#include <opencv2/core/core.hpp>                                                                                                   
#include <opencv2/highgui/highgui.hpp>
#include <math.h>
#include <string.h>
#include <opencv/cv.h>
#include <stdio.h>
 
using namespace cv;
 
int width, height;
char pic_name[20];
Mat mat1;
 
void mySmooth(Mat mat1, Mat mat2, int flag, int width, int height){
    IplImage pI1 = mat1;    
    IplImage pI2 = mat2;
 
    cvSmooth(&pI1, &pI2, flag, width, height);
}
 
int main(int argc,char *argv[]){
    memcpy(pic_name,argv[1], sizeof(argv[1]));
    mat1 = imread(pic_name, 1);
 
    imshow("1", mat1);
    mySmooth(mat1, mat1,CV_GAUSSIAN, 23, 23);                                                                                      
    imshow("2", mat1);
    cv::waitKey(0);
    return 0;
}

cv::Mat imageROI;
imageROI = img(cv::Rect(40,40,40,40));

/**************取出圓形感興趣區域**********/
    mat1 = imread(pic_name, 1);                                                                                                    
    src = mat1;
    res = cvCreateImage(cvGetSize(&src), 8, 3);
    roi = cvCreateImage(cvGetSize(&src), 8, 1);
 
    cvZero(roi);
    cvZero(res);
    cvCircle(roi,cvPoint(50, 50), 30,CV_RGB(255, 255, 255),⑴, 8, 0);
    cvAnd(&src, &src, res, roi);    
    /******************************************/

#include <opencv2/core/core.hpp>                                                                                                   
#include <opencv2/highgui/highgui.hpp>
#include <math.h>
#include <string.h>
#include <opencv/cv.h>
#include <stdio.h>
 
using namespace cv;
 
int width, height;
int pic_info[3];
char pic_name[20];
Mat mat1;
IplImage src, *res, *roi;
 
void mySmooth(Mat mat1, Mat mat2, int flag, int width, int height){
	IplImage pI1 = mat1;	
	IplImage pI2 = mat2;
 
	cvSmooth(&pI1, &pI2, flag, width, height);
}
 
void mypic_merge(IplImage* src, IplImage* res, IplImage* dst){
	CvScalar s;
	int height = src->height;
	int width = src->width;
	int i, j;
 
	for(i=0;i<height;i++){
		for(j=0;j<width;j++){
			s = cvGet2D(res, i, j);
			if((s.val[0] == 0) && (s.val[1] == 0) && (s.val[2] == 0)){
				s = cvGet2D(src, i, j);	
			}
			cvSet2D(dst,i,j,s);
		}
	}
}
 
void on_mouse( int event, int x, int y, int flags, void* ustc)  
{
 
	if(event == CV_EVENT_LBUTTONDOWN){
		pic_info[0] = x;   /*width1*/
		pic_info[1] = y;   /*height1*/
		pic_info[2] = 0;   /*width2*/
		mat1=cv::imread(pic_name,1);  
		cv::imshow("1",mat1);
	}
	if(flags == CV_EVENT_FLAG_LBUTTON){
		x = abs(x - pic_info[0]);
		y = abs(y - pic_info[1]);
		pic_info[2] = (int)sqrt((x*x + y*y));
		mat1=cv::imread(pic_name,1);
		src = mat1;
 
		res = cvCreateImage(cvGetSize(&src), 8, 3);
		roi = cvCreateImage(cvGetSize(&src), 8, 1);
 
/**************取出圓形感興趣區域**********/
		cvZero(roi);
		cvZero(res);
		cvCircle(roi,cvPoint(pic_info[0], pic_info[1]), pic_info[2],CV_RGB(255, 255, 255),⑴, 8, 0);
		cvAnd(&src, &src, res, roi);    
/******************************************/
		mySmooth(mat1, mat1,CV_GAUSSIAN, 23, 23);
		mypic_merge(&src, res, res);
 
		cvNamedWindow("2", 1);
		cvShowImage("2", res);
	}
	printf("circle:%d
", pic_info[2]);
} 
 
int main(int argc,char *argv[]){
	memcpy(pic_name,argv[1], sizeof(argv[1]));
	mat1 = imread(pic_name, 1);
	width = mat1.rows;
	height = mat1.cols;
 
	imshow("1", mat1);
	cvSetMouseCallback("1", on_mouse, NULL);
	cv::waitKey(0);
	return 0;
}