| /* |
| * 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. |
| */ |
| #ifndef ARM_COMPUTE_CLHARRISCORNERSKERNEL_H |
| #define ARM_COMPUTE_CLHARRISCORNERSKERNEL_H |
| |
| #include "src/core/CL/ICLKernel.h" |
| |
| #include <cstdint> |
| |
| namespace arm_compute |
| { |
| class ICLTensor; |
| using ICLImage = ICLTensor; |
| |
| /** Interface for the harris score kernel. |
| * |
| * @note The implementation supports 3, 5, and 7 for the block_size. |
| */ |
| class CLHarrisScoreKernel : public ICLKernel |
| { |
| public: |
| /** Default constructor */ |
| CLHarrisScoreKernel(); |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| CLHarrisScoreKernel(const CLHarrisScoreKernel &) = delete; |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| CLHarrisScoreKernel &operator=(const CLHarrisScoreKernel &) = delete; |
| /** Allow instances of this class to be moved */ |
| CLHarrisScoreKernel(CLHarrisScoreKernel &&) = default; |
| /** Allow instances of this class to be moved */ |
| CLHarrisScoreKernel &operator=(CLHarrisScoreKernel &&) = default; |
| /** Default destructor */ |
| ~CLHarrisScoreKernel() = default; |
| |
| /** Setup the kernel parameters |
| * |
| * @param[in] input1 Source image (gradient X). Data types supported S16, S32. (Must be the same as input2) |
| * @param[in] input2 Source image (gradient Y). Data types supported S16, S32. (Must be the same as input1) |
| * @param[out] output Destination image (harris score). Data types supported F32 |
| * @param[in] block_size The block window size used to compute the Harris Corner score. Supports: 3, 5 and 7 |
| * @param[in] norm_factor Normalization factor to use accordingly with the gradient size (Must be different from 0) |
| * @param[in] strength_thresh Minimum threshold with which to eliminate Harris Corner scores (computed using the normalized Sobel kernel). |
| * @param[in] sensitivity Sensitivity threshold k from the Harris-Stephens equation. |
| * @param[in] border_undefined True if the border mode is undefined. False if it's replicate or constant. |
| */ |
| void configure(const ICLImage *input1, const ICLImage *input2, ICLImage *output, |
| int32_t block_size, float norm_factor, float strength_thresh, float sensitivity, |
| bool border_undefined); |
| /** Setup the kernel parameters |
| * |
| * @param[in] compile_context The compile context to be used. |
| * @param[in] input1 Source image (gradient X). Data types supported S16, S32. (Must be the same as input2) |
| * @param[in] input2 Source image (gradient Y). Data types supported S16, S32. (Must be the same as input1) |
| * @param[out] output Destination image (harris score). Data types supported F32 |
| * @param[in] block_size The block window size used to compute the Harris Corner score. Supports: 3, 5 and 7 |
| * @param[in] norm_factor Normalization factor to use accordingly with the gradient size (Must be different from 0) |
| * @param[in] strength_thresh Minimum threshold with which to eliminate Harris Corner scores (computed using the normalized Sobel kernel). |
| * @param[in] sensitivity Sensitivity threshold k from the Harris-Stephens equation. |
| * @param[in] border_undefined True if the border mode is undefined. False if it's replicate or constant. |
| */ |
| void configure(const CLCompileContext &compile_context, const ICLImage *input1, const ICLImage *input2, ICLImage *output, |
| int32_t block_size, float norm_factor, float strength_thresh, float sensitivity, |
| bool border_undefined); |
| |
| // Inherited methods overridden: |
| void run(const Window &window, cl::CommandQueue &queue) override; |
| BorderSize border_size() const override; |
| |
| protected: |
| const ICLImage *_input1; /**< Source image - Gx component */ |
| const ICLImage *_input2; /**< Source image - Gy component */ |
| ICLImage *_output; /**< Source image - Harris score */ |
| float _sensitivity; /**< Sensitivity value */ |
| float _strength_thresh; /**< Threshold value */ |
| float _norm_factor; /**< Normalization factor */ |
| BorderSize _border_size; /**< Border size */ |
| }; |
| } // namespace arm_compute |
| #endif /* ARM_COMPUTE_CLHARRISCORNERSKERNEL_H */ |