#include <cv.h> #include <highgui.h> #pragma comment( lib, "cv.lib" ) #pragma comment( lib, "cxcore.lib" ) #pragma comment( lib, "highgui.lib" )  int main() {     IplImage * src=cvLoadImage("lena.jpg",0);   //cvSmooth(src,src,CV_BLUR,3,3,0,0);    cvThreshold(src,src,50,255,CV_THRESH_BINARY_INV);   IplImage* paintx=cvCreateImage( cvGetSize(src),IPL_DEPTH_8U, 1 );   IplImage* painty=cvCreateImage( cvGetSize(src),IPL_DEPTH_8U, 1 );   cvZero(paintx);   cvZero(painty);   int* v=new int[src->width];   int* h=new int[src->height];   memset(v,0,src->width*4);   memset(h,0,src->height*4);      int x,y;   CvScalar s,t;   for(x=0;x<src->width;x++)   {     for(y=0;y<src->height;y++)     {       s=cvGet2D(src,y,x);            if(s.val[0]==0)         v[x]++;              }       }      for(x=0;x<src->width;x++)   {     for(y=0;y<v[x];y++)     {           t.val[0]=255;       cvSet2D(paintx,y,x,t);        }       }      for(y=0;y<src->height;y++)   {     for(x=0;x<src->width;x++)     {       s=cvGet2D(src,y,x);            if(s.val[0]==0)         h[y]++;        }     }   for(y=0;y<src->height;y++)   {     for(x=0;x<h[y];x++)     {             t.val[0]=255;       cvSet2D(painty,y,x,t);          }       }   cvNamedWindow("二值圖像",1);   cvNamedWindow("垂直積分投影",1);   cvNamedWindow("水平積分投影",1);   cvShowImage("二值圖像",src);   cvShowImage("垂直積分投影",paintx);   cvShowImage("水平積分投影",painty);   cvWaitKey(0);   cvDestroyAllWindows();   cvReleaseImage(&src);   cvReleaseImage(&paintx);   cvReleaseImage(&painty);   return 0; }