| /* |
| * 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_NEFASTCORNERS_H__ |
| #define __ARM_COMPUTE_NEFASTCORNERS_H__ |
| |
| #include "arm_compute/core/NEON/kernels/NEFastCornersKernel.h" |
| #include "arm_compute/core/NEON/kernels/NEFillArrayKernel.h" |
| #include "arm_compute/core/NEON/kernels/NEFillBorderKernel.h" |
| #include "arm_compute/core/NEON/kernels/NENonMaximaSuppression3x3Kernel.h" |
| #include "arm_compute/core/Types.h" |
| #include "arm_compute/runtime/Array.h" |
| #include "arm_compute/runtime/IFunction.h" |
| #include "arm_compute/runtime/Tensor.h" |
| |
| #include <cstdint> |
| |
| namespace arm_compute |
| { |
| class ITensor; |
| using IImage = ITensor; |
| |
| /** Basic function to execute fast corners. This function call the following NEON kernels: |
| * |
| * -# @ref NEFastCornersKernel |
| * -# @ref NENonMaximaSuppression3x3Kernel (executed if nonmax_suppression == true) |
| * -# @ref NEFillArrayKernel |
| * |
| */ |
| class NEFastCorners : public IFunction |
| { |
| public: |
| /** Constructor */ |
| NEFastCorners(); |
| /** Initialize the function's source, destination, conv and border_mode. |
| * |
| * @param[in, out] input Source image. Data type supported: U8. (Written to only for @p border_mode != UNDEFINED) |
| * @param[in] threshold Threshold on difference between intensity of the central pixel and pixels on Bresenham's circle of radius 3. |
| * @param[in] nonmax_suppression If true, non-maximum suppression is applied to detected corners before being placed in the array. |
| * @param[out] corners Array of keypoints to store the results. |
| * @param[in] border_mode Strategy to use for borders. |
| * @param[in] constant_border_value (Optional) Constant value to use for borders if border_mode is set to CONSTANT. |
| */ |
| void configure(IImage *input, float threshold, bool nonmax_suppression, KeyPointArray *corners, |
| BorderMode border_mode, uint8_t constant_border_value = 0); |
| |
| // Inherited methods overridden: |
| void run() override; |
| |
| private: |
| NEFastCornersKernel _fast_corners_kernel; |
| NEFillBorderKernel _border_handler; |
| NENonMaximaSuppression3x3Kernel _nonmax_kernel; |
| NEFillArrayKernel _fill_kernel; |
| Image _output; |
| Image _suppressed; |
| bool _non_max; |
| }; |
| } |
| #endif /*__ARM_COMPUTE_NEFASTCORNERS_H__ */ |