效果图：

代码：

// FindGravity.cpp : 定义控制台应用程序的入口点。//#include "stdafx.h"#include 
    
     #include 
     
      #include "cv.h" #include "highgui.h" #include 
      
         #include 
       
        #pragma comment(lib,"opencv_core2410d.lib")                #pragma comment(lib,"opencv_highgui2410d.lib")                #pragma comment(lib,"opencv_imgproc2410d.lib")   using namespace std;using namespace cv;void FindGravity(){	}/** 计算二值图像的重心* @param[in] src  输入的待处理图像* @param[out] center 重心坐标* @retval 0  操作成功* @retval -1 操作失败* @note 输入图像是二值化图像* @note xc=M10/M00, yc=M01/M00, 其中 Mx_order,y_order=SUMx,y(I(x,y)*x^x_order*y^y_order) */ static int aoiGravityCenter(IplImage *src, CvPoint ¢er) {  //if(!src)  // return GRAVITYCENTER__SRC_IS_NULL;  double m00, m10, m01;  CvMoments moment;  cvMoments( src, &moment, 1);  m00 = cvGetSpatialMoment( &moment, 0, 0 );  if( m00 == 0)    return 1;  m10 = cvGetSpatialMoment( &moment, 1, 0 );  m01 = cvGetSpatialMoment( &moment, 0, 1 );  center.x = (int) (m10/m00);  center.y = (int) (m01/m00);  return 0; }  IplImage* binary_image(IplImage* src) {	 		// cvThreshold( src, src, 100, 255, CV_THRESH_BINARY );//100 is the thredhold 		 IplImage* one_channel = cvCreateImage(cvSize(src->width,src->height),IPL_DEPTH_8U,0);				 for(int y = 0;y < src->height;y++)		 {			 char *ptr= src->imageData + y * src->widthStep;			 char *p_one_channel = one_channel->imageData + y * one_channel->widthStep;			 for(int x = 0;x < src->width;x++)			 {				 int temp = ptr[3*x];				 if (temp != 0)//不是黑色也就是说不是背景				 {					 p_one_channel[x] = 255;//设置为白色				 }				 else				 {					 p_one_channel[x] = 0;				 }				 //ptr[3*x]=				 //ptr[3*x+1]=				 //ptr[3*x+2]=; 			 }		 }		 return one_channel; }int _tmain(int argc, _TCHAR* argv[]){	string str_name = "seg_right.bmp";	IplImage* src; 	IplImage* draw = cvLoadImage(str_name.c_str(),1);//绘制重心的图像		if ((src = cvLoadImage(str_name.c_str(),1))!=0)	{		//src = binary_image(src);		cvNamedWindow( "binary image", 1 ); 		cvShowImage( "binary image", binary_image(src) );	}	CvPoint xy;	aoiGravityCenter(binary_image(src),xy);	cout<
        
         <
        
       
      
     
    

我调试好的工程：

http://download.csdn.net/detail/wangyaninglm/9389338