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Diffstat (limited to 'src/core/NEON/kernels/NEWarpKernel.cpp')
| -rw-r--r-- | src/core/NEON/kernels/NEWarpKernel.cpp | 807 |
1 files changed, 0 insertions, 807 deletions
diff --git a/src/core/NEON/kernels/NEWarpKernel.cpp b/src/core/NEON/kernels/NEWarpKernel.cpp deleted file mode 100644 index 1ae076153b..0000000000 --- a/src/core/NEON/kernels/NEWarpKernel.cpp +++ /dev/null @@ -1,807 +0,0 @@ -/* - * Copyright (c) 2016-2020 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 "src/core/NEON/kernels/NEWarpKernel.h" - -#include "arm_compute/core/Coordinates.h" -#include "arm_compute/core/Error.h" -#include "arm_compute/core/Helpers.h" -#include "arm_compute/core/ITensor.h" -#include "arm_compute/core/TensorInfo.h" -#include "arm_compute/core/Validate.h" -#include "arm_compute/core/Window.h" -#include "src/core/AccessWindowStatic.h" -#include "src/core/helpers/AutoConfiguration.h" -#include "src/core/helpers/ScaleHelpers.h" -#include "src/core/helpers/WindowHelpers.h" - -#include <cstddef> - -using namespace arm_compute; - -namespace -{ -inline uint8_t nearest_interpolation(const uint8_t *in_ptr, int x, int y, size_t stride) -{ - return in_ptr[x + y * stride]; -} -} // namespace - -INEWarpKernel::INEWarpKernel() - : _func(nullptr), _input(nullptr), _output(nullptr), _constant_border_value(0), _matrix() -{ -} - -BorderSize INEWarpKernel::border_size() const -{ - return BorderSize(1); -} - -void INEWarpKernel::run(const Window &window, const ThreadInfo &info) -{ - ARM_COMPUTE_UNUSED(info); - ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); - ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INEKernel::window(), window); - ARM_COMPUTE_ERROR_ON(_func == nullptr); - - (this->*_func)(window); -} - -void INEWarpKernel::configure(const ITensor *input, ITensor *output, const std::array<float, 9> &matrix, BorderMode border_mode, uint8_t constant_border_value) -{ - ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8); - ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8); - - _matrix = matrix; - _constant_border_value = constant_border_value; - - switch(border_mode) - { - case BorderMode::UNDEFINED: - _func = &INEWarpKernel::warp_undefined; - break; - case BorderMode::CONSTANT: - _func = &INEWarpKernel::warp_constant; - break; - case BorderMode::REPLICATE: - _func = &INEWarpKernel::warp_replicate; - break; - default: - ARM_COMPUTE_ERROR("Border mode not supported"); - break; - } - - _input = input; - _output = output; - - // Configure kernel window - Window win = calculate_max_window(*output->info(), Steps(1U)); - - const ValidRegion &input_valid_region = input->info()->valid_region(); - - // Reads can occur within the valid region of the input - AccessWindowStatic input_access(input->info(), - input_valid_region.anchor[0] - border_size().left, input_valid_region.anchor[1] - border_size().top, - input_valid_region.anchor[0] + input_valid_region.shape[0] + border_size().right, - input_valid_region.anchor[1] + input_valid_region.shape[1] + border_size().bottom); - AccessWindowHorizontal output_access(output->info(), 0, 1); - - update_window_and_padding(win, input_access, output_access); - - output_access.set_valid_region(win, ValidRegion(Coordinates(), output->info()->tensor_shape())); - - INEKernel::configure(win); -} - -template <InterpolationPolicy interpolation> -void NEWarpAffineKernel<interpolation>::warp_undefined(const Window &window) -{ - // Don't increment in X and Y direction for the input tensor - // A pointer to the start of this plane is needed as base for the precomputed offsets - Window win_in(window); - win_in.set(Window::DimX, Window::Dimension(0, 0, 