| /* |
| * Copyright (c) 2016, 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. |
| */ |
| #ifndef __ARM_COMPUTE_NELAPLACIANPYRAMID_H__ |
| #define __ARM_COMPUTE_NELAPLACIANPYRAMID_H__ |
| |
| #include "arm_compute/core/Types.h" |
| #include "arm_compute/runtime/IFunction.h" |
| #include "arm_compute/runtime/NEON/functions/NEArithmeticSubtraction.h" |
| #include "arm_compute/runtime/NEON/functions/NEDepthConvert.h" |
| #include "arm_compute/runtime/NEON/functions/NEGaussian5x5.h" |
| #include "arm_compute/runtime/NEON/functions/NEGaussianPyramid.h" |
| #include "arm_compute/runtime/Pyramid.h" |
| |
| #include <cstddef> |
| #include <cstdint> |
| #include <memory> |
| |
| namespace arm_compute |
| { |
| class ITensor; |
| |
| /** Basic function to execute laplacian pyramid. This function calls the following NEON kernels and functions: |
| * |
| * -# @ref NEGaussianPyramidHalf |
| * -# @ref NEGaussian5x5 |
| * -# @ref NEArithmeticSubtraction |
| * |
| * First a Gaussian pyramid is created. Then, for each level i, the corresponding tensor I(i) is blurred with the Gaussian 5x5 filter, and then |
| * difference between the two tensors is the corresponding level L(i) of the Laplacian pyramid. |
| * L(i) = I(i) - Gaussian5x5(I(i)) |
| * Level 0 has always the same first two dimensions as the input tensor. |
| */ |
| class NELaplacianPyramid : public IFunction |
| { |
| public: |
| /** Constructor */ |
| NELaplacianPyramid(); |
| /** Initialise the function's source, destinations and border mode. |
| * |
| * @param[in] input Source tensor. Data type supported: U8. |
| * @param[out] pyramid Destination pyramid tensors, Data type supported at each level: S16. |
| * @param[out] output The lowest resolution tensor necessary to reconstruct the input tensor from the pyramid. Data type supported: S16. |
| * The first two dimensions of this tensor must match the first two dimensions of the tensor in the last level of the pyramid, that is: |
| * out.width = in.width() / pow(2,pyramid_levels-1) and out.height = in.height() / pow(2,pyramid_levels-1) |
| * @param[in] border_mode Border mode to use. |
| * @param[in] constant_border_value (Optional) Constant value to use for borders if border_mode is set to CONSTANT. |
| * |
| */ |
| void configure(const ITensor *input, IPyramid *pyramid, ITensor *output, BorderMode border_mode, uint8_t constant_border_value); |
| |
| // Inherited methods overridden: |
| void run() override; |
| |
| private: |
| size_t _num_levels; |
| NEGaussianPyramidHalf _gaussian_pyr_function; |
| std::unique_ptr<NEGaussian5x5[]> _convf; |
| std::unique_ptr<NEArithmeticSubtraction[]> _subf; |
| Pyramid _gauss_pyr; |
| Pyramid _conv_pyr; |
| NEDepthConvert _depth_function; |
| }; |
| } |
| #endif /*__ARM_COMPUTE_NELAPLACIANPYRAMID_H__ */ |