1 /** 2 * Copyright 2020 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_MATH_UTILS_H_ 17 #define MINDSPORE_CCSRC_MINDDATA_DATASET_KERNELS_IMAGE_MATH_UTILS_H_ 18 19 #include <memory> 20 #include <random> 21 #include <vector> 22 #include "minddata/dataset/util/status.h" 23 24 #define CV_PI 3.1415926535897932384626433832795 25 26 namespace mindspore { 27 namespace dataset { 28 29 /// \brief Returns lower and upper pth percentiles of the input histogram. 30 /// \param[in] hist: Input histogram (mutates the histogram for computation purposes) 31 /// \param[in] hi_p: Right side percentile 32 /// \param[in] low_p: Left side percentile 33 /// \param[out] hi: Value at high end percentile 34 /// \param[out] lo: Value at low end percentile 35 Status ComputeUpperAndLowerPercentiles(std::vector<int32_t> *hist, int32_t hi_p, int32_t low_p, int32_t *hi, 36 int32_t *lo); 37 38 /// \brief Converts degrees input to radians. 39 /// \param[in] degrees: Input degrees 40 /// \param[out] radians_target: Radians output 41 Status DegreesToRadians(float_t degrees, float_t *radians_target); 42 43 /// \brief Generates a random real number in [a,b). 44 /// \param[in] a: Start of range 45 /// \param[in] b: End of range 46 /// \param[in] rnd: Random device 47 /// \param[out] result: Random number in range [a,b) 48 Status GenerateRealNumber(float_t a, float_t b, std::mt19937 *rnd, float_t *result); 49 50 } // namespace dataset 51 } // namespace mindspore 52 #endif // MINDSPORE_CCSRC_MINDDATA_DATASET_KERNELS_IMAGE_MATH_UTILS_H_ 53