Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016, 2017 ARM Limited. |
| 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all |
| 14 | * copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | #ifndef __ARM_COMPUTE_CLHARRISCORNERSKERNEL_H__ |
| 25 | #define __ARM_COMPUTE_CLHARRISCORNERSKERNEL_H__ |
| 26 | |
| 27 | #include "arm_compute/core/CL/ICLKernel.h" |
| 28 | |
| 29 | #include <cstdint> |
| 30 | |
| 31 | namespace arm_compute |
| 32 | { |
| 33 | class ICLTensor; |
| 34 | using ICLImage = ICLTensor; |
| 35 | |
| 36 | /** Interface for the harris score kernel. |
| 37 | * |
| 38 | * @note The implementation supports 3, 5, and 7 for the block_size. |
| 39 | */ |
| 40 | class CLHarrisScoreKernel : public ICLKernel |
| 41 | { |
| 42 | public: |
| 43 | /** Default constructor */ |
| 44 | CLHarrisScoreKernel(); |
| 45 | /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| 46 | CLHarrisScoreKernel(const CLHarrisScoreKernel &) = delete; |
| 47 | /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| 48 | CLHarrisScoreKernel &operator=(const CLHarrisScoreKernel &) = delete; |
| 49 | /** Allow instances of this class to be moved */ |
| 50 | CLHarrisScoreKernel(CLHarrisScoreKernel &&) = default; |
| 51 | /** Allow instances of this class to be moved */ |
| 52 | CLHarrisScoreKernel &operator=(CLHarrisScoreKernel &&) = default; |
| 53 | /** Default destructor */ |
| 54 | ~CLHarrisScoreKernel() = default; |
| 55 | |
| 56 | /** Setup the kernel parameters |
| 57 | * |
| 58 | * @param[in] input1 Source image (gradient X). Data types supported S16, S32. (Must be the same as input2) |
| 59 | * @param[in] input2 Source image (gradient Y). Data types supported S16, S32. (Must be the same as input1) |
| 60 | * @param[out] output Destination image (harris score). Data types supported F32 |
| 61 | * @param[in] block_size The block window size used to compute the Harris Corner score. Supports: 3, 5 and 7 |
| 62 | * @param[in] norm_factor Normalization factor to use accordingly with the gradient size (Must be different from 0) |
| 63 | * @param[in] strength_thresh Minimum threshold with which to eliminate Harris Corner scores (computed using the normalized Sobel kernel). |
| 64 | * @param[in] sensitivity Sensitivity threshold k from the Harris-Stephens equation. |
| 65 | * @param[in] border_undefined True if the border mode is undefined. False if it's replicate or constant. |
| 66 | */ |
| 67 | void configure(const ICLImage *input1, const ICLImage *input2, ICLImage *output, |
| 68 | int32_t block_size, float norm_factor, float strength_thresh, float sensitivity, |
| 69 | bool border_undefined); |
| 70 | |
| 71 | // Inherited methods overridden: |
| 72 | void run(const Window &window, cl::CommandQueue &queue) override; |
| 73 | BorderSize border_size() const override; |
| 74 | |
| 75 | protected: |
| 76 | const ICLImage *_input1; /**< Source image - Gx component */ |
| 77 | const ICLImage *_input2; /**< Source image - Gy component */ |
| 78 | ICLImage *_output; /**< Source image - Harris score */ |
| 79 | float _sensitivity; /**< Sensitivity value */ |
| 80 | float _strength_thresh; /**< Threshold value */ |
| 81 | float _norm_factor; /**< Normalization factor */ |
| 82 | BorderSize _border_size; /**< Border size */ |
| 83 | }; |
Gian Marco Iodice | f670a0a | 2017-09-18 12:20:45 +0100 | [diff] [blame] | 84 | } // namespace arm_compute |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 85 | #endif /* __ARM_COMPUTE_CLHARRISCORNERSKERNEL_H__ */ |