conversion between CvMat* and cv::Mat

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cvarrToMat Converts CvMat, IplImage , or CvMatND to Mat.

Fixed the conversions using new syntax.

CvMat* A = cvCreateMat(10, 10, CV_32F);
cvSetIdentity(A);
IplImage A1;
cvGetImage(A, &A1);
Mat B (A);
Mat B1 (A1);
IplImage C = B.operator IplImage();
CvMat C1 = B1.operator CvMat();
// now A, A1, B, B1, C and C1 are different headers
// for the same 10x10 floating-point array.
// note that you will need to use "&"
// to pass C & C1 to OpenCV functions, for example:
printf("%g\n", cvNorm(&C1, 0, CV_L2));

https://github.com/Itseez/opencv/blob...