0)); - win_in.set(Window::DimY, Window::Dimension(0, 0, 0)); - - Iterator in(_input, win_in); - Iterator out(_output, window); - - const int min_x = _input->info()->valid_region().anchor[0]; - const int max_x = min_x + _input->info()->valid_region().shape[0]; - const int min_y = _input->info()->valid_region().anchor[1]; - const int max_y = min_y + _input->info()->valid_region().shape[1]; - const size_t stride = _input->info()->strides_in_bytes()[1]; - - // x0 = M01 * x + M01 * y + M02 - // y0 = M11 * x + M11 * y + M12 - const float M00 = _matrix[0]; - const float M10 = _matrix[1]; - const float M01 = _matrix[0 + 1 * 2]; - const float M11 = _matrix[1 + 1 * 2]; - const float M02 = _matrix[0 + 2 * 2]; - const float M12 = _matrix[1 + 2 * 2]; - - // "M00 * x" and "M10 * x", when x = window.x.start - const float start_x0 = M00 * window.x().start(); - const float start_y0 = M10 * window.x().start(); - - // Current row - int y_cur = window.y().start(); - int z_cur = window.z().start(); - int d3_cur = window[3].start(); - int d4_cur = window[4].start(); - int d5_cur = window[5].start(); - - // const_x0 and const_y0 are the constant parts of x0 and y0 during the row processing - float const_x0 = M01 * y_cur + M02; - float const_y0 = M11 * y_cur + M12; - - // Affine warp coordinates - float x0 = start_x0 + const_x0; - float y0 = start_y0 + const_y0; - - execute_window_loop(window, [&](const Coordinates & id) - { - // Check if we are processing a new row. If so, update the current processed row (y_cur), x0, y0 and z0 - if((y_cur != id.y()) || (z_cur != id.z()) || (d3_cur != id[3]) || (d4_cur != id[4]) || (d5_cur != id[5])) - { - y_cur = id.y(); - z_cur = id.z(); - d3_cur = id[3]; - d4_cur = id[4]; - d5_cur = id[5]; - - const_x0 = M01 * y_cur + M02; - const_y0 = M11 * y_cur + M12; - - x0 = start_x0 + const_x0; - y0 = start_y0 + const_y0; - } - - // Only write to output if x0 and y0 are within the valid region. - // Otherwise the read value would be undefined. - if((min_y <= y0) && (y0 < max_y) && (min_x <= x0) && (x0 < max_x)) - { - switch(interpolation) - { - case InterpolationPolicy::NEAREST_NEIGHBOR: - *out.ptr() = nearest_interpolation(in.ptr(), x0, y0, stride); - break; - case InterpolationPolicy::BILINEAR: - *out.ptr() = scale_helpers::pixel_bilinear_c1(in.ptr(), stride, x0, y0); - break; - default: - ARM_COMPUTE_ERROR("Interpolation not supported"); - } - } - - x0 += M00; - y0 += M10; - }, - in, out); -} - -template <InterpolationPolicy interpolation> -void NEWarpAffineKernel<interpolation>::warp_constant(const Window &window) -{ - // Don't increment in X and Y direction for the input tensor - // A pointer to the start of this plane is needed as base for the precomputed offsets - Window win_in(window); - win_in.set(Window::DimX, Window::Dimension(0, 0, 0)); - win_in.set(Window::DimY, Window::Dimension(0, 0, 0)); - - Iterator in(_input, win_in); - Iterator out(_output, window); - - const int min_x = _input->info()->valid_region().anchor[0]; - const int max_x = min_x + _input->info()->valid_region().shape[0]; - const int min_y = _input->info()->valid_region().anchor[1]; - const int max_y = min_y + _input->info()->valid_region().shape[1]; - const size_t stride = _input->info()->strides_in_bytes()[1]; - - // x0 = M01 * x + M01 * y + M02 - // y0 = M11 * x + M11 * y + M12 - const float M00 = _matrix[0]; - const float M10 = _matrix[1]; - const float M01 = _matrix[0 + 1 * 2]; - const float M11 = _matrix[1 + 1 * 2]; - const float M02 = _matrix[0 + 2 * 2]; - const float M12 = _matrix[1 + 2 * 2]; - - // "M00 * x" and "M10 * x", when x = window.x.start - const float start_x0 = M00 * window.x().start(); - const float start_y0 = M10 * window.x().start(); - - // Current row - int y_cur = window.y().start(); - int z_cur = window.z().start(); - int d3_cur = window[3].start(); - int d4_cur = window[4].start(); - int d5_cur = window[5].start(); - - // const_x0 and const_y0 are the constant parts of x0 and y0 during the row processing - float const_x0 = M01 * y_cur + M02; - float const_y0 = M11 * y_cur + M12; - - // Affine warp coordinates - float x0 = start_x0 + const_x0; - float y0 = start_y0 + const_y0; - - execute_window_loop(window, [&](const Coordinates & id) - { - // Check if we are processing a new row. If so, update the current processed row (y_cur), x0, y0 and z0 - if((y_cur != id.y()) || (z_cur != id.z()) || (d3_cur != id[3]) || (d4_cur != id[4]) || (d5_cur != id[5])) - { - y_cur = id.y(); - z_cur = id.z(); - d3_cur = id[3]; - d4_cur = id[4]; - d5_cur = id[5]; - - const_x0 = M01 * y_cur + M02; - const_y0 = M11 * y_cur + M12; - - x0 = start_x0 + const_x0; - y0 = start_y0 + const_y0; - } - - // Only use input values if x0 and y0 are within the valid region. - // Otherwise write the constant border value. - if((min_y <= y0) && (y0 < max_y) && (min_x <= x0) && (x0 < max_x)) - { - switch(interpolation) - { - case InterpolationPolicy::NEAREST_NEIGHBOR: - *out.ptr() = nearest_interpolation(in.ptr(), x0, y0, stride); - break; - case InterpolationPolicy::BILINEAR: - *out.ptr() = scale_helpers::pixel_bilinear_c1(in.ptr(), stride, x0, y0); - break; - default: - ARM_COMPUTE_ERROR("Interpolation not supported"); - } - } - else - { - switch(interpolation) - { - case InterpolationPolicy::NEAREST_NEIGHBOR: - *out.ptr() = _constant_border_value; - break; - case InterpolationPolicy::BILINEAR: - { - const auto xi = utility::clamp<int>(std::floor(x0), min_x - 1, max_x); - const auto yi = utility::clamp<int>(std::floor(y0), min_y - 1, max_y); - const auto xi_1 = utility::clamp<int>(std::floor(x0 + 1), min_x - 1, max_x); - const auto yi_1 = utility::clamp<int>(std::floor(y0 + 1), min_y - 1, max_y); - - const float dx = x0 - std::floor(x0); - const float dy = y0 - std::floor(y0); - const float dx1 = 1.0f - dx; - const float dy1 = 1.0f - dy; - - const float a00 = *(in.ptr() + xi + yi * stride); - const float a01 = *(in.ptr() + xi_1 + yi * stride); - const float a10 = *(in.ptr() + xi + yi_1 * stride); - const float a11 = *(in.ptr() + xi_1 + yi_1 * stride); - - *out.ptr() = a00 * (dx1 * dy1) + a01 * (dx * dy1) + a10 * (dx1 * dy) + a11 * (dx * dy); - } - break; - default: - ARM_COMPUTE_ERROR("Interpolation not supported"); - } - } - - x0 += M00; - y0 += M10; - }, - in, out); -} - -template <InterpolationPolicy interpolation> -void NEWarpAffineKernel<interpolation>::warp_replicate(const Window &window) -{ - // Don't increment in X and Y direction for the input tensor - // A pointer to the start of this plane is needed as base for the precomputed offsets - Window win_in(window); - win_in.set(Window::DimX, Window::Dimension(0, 0, 0)); - win_in.set(Window::DimY, Window::Dimension(0, 0, 0)); - - Iterator in(_input, win_in); - Iterator out(_output, window); - - const int min_x = _input->info()->valid_region().anchor[0]; - const int max_x = min_x + _input->info()->valid_region().shape[0]; - const int min_y = _input->info()->valid_region().anchor[1]; - const int max_y = min_y + _input->info()->valid_region().shape[1]; - const size_t stride = _input->info()->strides_in_bytes()[1]; - - // Current row - int y_cur = window.y().start(); - int z_cur = window.z().start(); - int d3_cur = window[3].start(); - int d4_cur = window[4].start(); - int d5_cur = window[5].start(); - - const float M00 = _matrix[0]; - const float M10 = _matrix[1]; - const float M01 = _matrix[0 + 1 * 2]; - const float M11 = _matrix[1 + 1 * 2]; - const float M02 = _matrix[0 + 2 * 2]; - const float M12 = _matrix[1 + 2 * 2]; - - // "M00 * x" and "M10 * x", when x = window.x.start - const float start_x0 = M00 * window.x().start(); - const float start_y0 = M10 * window.x().start(); - - // const_x0 and const_y0 are the constant parts of x0 and y0 during the row processing - float const_x0 = M01 * y_cur + M02; - float const_y0 = M11 * y_cur + M12; - - float x0 = start_x0 + const_x0; - float y0 = start_y0 + const_y0; - - execute_window_loop(window, [&](const Coordinates & id) - { - // Check if we are processing a new row. If so, update the current processed row (y_cur), x0, y0 and z0 - if((y_cur != id.y()) || (z_cur != id.z()) || (d3_cur != id[3]) || (d4_cur != id[4]) || (d5_cur != id[5])) - { - y_cur = id.y(); - z_cur = id.z(); - d3_cur = id[3]; - d4_cur = id[4]; - d5_cur = id[5]; - - const_x0 = M01 * y_cur + M02; - const_y0 = M11 * y_cur + M12; - - x0 = start_x0 + const_x0; - y0 = start_y0 + const_y0; - } - - // Only load from (x0, y0) if the point is within the valid region. - // Otherwise load from the edge of the valid region. - if((min_y <= y0) && (y0 < max_y) && (min_x <= x0) && (x0 < max_x)) - { - switch(interpolation) - { - case InterpolationPolicy::NEAREST_NEIGHBOR: - *out.ptr() = nearest_interpolation(in.ptr(), x0, y0, stride); - break; - case InterpolationPolicy::BILINEAR: - *out.ptr() = scale_helpers::pixel_bilinear_c1(in.ptr(), stride, x0, y0); - break; - default: - ARM_COMPUTE_ERROR("Interpolation not supported"); - } - } - else - { - // Clamp coordinates - const auto xi = utility::clamp<int>(std::floor(x0), min_x, max_x - 1); - const auto yi = utility::clamp<int>(std::floor(y0), min_y, max_y - 1); - switch(interpolation) - { - case InterpolationPolicy::NEAREST_NEIGHBOR: - *out.ptr() = *(in.ptr() + xi + yi * stride); - break; - case InterpolationPolicy::BILINEAR: - { - const auto xi_1 = utility::clamp<int>(std::floor(x0 + 1), min_x, max_x - 1); - const auto yi_1 = utility::clamp<int>(std::floor(y0 + 1), min_y, max_y - 1); - - const float dx = x0 - std::floor(x0); - const float dy = y0 - std::floor(y0); - const float dx1 = 1.0f - dx; - const float dy1 = 1.0f - dy; - - const float a00 = *(in.ptr() + xi + yi * stride); - const float a01 = *(in.ptr() + xi_1 + yi * stride); - const float a10 = *(in.ptr() + xi + yi_1 * stride); - const float a11 = *(in.ptr() + xi_1 + yi_1 * stride); - - *out.ptr() = a00 * (dx1 * dy1) + a01 * (dx * dy1) + a10 * (dx1 * dy) + a11 * (dx * dy); - } - break; - default: - ARM_COMPUTE_ERROR("Interpolation not supported"); - } - } - - x0 += M00; - y0 += M10; - }, - in, out); -} - -template <InterpolationPolicy interpolation> -void NEWarpPerspectiveKernel<interpolation>::warp_undefined(const Window &window) -{ - // Don't increment in X and Y direction for the input tensor - // A pointer to the start of this plane is needed as base for the precomputed offsets - Window win_in(window); - win_in.set(Window::DimX, Window::Dimension(0, 0, 0)); - win_in.set(Window::DimY, Window::Dimension(0, 0, 0)); - - Iterator in(_input, win_in); - Iterator out(_output, window); - - const int min_x = _input->info()->valid_region().anchor[0]; - const int max_x = min_x + _input->info()->valid_region().shape[0]; - const int min_y = _input->info()->valid_region().anchor[1]; - const int max_y = min_y + _input->info()->valid_region().shape[1]; - const size_t stride = _input->info()->strides_in_bytes()[1]; - - // x0 = M00 * x + M01 * y + M02 - // y0 = M10 * x + M11 * y + M12 - // z0 = M20 * x + M21 * y + M22 - // xn = x0 / z0 - // yn = y0 / z0 - const float M00 = _matrix[0]; - const float M10 = _matrix[1]; - const float M20 = _matrix[2]; - const float M01 = _matrix[0 + 1 * 3]; - const float M11 = _matrix[1 + 1 * 3]; - const float M21 = _matrix[2 + 1 * 3]; - const float M02 = _matrix[0 + 2 * 3]; - const float M12 = _matrix[1 + 2 * 3]; - const float M22 = _matrix[2 + 2 * 3]; - - // "M00 * x", "M10 * x" and "M20 * x", when x = window.x.start - const float start_x0 = M00 * window.x().start(); - const float start_y0 = M10 * window.x().start(); - const float start_z0 = M20 * window.x().start(); - - // Current row - int y_cur = window.y().start(); - int z_cur = window.z().start(); - int d3_cur = window[3].start(); - int d4_cur = window[4].start(); - int d5_cur = window[5].start(); - - // const_x0, const_y0 and const_z0 are the constant parts of x0, y0 and z0 during the row processing - float const_x0 = M01 * y_cur + M02; - float const_y0 = M11 * y_cur + M12; - float const_z0 = M21 * y_cur + M22; - - // Perspective warp coordinates - float x0 = start_x0 + const_x0; - float y0 = start_y0 + const_y0; - float z0 = start_z0 + const_z0; - - execute_window_loop(window, [&](const Coordinates & id) - { - // Check if we are processing a new row. If so, update the current processed row (y_cur), x0, y0 and z0 - if((y_cur != id.y()) || (z_cur != id.z()) || (d3_cur != id[3]) || (d4_cur != id[4]) || (d5_cur != id[5])) - { - y_cur = id.y(); - z_cur = id.z(); - d3_cur = id[3]; - d4_cur = id[4]; - d5_cur = id[5]; - - const_x0 = M01 * y_cur + M02; - const_y0 = M11 * y_cur + M12; - const_z0 = M21 * y_cur + M22; - - x0 = start_x0 + const_x0; - y0 = start_y0 + const_y0; - z0 = start_z0 + const_z0; - } - - const float xn = x0 / z0; - const float yn = y0 / z0; - - // Only write to output if xn and yn are within the valid region. - // Otherwise the read value would be undefined. - if((min_y <= yn) && (yn < max_y) && (min_x <= xn) && (xn < max_x)) - { - switch(interpolation) - { - case InterpolationPolicy::NEAREST_NEIGHBOR: - *out.ptr() = nearest_interpolation(in.ptr(), xn, yn, stride); - break; - case InterpolationPolicy::BILINEAR: - *out.ptr() = scale_helpers::pixel_bilinear_c1(in.ptr(), stride, xn, yn); - break; - default: - ARM_COMPUTE_ERROR("Interpolation not supported"); - } - } - - x0 += M00; - y0 += M10; - z0 += M20; - }, - in, out); -} - -template <InterpolationPolicy interpolation> -void NEWarpPerspectiveKernel<interpolation>::warp_constant(const Window &window) -{ - // Don't increment in X and Y direction for the input tensor - // A pointer to the start of this plane is needed as base for the precomputed offsets - Window win_in(window); - win_in.set(Window::DimX, Window::Dimension(0, 0, 0)); - win_in.set(Window::DimY, Window::Dimension(0, 0, 0)); - - Iterator in(_input, win_in); - Iterator out(_output, window); - - const int min_x = _input->info()->valid_region().anchor[0]; - const int max_x = min_x + _input->info()->valid_region().shape[0]; - const int min_y = _input->info()->valid_region().anchor[1]; - const int max_y = min_y + _input->info()->valid_region().shape[1]; - const size_t stride = _input->info()->strides_in_bytes()[1]; - - // x0 = M00 * x + M01 * y + M02 - // y0 = M10 * x + M11 * y + M12 - // z0 = M20 * x + M21 * y + M22 - // xn = x0 / z0 - // yn = y0 / z0 - const float M00 = _matrix[0]; - const float M10 = _matrix[1]; - const float M20 = _matrix[2]; - const float M01 = _matrix[0 + 1 * 3]; - const float M11 = _matrix[1 + 1 * 3]; - const float M21 = _matrix[2 + 1 * 3]; - const float M02 = _matrix[0 + 2 * 3]; - const float M12 = _matrix[1 + 2 * 3]; - const float M22 = _matrix[2 + 2 * 3]; - - // "M00 * x", "M10 * x" and "M20 * x", when x = window.x.start - const float start_x0 = M00 * window.x().start(); - const float start_y0 = M10 * window.x().start(); - const float