OpenCV: 密集透射变换
OpenCV: 密集透射变换
#include "stdafx.h"
#include <cv.h>
#include <highgui.h>
int main(int argc, char** argv)
{
CvPoint2D32f srcQuad[4], dstQuad[4];
CvMat* warp_matrix = cvCreateMat(3,3,CV_32FC1);
IplImage *src, *dst;
if( argc == 1 && ((src=cvLoadImage("lena.jpg",1)) != 0 ))
{
dst = cvCloneImage(src);
dst->origin = src->origin;
cvZero(dst);
srcQuad[0].x = 0; //src Top left
srcQuad[0].y = 0;
srcQuad[1].x = src->width - 1; //src Top right
srcQuad[1].y = 0;
srcQuad[2].x = 0; //src Bottom left
srcQuad[2].y = src->height - 1;
srcQuad[3].x = src->width - 1; //src Bot right
srcQuad[3].y = src->height - 1;
//- - - - - - - - - - - - - -//
dstQuad[0].x = src->width*0.05; //dst Top left
dstQuad[0].y = src->height*0.33;
dstQuad[1].x = src->width*0.9; //dst Top right
dstQuad[1].y = src->height*0.25;
dstQuad[2].x = src->width*0.2; //dst Bottom left
dstQuad[2].y = src->height*0.7;
dstQuad[3].x = src->width*0.8; //dst Bot right
dstQuad[3].y = src->height*0.9;
cvGetPerspectiveTransform(srcQuad,dstQuad,
warp_matrix);//由四对点计算透射变换
cvWarpPerspective(src,dst,warp_matrix);//对图像进行透视变换
cvNamedWindow( "Perspective_Warp", 1 );
cvShowImage( "Perspective_Warp", dst );
cvWaitKey();
}
cvReleaseImage(&dst);
cvReleaseMat(&warp_matrix);
return 0;
}
运行结果
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