opencv在图像上显示移动鼠标对应的RGB像素值

#include <opencv2/core/core.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/highgui/highgui.hpp>
#include<opencv2/highgui.hpp>
#include <iostream>
#include <stdio.h>
#include<vector>

using namespace std;
using namespace cv;

void mouseHandler(int event, int x, int y, int flags, void *p)
{
	IplImage *img0, *img1;
	img0 = (IplImage*)p;
	img1 = cvCloneImage(img0);
	CvFont font;
	uchar *ptr;
	char label[20];
	cvInitFont(&font, CV_FONT_HERSHEY_PLAIN, 0.8, 0.8, 0, 1, 8);
	if (event == CV_EVENT_LBUTTONDOWN)
	{
		ptr = cvPtr2D(img1, y, x, NULL);
		sprintf(label, "(%d, %d, %d)", ptr[0], ptr[1], ptr[2]);
		cvRectangle(img1, cvPoint(x, y - 12), cvPoint(x + 100, y + 4),
			CV_RGB(255, 0, 0), CV_FILLED, 8, 0);
		cvPutText(img1, label, cvPoint(x, y), &font, CV_RGB(255, 255, 255));
		cvShowImage("src", img1);
	}
	
}

int main()
{
	IplImage *src;
	src = cvLoadImage("111.jpg");
	assert(src);
	cvNamedWindow("src", 1);
	cvSetMouseCallback("src", mouseHandler, (void*)src);
	mouseHandler(0, 0, 0, 0, src);
	cvShowImage("src", src);
	cvWaitKey(0);
	return 0;
}

标签：src,int,ptr,像素,opencv,RGB,img1,include,CV
来源： https://blog.csdn.net/Vertira/article/details/123589303