1 /* 2 * Copyright (c) 2017-2020 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_CLLAPLACIANPYRAMID_H 25 #define ARM_COMPUTE_CLLAPLACIANPYRAMID_H 26 27 #include "arm_compute/core/Types.h" 28 #include "arm_compute/runtime/CL/CLPyramid.h" 29 #include "arm_compute/runtime/CL/functions/CLDepthConvertLayer.h" 30 #include "arm_compute/runtime/CL/functions/CLElementwiseOperations.h" 31 #include "arm_compute/runtime/CL/functions/CLGaussian5x5.h" 32 #include "arm_compute/runtime/CL/functions/CLGaussianPyramid.h" 33 #include "arm_compute/runtime/IFunction.h" 34 35 #include <cstddef> 36 #include <cstdint> 37 #include <memory> 38 39 namespace arm_compute 40 { 41 class ICLTensor; 42 43 /** Basic function to execute laplacian pyramid. This function calls the following OpenCL kernels and functions: 44 * 45 * -# @ref CLGaussianPyramidHalf 46 * -# @ref CLGaussian5x5 47 * -# @ref CLArithmeticSubtraction 48 * 49 * First a Gaussian pyramid is created. Then, for each level i, the corresponding tensor I(i) is blurred with the Gaussian 5x5 filter, and then 50 * difference between the two tensors is the corresponding level L(i) of the Laplacian pyramid. 51 * L(i) = I(i) - Gaussian5x5(I(i)) 52 * Level 0 has always the same first two dimensions as the input tensor. 53 * 54 * @deprecated This function is deprecated and is intended to be removed in 21.05 release 55 * 56 */ 57 class CLLaplacianPyramid : public IFunction 58 { 59 public: 60 /** Constructor */ 61 CLLaplacianPyramid(); 62 /** Initialise the function's source, destinations and border mode. 63 * 64 * @param[in] input Source tensor. Data types supported: U8. 65 * @param[out] pyramid Destination pyramid tensors, Data types supported at each level: S16. 66 * @param[out] output The lowest resolution tensor necessary to reconstruct the input tensor from the pyramid. Data types supported: S16. 67 * The first two dimensions of this tensor must match the first two dimensions of the tensor in the last level of the pyramid, that is: 68 * output.width = input.width() / pow(2,pyramid_levels-1) and out.height = in.height() / pow(2,pyramid_levels-1) 69 * @param[in] border_mode Border mode to use. 70 * @param[in] constant_border_value (Optional) Constant value to use for borders if border_mode is set to CONSTANT. 71 * 72 */ 73 void configure(ICLTensor *input, CLPyramid *pyramid, ICLTensor *output, BorderMode border_mode, uint8_t constant_border_value); 74 /** Initialise the function's source, destinations and border mode. 75 * 76 * @param[in] compile_context The compile context to be used. 77 * @param[in] input Source tensor. Data types supported: U8. 78 * @param[out] pyramid Destination pyramid tensors, Data types supported at each level: S16. 79 * @param[out] output The lowest resolution tensor necessary to reconstruct the input tensor from the pyramid. Data types supported: S16. 80 * The first two dimensions of this tensor must match the first two dimensions of the tensor in the last level of the pyramid, that is: 81 * output.width = input.width() / pow(2,pyramid_levels-1) and out.height = in.height() / pow(2,pyramid_levels-1) 82 * @param[in] border_mode Border mode to use. 83 * @param[in] constant_border_value (Optional) Constant value to use for borders if border_mode is set to CONSTANT. 84 * 85 */ 86 void configure(const CLCompileContext &compile_context, ICLTensor *input, CLPyramid *pyramid, ICLTensor *output, BorderMode border_mode, uint8_t constant_border_value); 87 88 // Inherited methods overridden: 89 void run() override; 90 91 private: 92 size_t _num_levels; 93 CLGaussianPyramidHalf _gaussian_pyr_function; 94 std::vector<CLGaussian5x5> _convf; 95 std::vector<CLArithmeticSubtraction> _subf; 96 CLDepthConvertLayer _depth_function; 97 CLPyramid _gauss_pyr; 98 CLPyramid _conv_pyr; 99 }; 100 } 101 #endif /*ARM_COMPUTE_CLLAPLACIANPYRAMID_H */ 102