[opencv]Scalarc类 常用颜色阈值总结

    Mat hsv;
    cvtColor(s_mat,hsv,COLOR_BGR2HSV);
　　//注:inrange的图像结果类型是二值化的
    //黑色
    Mat black;
    inRange(hsv,Scalar(0,0,0), Scalar(180,255,46),black);
    
    //灰色
    Mat  gray;
    inRange(hsv,Scalar(0,0,46), Scalar(180,43,220),gray);

    //白色
    Mat white;
    inRange(hsv,Scalar(0,0,221), Scalar(180,30,255),white);
    
    //红色
    Mat red;
    inRange(hsv,Scalar(0,43,46), Scalar(10,255,255),red);

    //橙色
    Mat orange;
    inRange(hsv,Scalar(11,43,46), Scalar(25,255,255),orange);

    //黄色
    Mat yellow;
    inRange(hsv,Scalar(26,43,46), Scalar(34,255,255),yellow);

    //绿色
    Mat green;
    inRange(hsv,Scalar(35,43,46), Scalar(77,255,255),green);

    //青色
    Mat cyan;
    inRange(hsv,Scalar(78,43,46), Scalar(99,255,255),cyan);

    //蓝色
    Mat blue;
    inRange(hsv,Scalar(100,43,46), Scalar(124,255,255),blue);

    //紫色
    Mat violet;
    inRange(hsv,Scalar(125,43,46), Scalar(155,255,255),violet);