MATLAB基本操作（十）：关于OpenCV坐标系与MATLAB中矩阵行与列的对应

IplImage *img = cvLoadImage("D:\\07Personal files\\headpicture.jpg");
	CvScalar pixel;

	CvScalar s;
	s=cvGet2D(img,10,2);
    
	printf("B=%f,G=%f,R=%f/t", s.val[0], s.val[1], s.val[2]);	

>> I=imread(‘headpicture.jpg‘);
>> R=I(:,:,1);
>> G=I(:,:,2);
>> B=I(:,:,3);
>> R(11,3)

ans =

   31

>> G(11,3)

ans =

   27

>> B(11,3)

ans =

   28

vector<Point2f> corners;
...
FILE* fp = fopen(str, "wt");  
	Point2f data;
	for (int i=0;i<corners1.size();i++)
	{
		data=corners1.at(i);			      
		fprintf(fp, "%f	%f\n", data.x,data.y);   
	
	}
   fclose(fp);