Filter Color Camera

#include <opencv2/opencv.hpp>
#include<iostream>
#include<string>
using namespace cv;
using namespace std;
Mat img;
//灰度值归一化
Mat bgr;
//HSV图像
Mat hsv;
//色相
int hmin = 26;
int hmin_Max = 360;
int hmax = 34;
int hmax_Max = 180;
//饱和度
int smin = 43;
int smin_Max = 255;
int smax = 255;
int smax_Max = 255;
//亮度
int vmin = 46;
int vmin_Max = 255;
int vmax = 255;
int vmax_Max = 255;
//显示原图的窗口
string windowName = "src";
//输出图像的显示窗口
string dstName = "dst";
//输出图像
Mat dst;
//回调函数
void callBack(int, void*)
{
    //输出图像分配内存
    dst = Mat::zeros(img.size(), img.type());
    //掩码
    Mat mask;
    inRange(hsv, Scalar(hmin, smin, vmin), Scalar(hmax, smax, vmax), mask);
    //掩模到原图的转换
    for (int r = 0; r < bgr.rows; r++)
    {
        for (int c = 0; c < bgr.cols; c++)
        {
            if (mask.at<uchar>(r, c) == 255)
            {
                dst.at<Vec3b>(r, c) = bgr.at<Vec3b>(r, c);
            }
        }
    }
    //输出图像
    imshow(dstName, dst);

}


int main()
{

    VideoCapture capture(0);


    //循环显示每一帧
    while (1)
    {
        capture >> img;
        imshow(windowName, img);
        bgr = img.clone();
        //颜色空间转换
        cvtColor(bgr, hsv, CV_BGR2HSV);
        
        //定义输出图像的显示窗口
        namedWindow(dstName, WINDOW_GUI_EXPANDED);
        //调节色相 H
        createTrackbar("hmin", dstName, &hmin, hmin_Max, callBack);
        createTrackbar("hmax", dstName, &hmax, hmax_Max, callBack);
        //调节饱和度 S
        createTrackbar("smin", dstName, &smin, smin_Max, callBack);
        createTrackbar("smax", dstName, &smax, smax_Max, callBack);
        //调节亮度 V
        createTrackbar("vmin", dstName, &vmin, vmin_Max, callBack);
        createTrackbar("vmax", dstName, &vmax, vmax_Max, callBack);
        callBack(0, 0);
        


        

        if (waitKey(30) >= 0)break;//延时30ms

    }
    return 0;
}