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/*
* 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_NEFASTCORNERS_H
#define ARM_COMPUTE_NEFASTCORNERS_H
#include "arm_compute/core/Types.h"
#include "arm_compute/runtime/Array.h"
#include "arm_compute/runtime/IFunction.h"
#include "arm_compute/runtime/IMemoryManager.h"
#include "arm_compute/runtime/MemoryGroup.h"
#include "arm_compute/runtime/Tensor.h"
#include <cstdint>
#include <memory>
namespace arm_compute
{
class ITensor;
class NENonMaximaSuppression3x3Kernel;
class NEFastCornersKernel;
class NEFillBorderKernel;
class NEFillArrayKernel;
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(std::shared_ptr<IMemoryManager> memory_manager = nullptr);
/** Prevent instances of this class from being copied (As this class contains pointers) */
NEFastCorners(const NEFastCorners &) = delete;
/** Prevent instances of this class from being copied (As this class contains pointers) */
NEFastCorners &operator=(const NEFastCorners &) = delete;
/** Prevent instances of this class from being moved (As this class contains non movable objects) */
NEFastCorners(NEFastCorners &&) = delete;
/** Prevent instances of this class from being moved (As this class contains non movable objects) */
NEFastCorners &operator=(NEFastCorners &&) = delete;
/** Default destructor */
~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:
MemoryGroup _memory_group;
std::unique_ptr<NEFastCornersKernel> _fast_corners_kernel;
std::unique_ptr<NEFillBorderKernel> _border_handler;
std::unique_ptr<NENonMaximaSuppression3x3Kernel> _nonmax_kernel;
std::unique_ptr<NEFillArrayKernel> _fill_kernel;
Image _output;
Image _suppressed;
bool _non_max;
};
}
#endif /*ARM_COMPUTE_NEFASTCORNERS_H */
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