| /* |
| * 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_NECANNYEDGEKERNEL_H__ |
| #define __ARM_COMPUTE_NECANNYEDGEKERNEL_H__ |
| |
| #include "arm_compute/core/NEON/INEKernel.h" |
| |
| #include <cstdint> |
| |
| namespace arm_compute |
| { |
| class ITensor; |
| |
| /** Computes magnitude and quantised phase from inputs gradients. */ |
| class NEGradientKernel : public INEKernel |
| { |
| public: |
| /** Default constructor */ |
| NEGradientKernel(); |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| NEGradientKernel(const NEGradientKernel &) = delete; |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| NEGradientKernel &operator=(const NEGradientKernel &) = delete; |
| /** Allow instances of this class to be moved */ |
| NEGradientKernel(NEGradientKernel &&) = default; |
| /** Allow instances of this class to be moved */ |
| NEGradientKernel &operator=(NEGradientKernel &&) = default; |
| /** Default destructor */ |
| virtual ~NEGradientKernel() = default; |
| |
| /** Initialise the kernel's sources, destinations and border mode. |
| * |
| * @note gx, gy and magnitude must all be the same size (either 16 or 32) |
| * |
| * @param[in] gx Source tensor - Gx component. Data type supported: S16/S32. |
| * @param[in] gy Source tensor - Gy component. Data type supported: same as @p gx. |
| * @param[out] magnitude Destination tensor - Magnitude. Data type supported: U16 (if the data type of @p gx is S16) / U32 (if the data type of @p gx is S32). |
| * @param[out] phase Destination tensor - Quantized phase. Data type supported: U8. |
| * @param[in] norm_type Normalization type. If 1, L1-Norm otherwise L2-Norm |
| */ |
| virtual void configure(const ITensor *gx, const ITensor *gy, ITensor *magnitude, ITensor *phase, int32_t norm_type); |
| |
| // Inherited methods overridden: |
| void run(const Window &window, const ThreadInfo &info) override; |
| |
| protected: |
| /** Common signature for all the specialised gradient functions |
| * |
| * @param[in] gx_ptr Pointer to the first input tensor. |
| * @param[in] gy_ptr Pointer to the second input tensor. |
| * @param[out] magnitude_ptr Pointer to the first output tensor |
| * @param[out] phase_ptr Pointer to the second output tensor |
| */ |
| using GradientFunction = void(const void *__restrict gx_ptr, const void *__restrict gy_ptr, void *__restrict magnitude_ptr, void *__restrict phase_ptr); |
| |
| GradientFunction *_func; /**< Gradient function to use for the particular tensor types passed to configure() */ |
| const ITensor *_gx; /**< Source tensor - Gx component */ |
| const ITensor *_gy; /**< Source tensor - Gy component */ |
| ITensor *_magnitude; /**< Destination tensor - Magnitude */ |
| ITensor *_phase; /**< Destination tensor - Quantized phase */ |
| }; |
| |
| #ifdef __ARM_FEATURE_FP16_VECTOR_ARITHMETIC |
| /** NEON kernel to perform Gradient computation |
| */ |
| class NEGradientFP16Kernel : public NEGradientKernel |
| { |
| public: |
| // Inherited methods overriden: |
| void configure(const ITensor *gx, const ITensor *gy, ITensor *magnitude, ITensor *phase, int32_t norm_type) override; |
| }; |
| #else /* __ARM_FEATURE_FP16_VECTOR_ARITHMETIC */ |
| using NEGradientFP16Kernel = NEGradientKernel; |
| #endif /* __ARM_FEATURE_FP16_VECTOR_ARITHMETIC */ |
| |
| /** NEON kernel to perform Non-Maxima suppression for Canny Edge. |
| * |
| * @note This kernel is meant to be used alongside CannyEdge and performs a non-maxima suppression using magnitude and phase of input |
| * to characterize points as possible edges. Thus, at the end, each point will be set to EDGE, NO_EDGE or MAYBE. |
| * |
| * @note Hysteresis is computed in @ref NEEdgeTraceKernel |
| */ |
| class NEEdgeNonMaxSuppressionKernel : public INEKernel |
| { |
| public: |
| /** Default constructor */ |
| NEEdgeNonMaxSuppressionKernel(); |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| NEEdgeNonMaxSuppressionKernel(const NEEdgeNonMaxSuppressionKernel &) = delete; |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| NEEdgeNonMaxSuppressionKernel &operator=(const NEEdgeNonMaxSuppressionKernel &) = delete; |
