1 /** 2 * Copyright 2020-2023 Huawei Technologies Co., Ltd 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #ifndef MINDSPORE_CCSRC_MINDDATA_DATASET_KERNELS_IMAGE_RANDOM_COLOR_ADJUST_OP_H_ 17 #define MINDSPORE_CCSRC_MINDDATA_DATASET_KERNELS_IMAGE_RANDOM_COLOR_ADJUST_OP_H_ 18 19 #include <memory> 20 #include <random> 21 #include <string> 22 #include <vector> 23 24 #include "minddata/dataset/core/tensor.h" 25 #include "minddata/dataset/kernels/tensor_op.h" 26 #include "minddata/dataset/util/status.h" 27 28 namespace mindspore { 29 namespace dataset { 30 class RandomColorAdjustOp : public RandomTensorOp { 31 public: 32 // Constructor for RandomColorAdjustOp. 33 // @param s_bright_factor brightness change range start value. 34 // @param e_bright_factor brightness change range end value. 35 // @param s_contrast_factor contrast change range start value. 36 // @param e_contrast_factor contrast change range start value. 37 // @param s_saturation_factor saturation change range end value. 38 // @param e_saturation_factor saturation change range end value. 39 // @param s_hue_factor hue change factor start value, this should be greater than -0.5. 40 // @param e_hue_factor hue change factor start value, this should be less than 0.5. 41 // @param seed optional seed to pass in to the constructor. 42 // @details the randomly chosen degree is uniformly distributed. 43 RandomColorAdjustOp(float s_bright_factor, float e_bright_factor, float s_contrast_factor, float e_contrast_factor, 44 float s_saturation_factor, float e_saturation_factor, float s_hue_factor, float e_hue_factor); 45 46 ~RandomColorAdjustOp() override = default; 47 48 // Overrides the base class compute function. 49 // Calls multiple transform functions in ImageUtils, this function takes an input tensor. 50 // and transforms its data using openCV, the output memory is manipulated to contain the result. 51 // @return Status The status code returned. 52 Status Compute(const std::shared_ptr<Tensor> &input, std::shared_ptr<Tensor> *output) override; 53 Name()54 std::string Name() const override { return kRandomColorAdjustOp; } 55 56 private: 57 /// \brief Compare two floating point variables. Return true if they are same / very close. 58 static inline bool CmpFloat(const float &a, const float &b, float epsilon = 0.0000000001f) { 59 return (std::fabs(a - b) < epsilon); 60 } 61 62 float bright_factor_start_; 63 float bright_factor_end_; 64 float contrast_factor_start_; 65 float contrast_factor_end_; 66 float saturation_factor_start_; 67 float saturation_factor_end_; 68 float hue_factor_start_; 69 float hue_factor_end_; 70 }; 71 } // namespace dataset 72 } // namespace mindspore 73 #endif // MINDSPORE_CCSRC_MINDDATA_DATASET_KERNELS_IMAGE_RANDOM_COLOR_ADJUST_OP_H_ 74