start_z0 = M20 * window.x().start(); - - // Current row - int y_cur = window.y().start(); - int z_cur = window.z().start(); - int d3_cur = window[3].start(); - int d4_cur = window[4].start(); - int d5_cur = window[5].start(); - - // const_x0, const_y0 and const_z0 are the constant parts of x0, y0 and z0 during the row processing - float const_x0 = M01 * y_cur + M02; - float const_y0 = M11 * y_cur + M12; - float const_z0 = M21 * y_cur + M22; - - // Perspective warp coordinates - float x0 = start_x0 + const_x0; - float y0 = start_y0 + const_y0; - float z0 = start_z0 + const_z0; - - execute_window_loop(window, [&](const Coordinates & id) - { - // Check if we are processing a new row. If so, update the current processed row (y_cur), x0, y0 and z0 - if((y_cur != id.y()) || (z_cur != id.z()) || (d3_cur != id[3]) || (d4_cur != id[4]) || (d5_cur != id[5])) - { - y_cur = id.y(); - z_cur = id.z(); - d3_cur = id[3]; - d4_cur = id[4]; - d5_cur = id[5]; - - const_x0 = M01 * y_cur + M02; - const_y0 = M11 * y_cur + M12; - const_z0 = M21 * y_cur + M22; - - x0 = start_x0 + const_x0; - y0 = start_y0 + const_y0; - z0 = start_z0 + const_z0; - } - - const float xn = x0 / z0; - const float yn = y0 / z0; - - // Only use input values if xn and yn are within the valid region. - if((min_y <= yn) && (yn < max_y) && (min_x <= xn) && (xn < max_x)) - { - switch(interpolation) - { - case InterpolationPolicy::NEAREST_NEIGHBOR: - *out.ptr() = nearest_interpolation(in.ptr(), xn, yn, stride); - break; - case InterpolationPolicy::BILINEAR: - *out.ptr() = scale_helpers::pixel_bilinear_c1(in.ptr(), stride, xn, yn); - break; - default: - ARM_COMPUTE_ERROR("Interpolation not supported"); - } - } - else - { - switch(interpolation) - { - case InterpolationPolicy::NEAREST_NEIGHBOR: - *out.ptr() = _constant_border_value; - break; - case InterpolationPolicy::BILINEAR: - { - const auto xi = utility::clamp<int>(std::floor(xn), min_x - 1, max_x); - const auto yi = utility::clamp<int>(std::floor(yn), min_y - 1, max_y); - const auto xi_1 = utility::clamp<int>(std::floor(xn + 1), min_x - 1, max_x); - const auto yi_1 = utility::clamp<int>(std::floor(yn + 1), min_y - 1, max_y); - - const float dx = xn - std::floor(xn); - const float dy = yn - std::floor(yn); - const float dx1 = 1.0f - dx; - const float dy1 = 1.0f - dy; - - const float a00 = *(in.ptr() + xi + yi * stride); - const float a01 = *(in.ptr() + xi_1 + yi * stride); - const float a10 = *(in.ptr() + xi + yi_1 * stride); - const float a11 = *(in.ptr() + xi_1 + yi_1 * stride); - - *out.ptr() = a00 * (dx1 * dy1) + a01 * (dx * dy1) + a10 * (dx1 * dy) + a11 * (dx * dy); - } - break; - default: - ARM_COMPUTE_ERROR("Interpolation not supported"); - } - } - - x0 += M00; - y0 += M10; - z0 += M20; - }, - in, out); -} - -template <InterpolationPolicy interpolation> -void NEWarpPerspectiveKernel<interpolation>::warp_replicate(const Window &window) -{ - // Don't increment in X and Y direction for the input tensor - // A pointer to the start of this plane is needed as base for the precomputed offsets - Window win_in(window); - win_in.set(Window::DimX, Window::Dimension(0, 0, 0)); - win_in.set(Window::DimY, Window::Dimension(0, 0, 0)); - - Iterator in(_input, win_in); - Iterator out(_output, window); - - const int min_x = _input->info()->valid_region().anchor[0]; - const int max_x = min_x + _input->info()->valid_region().shape[0]; - const int min_y = _input->info()->valid_region().anchor[1]; - const int max_y = min_y + _input->info()->valid_region().shape[1]; - const size_t stride = _input->info()->strides_in_bytes()[1]; - - // Current row - int y_cur = window.y().start(); - int z_cur = window.z().start(); - int d3_cur = window[3].start(); - int