Question

opencv求教 求矩阵中整数和

#include"stdio.h"
#include"highgui.h"
#include"cv.h"
void main()
{
int a[]={1,2,3,4,5,6};
int s;
CvMat* mat=cvCreateMatHeader(2,3,CV_64FC1);
cvInitMatHeader(mat,2,3,CV_8SC1,a);
int *p,row,col;
for(row=0;row<mat->rows;row++)
{
p=(int*)(mat->data.ptr+row*mat->step);
for(col=0;col<mat->cols;col++)
s+=*p++;
}
printf("%d",s);
}

Answer 1

//如果是求a的和，如下：
void main()
{
int a[]={1,2,3,4,5,6};
CvMat mat=cvMat(2, 3, CV_8UC1,a);//由数组创建mat
CvScalar sum;
cvScale(&mat,&mat,6,0);//先让每个数都乘以6::(1*6+2*6+3*6+4*6+5*6+6*6)
sum=cvAvg(&mat);//求平均，即(1*6+2*6+3*6+4*6+5*6+6*6)/6
printf("%d",sum.val[0]);
}