Mat rowRange、colRange

测试 opencv 中 Mat 的 rowRange、colRange :

1- Mat::rowRange(int startrow, int endrow) 为矩阵的指定行区间创建一个矩阵头

• startrow – An inclusive 0-based start index of the row span.// 从0开始的行间距索引
• endrow – An exclusive 0-based ending index of the row span.//终止索引

2- Mat::colRange(int startcol, int endcol) 为矩阵的指定列区间创建一个矩阵头

• startcol – An inclusive 0-based start index of the col span.// 从0开始的列间距索引
• endcol – An exclusive 0-based ending index of the col span.//终止索引

#include "opencv2/opencv.hpp"
#include"iostream"
using namespace std;
using namespace cv;
int main()
{
   
   
	uchar a[16]={
   
   1,0,0,0