OpenCV函数cvWarpPerspective透视变换实例

#include<cv.h>#include<highgui.h>#pragma comment(lib, "cv.lib")#pragma comment(lib, "cxcore.lib")#pragma comment(lib, "highgui.lib")int main(){CvPoint2D32f srcTri[4], dstTri[4];CvMat*       warp_mat = cvCreateMat (3, 3, CV_32FC1);IplImage*    src = NULL;IplImage*    dst = NULL;src = cvLoadImage ("test.png", 1);dst = cvCloneImage (src);dst->origin = src->origin;cvZero (dst);srcTri[0].x = 0;srcTri[0].y = 0;srcTri[1].x = src->width - 1;srcTri[1].y = 0;srcTri[2].x = 0;srcTri[2].y = src->height - 1;srcTri[3].x = src->width - 1;srcTri[3].y = src->height - 1;dstTri[0].x = src->width * 0.05;dstTri[0].y = src->height * 0.33;dstTri[1].x = src->width * 0.9;dstTri[1].y = src->height * 0.25;dstTri[2].x = src->width * 0.2;dstTri[2].y = src->height * 0.7;dstTri[3].x = src->width * 0.8;dstTri[3].y = src->height * 0.9;cvGetPerspectiveTransform (srcTri, dstTri, warp_mat);cvWarpPerspective (src, dst, warp_mat);cvNamedWindow("src", 1);cvShowImage("src", src);cvNamedWindow ("Affine_Transform", 1);cvShowImage ("Affine_Transform", dst);cvWaitKey (0);cvReleaseImage (&src);cvReleaseImage (&dst);cvReleaseMat (&warp_mat);return 0;}