d4_cur = window[4].start(); - int d5_cur = window[5].start(); - - // x0 = M00 * x + M01 * y + M02 - // y0 = M10 * x + M11 * y + M12 - // z0 = M20 * x + M21 * y + M22 - // xn = x0 / z0 - // yn = y0 / z0 - const float M00 = _matrix[0]; - const float M10 = _matrix[1]; - const float M20 = _matrix[2]; - const float M01 = _matrix[0 + 1 * 3]; - const float M11 = _matrix[1 + 1 * 3]; - const float M21 = _matrix[2 + 1 * 3]; - const float M02 = _matrix[0 + 2 * 3]; - const float M12 = _matrix[1 + 2 * 3]; - const float M22 = _matrix[2 + 2 * 3]; - - // "M00 * x", "M10 * x" and "M20 * x", when x = window.x.start - const float start_x0 = M00 * window.x().start(); - const float start_y0 = M10 * window.x().start(); - const float start_z0 = M20 * window.x().start(); - - // const_x0, const_y0 and const_z0 are the constant parts of x0, y0 and z0 during the row processing - float const_x0 = M01 * y_cur + M02; - float const_y0 = M11 * y_cur + M12; - float const_z0 = M21 * y_cur + M22; - - // Perspective warp coordinates - float x0 = start_x0 + const_x0; - float y0 = start_y0 + const_y0; - float z0 = start_z0 + const_z0; - - execute_window_loop(window, [&](const Coordinates & id) - { - // Check if we are processing a new row. If so, update the current processed row (y_cur), x0, y0 and z0 - if((y_cur != id.y()) || (z_cur != id.z()) || (d3_cur != id[3]) || (d4_cur != id[4]) || (d5_cur != id[5])) - { - y_cur = id.y(); - z_cur = id.z(); - d3_cur = id[3]; - d4_cur = id[4]; - d5_cur = id[5]; - - const_x0 = M01 * y_cur + M02; - const_y0 = M11 * y_cur + M12; - const_z0 = M21 * y_cur + M22; - - x0 = start_x0 + const_x0; - y0 = start_y0 + const_y0; - z0 = start_z0 + const_z0; - } - - const float xn = x0 / z0; - const float yn = y0 / z0; - - // Only load from (x0, y0) if the point is within the valid region. - if((min_y <= yn) && (yn < max_y) && (min_x <= xn) && (xn < max_x)) - { - switch(interpolation) - { - case InterpolationPolicy::NEAREST_NEIGHBOR: - *out.ptr() = nearest_interpolation(in.ptr(), xn, yn, stride); - break; - case InterpolationPolicy::BILINEAR: - *out.ptr() = scale_helpers::pixel_bilinear_c1(in.ptr(), stride, xn, yn); - break; - default: - ARM_COMPUTE_ERROR("Interpolation not supported"); - } - } - else - { - // Clamp coordinates - const auto xi = utility::clamp<int>(std::floor(xn), min_x, max_x - 1); - const auto yi = utility::clamp<int>(std::floor(yn), min_y, max_y - 1); - switch(interpolation) - { - case InterpolationPolicy::NEAREST_NEIGHBOR: - *out.ptr() = *(in.ptr() + xi + yi * stride); - break; - case InterpolationPolicy::BILINEAR: - { - const auto xi_1 = utility::clamp<int>(std::floor(xn + 1), min_x, max_x - 1); - const auto yi_1 = utility::clamp<int>(std::floor(yn + 1), min_y, max_y - 1); - - const float dx = xn - std::floor(xn); - const float dy = yn - std::floor(yn); - const float dx1 = 1.0f - dx; - const float dy1 = 1.0f - dy; - - const float a00 = *(in.ptr() + xi + yi * stride); - const float a01 = *(in.ptr() + xi_1 + yi * stride); - const float a10 = *(in.ptr() + xi + yi_1 * stride); - const float a11 = *(in.ptr() + xi_1 + yi_1 * stride); - - *out.ptr() = a00 * (dx1 * dy1) + a01 * (dx * dy1) + a10 * (dx1 * dy) + a11 * (dx * dy); - } - break; - default: - ARM_COMPUTE_ERROR("Interpolation not supported"); - } - } - - x0 += M00; - y0 += M10; - z0 += M20; - }, - in, out); -} - -template class arm_compute::NEWarpAffineKernel<InterpolationPolicy::NEAREST_NEIGHBOR>; -template class arm_compute::NEWarpAffineKernel<InterpolationPolicy::BILINEAR>; -template class arm_compute::NEWarpPerspectiveKernel<InterpolationPolicy::NEAREST_NEIGHBOR>; -template class arm_compute::NEWarpPerspectiveKernel<InterpolationPolicy::BILINEAR>; |