1 /* 2 * Copyright (c) 2016-2020 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_NEFASTCORNERSKERNEL_H 25 #define ARM_COMPUTE_NEFASTCORNERSKERNEL_H 26 27 #include "arm_compute/core/Types.h" 28 #include "src/core/NEON/INEKernel.h" 29 30 #include <cstdint> 31 32 namespace arm_compute 33 { 34 class ITensor; 35 using IImage = ITensor; 36 37 /** NEON kernel to perform fast corners */ 38 class NEFastCornersKernel : public INEKernel 39 { 40 public: name()41 const char *name() const override 42 { 43 return "NEFastCornersKernel"; 44 } 45 /** Constructor */ 46 NEFastCornersKernel(); 47 /** Prevent instances of this class from being copied (As this class contains pointers) */ 48 NEFastCornersKernel(const NEFastCornersKernel &) = delete; 49 /** Prevent instances of this class from being copied (As this class contains pointers) */ 50 NEFastCornersKernel &operator=(const NEFastCornersKernel &) = delete; 51 /** Allow instances of this class to be moved */ 52 NEFastCornersKernel(NEFastCornersKernel &&) = default; 53 /** Allow instances of this class to be moved */ 54 NEFastCornersKernel &operator=(NEFastCornersKernel &&) = default; 55 /** Default destructor */ 56 ~NEFastCornersKernel() = default; 57 /** Initialise the kernel. 58 * 59 * @param[in] input Source image. Data type supported: U8. 60 * @param[out] output Output image. Data type supported: U8. 61 * @param[in] threshold Threshold on difference between intensity of the central pixel and pixels on Bresenham's circle of radius 3. 62 * @param[in] non_max_suppression True if non-maxima suppresion is applied, false otherwise. 63 * @param[in] border_undefined True if the border mode is undefined. False if it's replicate or constant. 64 */ 65 void configure(const IImage *input, IImage *output, uint8_t threshold, bool non_max_suppression, bool border_undefined); 66 67 // Inherited methods overridden: 68 void run(const Window &window, const ThreadInfo &info) override; 69 BorderSize border_size() const override; 70 71 private: 72 const IImage *_input; /**< source image */ 73 IImage *_output; /**< inermediate results */ 74 uint8_t _threshold; /**< threshold on difference between intensity */ 75 bool _non_max_suppression; /** true if non-maxima suppression is applied in the next stage */ 76 }; 77 } // namespace arm_compute 78 #endif /* ARM_COMPUTE_NEFASTCORNERSKERNEL_H */ 79