| /** Allow instances of this class to be moved */ |
| NEEdgeNonMaxSuppressionKernel(NEEdgeNonMaxSuppressionKernel &&) = default; |
| /** Allow instances of this class to be moved */ |
| NEEdgeNonMaxSuppressionKernel &operator=(NEEdgeNonMaxSuppressionKernel &&) = default; |
| /** Default destructor */ |
| ~NEEdgeNonMaxSuppressionKernel() = default; |
| |
| /** Initialise the kernel's sources, destination and border mode. |
| * |
| * @param[in] magnitude Source tensor - Magnitude. Data type supported: U16/U32. |
| * @param[in] phase Source tensor - Quantized phase. Data type supported: U8. |
| * @param[out] output Output tensor. Data type supported: U8. It will be filled with 0 for "no edge", 127 for "maybe", 255 for "edge" |
| * @param[in] upper_thr Upper threshold used for the hysteresis |
| * @param[in] lower_thr Lower threshold used for the hysteresis |
| * @param[in] border_undefined True if the border mode is undefined. False if it's replicate or constant. |
| */ |
| void configure(const ITensor *magnitude, const ITensor *phase, ITensor *output, int32_t upper_thr, int32_t lower_thr, bool border_undefined); |
| |
| // Inherited methods overridden: |
| void run(const Window &window, const ThreadInfo &info) override; |
| BorderSize border_size() const override; |
| |
| private: |
| /** Common signature for all the specialised non-maxima suppression functions |
| * |
| * @param[in] magnitude_ptr Pointer to the first input tensor. |
| * @param[in] phase_ptr Pointer to the second input tensor. |
| * @param[out] output_ptr Pointer to the output tensor |
| * @param[in] stride_mag Stride of the magnitude tensor |
| * @param[in] upper_thr Upper threshold used for the hysteresis |
| * @param[in] lower_thr Lower threshold used for the hysteresis |
| */ |
| using EdgeNonMaxSupprFunction = void(const void *__restrict magnitude_ptr, const void *__restrict phase_ptr, void *__restrict output_ptr, const uint32_t stride_mag, const int32_t upper_thr, |
| const int32_t lower_thr); |
| |
| EdgeNonMaxSupprFunction *_func; /**< Non-Maxima suppression function to use for the particular tensor types passed to configure() */ |
| const ITensor *_magnitude; /**< Source tensor - Magnitude */ |
| const ITensor *_phase; /**< Source tensor - Quantized phase */ |
| ITensor *_output; /**< Destination tensor */ |
| int32_t _lower_thr; /**< Lower threshold used for the hysteresis */ |
| int32_t _upper_thr; /**< Upper threshold used for the hysteresis */ |
| }; |
| |
| /** NEON kernel to perform Edge tracing */ |
| class NEEdgeTraceKernel : public INEKernel |
| { |
| public: |
| /** Default constructor */ |
| NEEdgeTraceKernel(); |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| NEEdgeTraceKernel(const NEEdgeTraceKernel &) = delete; |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| NEEdgeTraceKernel &operator=(const NEEdgeTraceKernel &) = delete; |
| /** Allow instances of this class to be moved */ |
| NEEdgeTraceKernel(NEEdgeTraceKernel &&) = default; |
| /** Allow instances of this class to be moved */ |
| NEEdgeTraceKernel &operator=(NEEdgeTraceKernel &&) = default; |
| /** Default constructor */ |
| ~NEEdgeTraceKernel() = default; |
| |
| /** Initialise the kernel's source, destination and border mode. |
| * |
| * @param[in,out] input Source tensor. Data type supported: U8. Must contain 0 for "no edge", 127 for "maybe", 255 for "edge" |
| * @param[in,out] output Destination tensor. Data type supported: U8. Must be initialized to 0 (No edge). |
| */ |
| void configure(ITensor *input, ITensor *output); |
| |
| // Inherited methods overridden: |
| void run(const Window &window, const ThreadInfo &info) override; |
| BorderSize border_size() const override; |
| bool is_parallelisable() const override; |
| |
| private: |
| ITensor *_input; /**< Source tensor */ |
| ITensor *_output; /**< Destination tensor */ |
| }; |
| } // namespace arm_compute |
| #endif /* __ARM_COMPUTE_NECANNYEDGEKERNEL_H */ |