1 #include "opencv2/highgui/highgui.hpp" 2 #include "opencv2/imgproc/imgproc.hpp" 3 #include <iostream> 4 #include <stdio.h> 5 6 using namespace cv; 7 using namespace std; 8 9 /// 全局变量 10 char* source_window = "Source image"; 11 char* warp_window = "Warp"; 12 char* warp_rotate_window = "Warp + Rotate"; 13 14 /** @function main */ 15 int main( int argc, char** argv ) 16 { 17 Point2f srcTri[3]; 18 Point2f dstTri[3]; 19 20 Mat rot_mat( 2, 3, CV_32FC1 ); 21 Mat warp_mat( 2, 3, CV_32FC1 ); 22 Mat src, warp_dst, warp_rotate_dst; 23 24 /// 加载源图像 25 src = imread( argv[1], 1 ); 26 27 /// 设置目标图像的大小和类型与源图像一致 28 warp_dst = Mat::zeros( src.rows, src.cols, src.type() ); 29 30 /// 设置源图像和目标图像上的三组点以计算仿射变换 31 srcTri[0] = Point2f( 0,0 ); 32 srcTri[1] = Point2f( src.cols - 1, 0 ); 33 srcTri[2] = Point2f( 0, src.rows - 1 ); 34 35 dstTri[0] = Point2f( src.cols*0.0, src.rows*0.33 ); 36 dstTri[1] = Point2f( src.cols*0.85, src.rows*0.25 ); 37 dstTri[2] = Point2f( src.cols*0.15, src.rows*0.7 ); 38 39 /// 求得仿射变换 40 warp_mat = getAffineTransform( srcTri, dstTri ); 41 42 /// 对源图像应用上面求得的仿射变换 43 warpAffine( src, warp_dst, warp_mat, warp_dst.size() ); 44 45 /** 对图像扭曲后再旋转 */ 46 47 /// 计算绕图像中点顺时针旋转50度缩放因子为0.6的旋转矩阵 48 Point center = Point( warp_dst.cols/2, warp_dst.rows/2 ); 49 double angle = -50.0; 50 double scale = 0.6; 51 52 /// 通过上面的旋转细节信息求得旋转矩阵 53 rot_mat = getRotationMatrix2D( center, angle, scale ); 54 55 /// 旋转已扭曲图像 56 warpAffine( warp_dst, warp_rotate_dst, rot_mat, warp_dst.size() ); 57 58 /// 显示结果 59 namedWindow( source_window, CV_WINDOW_AUTOSIZE ); 60 imshow( source_window, src ); 61 62 namedWindow( warp_window, CV_WINDOW_AUTOSIZE ); 63 imshow( warp_window, warp_dst ); 64 65 namedWindow( warp_rotate_window, CV_WINDOW_AUTOSIZE ); 66 imshow( warp_rotate_window, warp_rotate_dst ); 67 68 /// 等待用户按任意按键退出程序 69 waitKey(0); 70 71 return 0; 72 }
