false;
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}
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template <typename T>
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SimpleTensor<T> warp_affine(const SimpleTensor<T> &src, SimpleTensor<T> &valid_mask, const float *matrix, InterpolationPolicy policy, BorderMode border_mode, uint8_t constant_border_value)
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{
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SimpleTensor<T> dst(src.shape(), src.data_type());
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// x0 = M00 * x + M01 * y + M02
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// y0 = M10 * x + M11 * y + M12
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const float M00 = matrix[0];
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const float M10 = matrix[1];
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const float M01 = matrix[0 + 1 * 2];
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const float M11 = matrix[1 + 1 * 2];
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const float M02 = matrix[0 + 2 * 2];
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const float M12 = matrix[1 + 2 * 2];
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const int width = src.shape().x();
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const int height = src.shape().y();
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const uint32_t num_elements = src.num_elements();
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for(uint32_t element_idx = 0; element_idx < num_elements; ++element_idx)
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{
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valid_mask[element_idx] = 1;
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Coordinates id = index2coord(src.shape(), element_idx);
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int idx = id.x();
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int idy = id.y();
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float x0 = M00 * idx + M01 * idy + M02;
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float y0 = M10 * idx + M11 * idy + M12;
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id.set(0, static_cast<int>(std::floor(x0)));
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id.set(1, static_cast<int>(std::floor(y0)));
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if((0 <= y0) && (y0 < height) && (0 <= x0) && (x0 < width))
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{
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switch(policy)
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{
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case InterpolationPolicy::NEAREST_NEIGHBOR:
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dst[element_idx] = tensor_elem_at(src, id, border_mode, constant_border_value);
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break;
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case InterpolationPolicy::BILINEAR:
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(valid_bilinear_policy(x0, y0, width, height, border_mode)) ? dst[element_idx] = bilinear_policy(src, id, x0, y0, border_mode, constant_border_value) :
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valid_mask[element_idx] = 0;
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break;
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case InterpolationPolicy::AREA:
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default:
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ARM_COMPUTE_ERROR("Interpolation not supported");
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}
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}
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else
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{
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if(border_mode == BorderMode::UNDEFINED)
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{
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valid_mask[element_idx] = 0;
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}
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else
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{
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switch(policy)
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{
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case InterpolationPolicy::NEAREST_NEIGHBOR:
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if(border_mode == BorderMode::CONSTANT)
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{
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dst[element_idx] = constant_border_value;
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}
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else if(border_mode == BorderMode::REPLICATE)
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{
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id.set(0, std::max(0, std::min(static_cast<int>(x0), width - 1)));
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id.set(1, std::max(0, std::min(static_cast<int>(y0), height - 1)));
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dst[element_idx] = src[coord2index(src.shape(), id)];
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}
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break;
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case InterpolationPolicy::BILINEAR:
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dst[element_idx] = bilinear_policy(src, id, x0, y0, border_mode, constant_border_value);
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break;
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case InterpolationPolicy::AREA:
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default:
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ARM_COMPUTE_ERROR("Interpolation not supported");
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}
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}
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}
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}
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return dst;
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}
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template SimpleTensor<uint8_t> warp_affine(const SimpleTensor<uint8_t> &src, SimpleTensor<uint8_t> &valid_mask, const float *matrix, InterpolationPolicy policy, BorderMode border_mode,
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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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