一、问题描述

调用OpenCV中函数，将图像变换到HSV颜色空间，并将H、S、V三个颜色通道分别用灰度图显示

二、示例代码

#include <opencv2/opencv.hpp>
using namespace cv;
using namespace std;
Mat srcImage1, dstImage1, dstImage2;
String imagePath = "C:/Users/admin/Pictures/1.2.png";
int main()
{//imaread(path,[flag])srcImage1 = imread(imagePath, 1);imshow("原图", srcImage1);cvtColor(srcImage1, dstImage1, COLOR_RGB2HSV);/*Hue（色调、色相）Saturation（饱和度、色彩纯净度）Value（明度）*/imshow("HSV",dstImage1);vector<Mat> channels;split(srcImage1, channels);//分离HSV//保留channels[0]channels[1] = 0;channels[2] = 0;merge(channels, dstImage2);imshow("V", dstImage2);cvtColor(dstImage2, dstImage2, COLOR_RGB2GRAY);;imshow("V2GRAY", dstImage2);split(srcImage1, channels);//分离HSV//保留channels[1]channels[0] = 0;channels[2] = 0;merge(channels, dstImage2);imshow("S", dstImage2);cvtColor(dstImage2, dstImage2, COLOR_RGB2GRAY);;imshow("S2GRAY", dstImage2);split(srcImage1, channels);//分离HSV//保留channels[2]channels[0] = 0;channels[1] = 0;merge(channels, dstImage2);imshow("H", dstImage2);cvtColor(dstImage2, dstImage2, COLOR_RGB2GRAY);;imshow("H2GRAY", dstImage2);waitKey(0);return 0;
}

三、运行结果

原图与转换后的HSV

 各通道与之对应的灰度图