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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_CLFASTCORNERSKERNEL_H
#define ARM_COMPUTE_CLFASTCORNERSKERNEL_H
#include "arm_compute/core/CL/ICLArray.h"
#include "arm_compute/core/CL/ICLKernel.h"
#include "arm_compute/core/Types.h"
#include <cstdint>
namespace cl
{
class Buffer;
}
namespace arm_compute
{
class ICLTensor;
using ICLImage = ICLTensor;
/** CL kernel to perform fast corners */
class CLFastCornersKernel : public ICLKernel
{
public:
/** Default constructor */
CLFastCornersKernel();
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLFastCornersKernel(const CLFastCornersKernel &) = delete;
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLFastCornersKernel &operator=(const CLFastCornersKernel &) = delete;
/** Allow instances of this class to be moved */
CLFastCornersKernel(CLFastCornersKernel &&) = default;
/** Allow instances of this class to be moved */
CLFastCornersKernel &operator=(CLFastCornersKernel &&) = default;
/** Default destructor */
~CLFastCornersKernel() = default;
/** Initialise the kernel.
*
* @param[in] input Source image. Data types supported: U8.
* @param[out] output Output image. Data types supported: U8.
* @param[in] threshold Threshold on difference between intensity of the central pixel and pixels on Bresenham's circle of radius 3.
* @param[in] non_max_suppression True if non-maxima suppresion is applied, false otherwise.
* @param[in] border_mode Strategy to use for borders.
*/
void configure(const ICLImage *input, ICLImage *output, float threshold, bool non_max_suppression, BorderMode border_mode);
/** Initialise the kernel.
*
* @param[in] compile_context The compile context to be used.
* @param[in] input Source image. Data types supported: U8.
* @param[out] output Output image. Data types supported: U8.
* @param[in] threshold Threshold on difference between intensity of the central pixel and pixels on Bresenham's circle of radius 3.
* @param[in] non_max_suppression True if non-maxima suppresion is applied, false otherwise.
* @param[in] border_mode Strategy to use for borders.
*/
void configure(const CLCompileContext &compile_context, const ICLImage *input, ICLImage *output, float threshold, bool non_max_suppression, BorderMode border_mode);
// Inherited methods overridden
void run(const Window &window, cl::CommandQueue &queue) override;
BorderSize border_size() const override;
private:
const ICLImage *_input;
ICLImage *_output;
};
/** CL kernel to copy keypoints information to ICLKeyPointArray and counts the number of key points */
class CLCopyToArrayKernel : public ICLKernel
{
public:
/** Default constructor */
CLCopyToArrayKernel();
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLCopyToArrayKernel(const CLCopyToArrayKernel &) = delete;
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLCopyToArrayKernel &operator=(const CLCopyToArrayKernel &) = delete;
/** Allow instances of this class to be moved */
CLCopyToArrayKernel(CLCopyToArrayKernel &&) = default;
/** Allow instances of this class to be moved */
CLCopyToArrayKernel &operator=(CLCopyToArrayKernel &&) = default;
/** Default destructor */
~CLCopyToArrayKernel() = default;
/** Initialise the kernel.
*
* @param[in] input Source image. Data types supported: U8.
* @param[in] update_number Flag to indicate whether we need to update the number of corners
* @param[out] corners Array of keypoints to store the results.
* @param[out] num_buffers Number of keypoints to store the results.
*/
void configure(const ICLImage *input, bool update_number, ICLKeyPointArray *corners, cl::Buffer *num_buffers);
/** Initialise the kernel.
*
* @param[in] compile_context The compile context to be used.
* @param[in] input Source image. Data types supported: U8.
* @param[in] update_number Flag to indicate whether we need to update the number of corners
* @param[out] corners Array of keypoints to store the results.
* @param[out] num_buffers Number of keypoints to store the results.
*/
void configure(const CLCompileContext &compile_context, const ICLImage *input, bool update_number, ICLKeyPointArray *corners, cl::Buffer *num_buffers);
// Inherited methods overridden:
void run(const Window &window, cl::CommandQueue &queue) override;
private:
const ICLImage *_input; /**< source image */
ICLKeyPointArray *_corners; /**< destination array */
cl::Buffer *_num_buffer; /**< CL memory to record number of key points in the array */
};
} // namespace arm_compute
#endif /* ARM_COMPUTE_CLFASTCORNERSKERNEL_H */
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