学步园

#include "highgui.h"<br /> #include "cv.h"<br /> #include <iostream><br /> #include <iomanip><br /> using namespace std;<br /> int main()<br /> {<br /> IplImage* src = cvLoadImage("lena.jpg");<br /> IplImage* dst = cvCloneImage(src);<br /> int delta = 1;<br /> int angle = 0;<br /> int opt = 1; //1表示旋转加缩放，0表示旋转<br /> double factor; //表示方法系数<br /> cvNamedWindow("src",CV_WINDOW_AUTOSIZE);<br /> cvShowImage("src",src);<br /> for (; <img src="https://admin.xuebuyuan.com/wp-includes/images/smilies/icon_wink.gif" alt=";)" class="wp-smiley" /><br /> {<br /> float m[6];<br /> CvMat M = cvMat(2, 3, CV_32F,m);<br /> int w = src->width;<br /> int h = src->height;<br /> if(opt)<br /> {<br /> factor = (cos(angle*CV_PI/180) + 1.05)*2;<br /> }<br /> else<br /> {<br /> factor = 1;<br /> }<br /> m[0] = (float)(factor*cos(-angle*2*CV_PI/180));<br /> m[1] = (float)(factor*sin(-angle*2*CV_PI/180));<br /> m[3] = -m[1];<br /> m[4] = m[0];<br /> m[2] = w*0.5f;<br /> m[5] = h*0.5f;<br /> cvGetQuadrangleSubPix(src,dst,&M);<br /> cvNamedWindow("dst",1);<br /> cvShowImage("dst",dst);<br /> if (cvWaitKey(5) == 'q')<br /> {<br /> break;<br /> }<br /> angle = (int)(angle + delta) % 360;<br /> }<br /> }<br />