opencv——mat操作

//function: the mat operation
// data:12 /20
#include <cv.h>
#include <highgui.h>
#include <iostream.h>
void PrintMat(CvMat *mat)
{
    int i;
    int j;
    for (i=0; i<mat->rows; i++)
    {
        // the type of mat_depth
        switch (CV_MAT_DEPTH(mat->type))
        {
        case CV_32F:
        case CV_64F:
            //printf("aa");
            for (j=0; j<mat->cols; j++)
            {
                printf("%5.2f", (float)cvGetReal2D(mat, i,j));
                //printf("%5.5f", (float)CV_MAT_ELEM(*mat, double, i,j));
            }
            break;
        case CV_8U:
        case CV_16U:
            for (j=0; j<mat->cols; j++)
                printf("%d", (int)cvGetReal2D(mat,i,j));
            break;
        }
        printf("/n");
    }
}
int main(int argc, char* argv[])
{
    // create mat
        CvMat *myMat=cvCreateMat(2,2, CV_32FC1);

        float mata[] = {
                        1,2,3,
                        4,5,6,7,
                        8,9,10};

        float matb[] = {1,1,1,
                        1,1,1,
                        1,1,1};
        float matc[9];
        CvMat Mata;
        CvMat Matb;
        CvMat Matc;
        // initial mat header
        cvInitMatHeader(&Mata, 3,3, CV_32FC1, mata, CV_AUTOSTEP);
        cvInitMatHeader(&Matb, 3,3, CV_32FC1, matb, CV_AUTOSTEP);
        cvInitMatHeader( &Matc, 3, 3, CV_32FC1, matc, CV_AUTOSTEP );

        // print mat's element
        printf("print the mata:/n");
        PrintMat(&Mata);
        printf("print the matb:/n");
        PrintMat(&Matb);

        // Mat add function
        cvAdd(&Mata,&Matb, &Matc, NULL);

        //print the result
        printf("print the matc:/n");
        PrintMat(&Matc);

        int i;
        int j;
        // enter the numbers to the mat
        for ( i = 0; i<myMat->rows; i++ )
            for ( j = 0; j <myMat->cols; j++)
            {

             scanf("%f", &CV_MAT_ELEM(*myMat, float , i , j));
                //cin >> CV_MAT_ELEM(*myMat, float , i , j);
            }

            // print mat element
    PrintMat(myMat);
    printf("Hello World!/n");
    return 0;
}