| /* |
| * Copyright (c) 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_NECANNYEDGE_H__ |
| #define __ARM_COMPUTE_NECANNYEDGE_H__ |
| |
| #include "arm_compute/core/NEON/kernels/NECannyEdgeKernel.h" |
| #include "arm_compute/core/NEON/kernels/NEFillBorderKernel.h" |
| #include "arm_compute/core/Types.h" |
| #include "arm_compute/runtime/IFunction.h" |
| #include "arm_compute/runtime/Tensor.h" |
| |
| #include <cstdint> |
| #include <memory> |
| |
| namespace arm_compute |
| { |
| class ITensor; |
| |
| /** Basic function to execute canny edge on NEON. This function calls the following NEON kernels and functions: |
| * |
| * -# @ref NEFillBorderKernel (if border_mode == REPLICATE or border_mode == CONSTANT) |
| * -# @ref NESobel3x3 (if gradient_size == 3) or |
| * @ref NESobel5x5 (if gradient_size == 5) or |
| * @ref NESobel7x7 (if gradient_size == 7) |
| * -# @ref NEGradientKernel |
| * -# @ref NEEdgeNonMaxSuppressionKernel |
| * -# @ref NEEdgeTraceKernel |
| * |
| */ |
| class NECannyEdge : public IFunction |
| { |
| public: |
| /** Constructor |
| * |
| * Initialize Sobel kernel to nullptr. |
| */ |
| NECannyEdge(); |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| NECannyEdge(const NECannyEdge &) = delete; |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| NECannyEdge &operator=(const NECannyEdge &) = delete; |
| /** Initialise the function's source, destination, thresholds, gradient size, normalization type and border mode. |
| * |
| * @param[in, out] input Source tensor. Data type supported: U8. (Written to only for @p border_mode != UNDEFINED) |
| * @param[out] output Destination tensor. Data type supported: U8. |
| * @param[in] upper_thr Upper threhold used for the hysteresis |
| * @param[in] lower_thr Lower threshold used for the hysteresis. |
| * @param[in] gradient_size Gradient size (3, 5 or 7) |
| * @param[in] norm_type Normalization type. If 1, L1-Norm otherwise L2-Norm |
| * @param[in] border_mode Border mode to use for the convolution. |
| * @param[in] constant_border_value (Optional) Constant value to use for borders if border_mode is set to CONSTANT. |
| * @param[in] use_fp16 (Optional) If true the FP16 kernels will be used. If false F32 kernels are used. |
| * |
| */ |
| void configure(ITensor *input, ITensor *output, int32_t upper_thr, int32_t lower_thr, int32_t gradient_size, int32_t norm_type, BorderMode border_mode, uint8_t constant_border_value = 0, |
| bool use_fp16 = false); |
| |
| // Inherited methods overridden: |
| void run() override; |
| |
| private: |
| std::unique_ptr<IFunction> _sobel; /**< Pointer to Sobel kernel */ |
| std::unique_ptr<INEKernel> _gradient; /**< Gradient kernel */ |
| NEEdgeNonMaxSuppressionKernel _non_max_suppr; /**< Non-Maxima suppression kernel */ |
| NEEdgeTraceKernel _edge_trace; /**< Edge tracing kernel */ |
| NEFillBorderKernel _border_mag_gradient; /**< Fill border on magnitude tensor kernel */ |
| NEFillBorderKernel _border_edge_trace; /**< Fill border before edge trace */ |
| Tensor _gx; /**< Source tensor - Gx component */ |
| Tensor _gy; /**< Source tensor - Gy component */ |
| Tensor _magnitude; /**< Source tensor - Magnitude */ |
| Tensor _phase; /**< Source tensor - Phase */ |
| Tensor _nonmax; /**< Source tensor - Non-Maxima suppressed */ |
| ITensor *_output; /**< Output tensor provided by the user. */ |
| }; |
| } |
| #endif /* __ARM_COMPUTE_NECANNYEDGE_H */ |