OpenCV C++仿射变换
这个程序使用OpenCV执行仿射变换。输入图像执行仿射变换后的图片执行仿射变换加旋转50度后的图片代码#include opencv2/imgcodecs.hpp #include opencv2/highgui.hpp #include opencv2/imgproc.hpp #include iostream int main() { Mat src imread(input.jpg); Point2f srcTri[3]; srcTri[0] Point2f( 0.f, 0.f ); srcTri[1] Point2f( src.cols - 1.f, 0.f ); srcTri[2] Point2f( 0.f, src.rows - 1.f ); Point2f dstTri[3]; dstTri[0] Point2f( 0.f, src.rows*0.33f ); dstTri[1] Point2f( src.cols*0.85f, src.rows*0.25f ); dstTri[2] Point2f( src.cols*0.15f, src.rows*0.7f ); Mat warp_mat getAffineTransform( srcTri, dstTri ); Mat warp_dst Mat::zeros( src.rows, src.cols, src.type() ); warpAffine( src, warp_dst, warp_mat, warp_dst.size() ); Point center Point( warp_dst.cols/2, warp_dst.rows/2 ); double angle -50.0; double scale 0.6; Mat rot_mat getRotationMatrix2D( center, angle, scale ); Mat warp_rotate_dst; warpAffine( warp_dst, warp_rotate_dst, rot_mat, warp_dst.size() ); imshow( Source image, src ); imshow( Warp, warp_dst ); imshow( Warp Rotate, warp_rotate_dst ); waitKey(); return 0; }
