[GSoC22] Data Augmentation Module in OpenCV (imgaug)

modules/imgaug/CMakeLists.txt

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+set(the_description "Data Augmentation Module")
+ocv_define_module(imgaug opencv_imgproc opencv_core opencv_imgcodecs opencv_highgui WRAP python)

modules/imgaug/LICENSE

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modules/imgaug/include/opencv2/imgaug.hpp

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+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+#ifndef OPENCV_IMGAUG_HPP
+#define OPENCV_IMGAUG_HPP
+
+#include "opencv2/imgaug/transforms.hpp"
+#include "opencv2/imgaug/transforms_det.hpp"
+#include "opencv2/imgaug/functional.hpp"
+#include "opencv2/imgaug/rng.hpp"
+
+/** @defgroup imgaug Data Augmentation Module for Efficient Data Preprocessing
+ *  @{
+ *  @defgroup det Data Augmentation for Object Detection
+ *  @}
+*/
+
+
+#endif

modules/imgaug/include/opencv2/imgaug/functional.hpp

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+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+#ifndef OPENCV_AUG_FUNCTIONAL_HPP
+#define OPENCV_AUG_FUNCTIONAL_HPP
+#include <opencv2/core.hpp>
+#include <vector>
+
+namespace cv {
+    //! @addtogroup imgaug
+    //! @{
+
+    /** @brief Adjust the brightness of the given image.
+     *
+     * @param img Source image. This operation is inplace.
+     * @param brightness_factor brightness factor which controls the brightness of the adjusted image.
+     * Brightness factor should be >= 0. When brightness factor is larger than 1, the output image will be brighter than original.
+     * When brightness factor is less than 1, the output image will be darker than original.
+     */
+    void adjustBrightness(Mat& img, double brightness_factor);
+
+    /** @brief Adjust the contrast of the given image.
+     *
+     * @param img Source image. This operation is inplace.
+     * @param contrast_factor contrast factor should be larger than 1. It controls the contrast of the adjusted image.
+     */
+    void adjustContrast(Mat& img, double contrast_factor);
+
+    /** @brief Adjust the saturation of the given image.
+     *
+     * @param img Source image. This operation is inplace.
+     * @param saturation_factor saturation factor should be larger than 1. It controls the saturation of the adjusted image.
+     */
+    void adjustSaturation(Mat& img, double saturation_factor);
+
+    /** @brief Adjust the hue of the given image.
+     *
+     * @param img Source image. This operation is inplace.
+     * @param hue_factor hue factor should be in range [-1, 1]. It controls the hue of the adjusted image.
+     */
+    void adjustHue(Mat& img, double hue_factor);
+
+    //! @}
+};
+
+#endif

modules/imgaug/include/opencv2/imgaug/rng.hpp

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+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+#ifndef OPENCV_AUG_RNG_HPP
+#define OPENCV_AUG_RNG_HPP
+
+
+
+namespace cv{
+
+    namespace imgaug{
+        //! @addtogroup imgaug
+        //! @{
+
+        //! Initial state of the random number generator cv::imgaug::rng. If you don't manually set it using cv::imgaug::setSeed,
+        //! it will be set to the current tick count returned by cv::getTickCount.
+        extern uint64 state;
+
+        //! Random number generator for data augmentation module
+        extern cv::RNG rng;
+
+        /** @brief Manually set the initial state of the random number generator cv::imgaug::rng.
+         *
+         * @param seed The seed value needed to generate a random number.
+         */
+        CV_EXPORTS_W void setSeed(uint64 seed);
+
+        //! @}
+    }
+}
+
+
+
+
+#endif //OPENCV_AUG_RNG_HPP