#include <cv.h>
#include <highgui.h>
#define affine
#ifdef affine
int main()
{
CvPoint2D32f srcTri[3], dstTri[3];
CvMat* rot_mat = cvCreateMat(2,3,CV_32FC1);
CvMat* warp_mat = cvCreateMat(2,3,CV_32FC1);
IplImage *src, *dst;
if(((src=cvLoadImage(".//1.jpg",1)) != 0 ))
{
dst = cvCloneImage(src);
dst->origin = src->origin;
cvZero(dst);
//COMPUTE WARP MATRIX
srcTri[0].x = 0; //src Top left
srcTri[0].y = 0;
srcTri[1].x = src->width - 1; //src Top right
srcTri[1].y = 0;
srcTri[2].x = 0; //src Bottom left
srcTri[2].y = src->height - 1;
//- - - - - - - - - - - - - - -//
//dstTri[0].x = src->width*0.0; //dst Top left
//dstTri[0].y = src->height*0.33;
//dstTri[1].x = src->width*0.85; //dst Top right
//dstTri[1].y = src->height*0.25;
//dstTri[2].x = src->width*0.15; //dst Bottom left
//dstTri[2].y = src->height*0.7;
dstTri[0].x = src->width*0.1; //dst Top left
dstTri[0].y = src->height*0.0;
dstTri[1].x = src->width*1; //dst Top right
dstTri[1].y = src->height*0.1;
dstTri[2].x = src->width*0; //dst Bottom left
dstTri[2].y = src->height*0.9;
cvGetAffineTransform(srcTri,dstTri,warp_mat);
cvWarpAffine(src,dst,warp_mat);
cvNamedWindow("src");
cvNamedWindow("dst");
cvShowImage("src" , src);
cvShowImage("dst" , dst);
//cvWaitKey(0);
//cvCopy(dst,src);
//COMPUTE ROTATION MATRIX
CvPoint2D32f center = cvPoint2D32f(src->width/2,
src->height/2);
double angle = 30;
double scale = 1;
cv2DRotationMatrix(center,angle,scale,rot_mat);
cvWarpAffine(src,dst,rot_mat);
//DO THE TRANSFORM:
cvNamedWindow( "Affine_Transform", 1 );
cvShowImage( "Affine_Transform", dst );
cvWaitKey();
}
cvReleaseImage(&dst);
cvReleaseMat(&rot_mat);
cvReleaseMat(&warp_mat);
return 0;
}
#endif
angle = –8.0时 效果图如下:
angle = 30时 效果图如下: