First implementation

vendor/gocv.io/x/gocv/calib3d.cpp

@@ -0,0 +1,29 @@
+#include "calib3d.h"
+
+
+void Fisheye_UndistortImage(Mat distorted, Mat undistorted, Mat k, Mat d) {
+    cv::fisheye::undistortImage(*distorted, *undistorted, *k, *d);
+}
+
+void Fisheye_UndistortImageWithParams(Mat distorted, Mat undistorted, Mat k, Mat d, Mat knew, Size size) {
+    cv::Size sz(size.width, size.height);
+    cv::fisheye::undistortImage(*distorted, *undistorted, *k, *d, *knew, sz);
+}
+
+void InitUndistortRectifyMap(Mat cameraMatrix,Mat distCoeffs,Mat r,Mat newCameraMatrix,Size size,int m1type,Mat map1,Mat map2) {
+    cv::Size sz(size.width, size.height);
+    cv::initUndistortRectifyMap(*cameraMatrix,*distCoeffs,*r,*newCameraMatrix,sz,m1type,*map1,*map2);
+}
+
+Mat GetOptimalNewCameraMatrixWithParams(Mat cameraMatrix,Mat distCoeffs,Size size,double alpha,Size newImgSize,Rect* validPixROI,bool centerPrincipalPoint) {
+    cv::Size sz(size.width, size.height);
+    cv::Size newSize(newImgSize.width, newImgSize.height);
+    cv::Rect rect(validPixROI->x,validPixROI->y,validPixROI->width,validPixROI->height);
+    cv::Mat* mat = new cv::Mat(cv::getOptimalNewCameraMatrix(*cameraMatrix,*distCoeffs,sz,alpha,newSize,&rect,centerPrincipalPoint));
+    validPixROI->x = rect.x;
+    validPixROI->y = rect.y;
+    validPixROI->width = rect.width;
+    validPixROI->height = rect.height;
+    return mat;
+}
+