Mat中实际数据是如何保存的
关于opencv中的颜色模型转换之CV_BGR2HSV
还有一个红眼程序:基于HSI颜色模型实现去除照片的“红眼现象”
int main(void)
{ Mat img1 = imread("D:/picture/images/baboon1.jpg",0);//灰度图像
cout<<img1.rows<<endl;
cout<<img1.cols<<endl;
cout<<img1.size[0]<<endl;//与img1.rows相等
cout<<(int)img1.at<uchar>(1,2)<<endl;//(1,2)点的灰度值
cout<<(int)(*(img1.data + img1.step[0] * 1 + img1.step[1] * 2))<<endl;//(1,2)点的灰度值
Mat img2 = imread("D:/picture/images/baboon1.jpg");//彩色图像
cout<<(int)img2.at<Vec3b>(1,2)[1]<<endl;//(1,2)点的G分量
cout<<(int)(*(img2.data + img2.step[0] * 1 + img2.step[1] * 2 + sizeof(uchar)))<<endl;//(1,2)点的G分量
return 0;
}