zoukankan      html  css  js  c++  java
  • opencv显示鼠标所在位置的rgb值

    #include"highgui.h"
    #include"cv.h"
    #include"cxcore.h"
    #include<stdlib.h>
    void dispplex(IplImage*img,char*var1,char*var2 , char* var3,int x,int y)
    {
    	CvFont font;
    	cvInitFont(&font,CV_FONT_HERSHEY_SCRIPT_COMPLEX,1.0,1.0);
    	cvPutText(img,var1,cvPoint(x,y),&font,cvScalar(255,255,0));
    	cvPutText(img,var2,cvPoint(x+100,y),&font,cvScalar(255,255,0));
    	cvPutText(img,var3,cvPoint(x+200,y),&font,cvScalar(255,255,0));
    	cvShowImage("demo",img);
    
    }
    void cvmovecallback(int event,int x,int y,int flags,void*para)
    {
    	IplImage*img=(IplImage*)para;
    	switch(event){
    	case CV_EVENT_LBUTTONDOWN:
    		{
    			uchar *rgb;
    			rgb=(uchar*)(img->imageData+y*(img->widthStep)+(img->nChannels)*x);
    			char var1[5];
    				itoa((int)rgb[1],var1,10);
    			char var2[5];
    				itoa((int)rgb[2],var2,10);
    				char var3[5];
    				itoa((int)rgb[3],var3,10);
    			dispplex(img,var1,var2,var3,x,y);
    		break;	
    		}
    	default:break;
    	}
    }
    int main(int agrc,char**argv)
    {
    	IplImage *img=cvLoadImage("adc.jpg");
    	int x=0;
    	int y=0;
    	cvNamedWindow("demo");
    	cvSetMouseCallback("demo",cvmovecallback,(void*)img);
    	cvShowImage("demo",img);
    
    	cvWaitKey(0);
    
    }


  • 相关阅读:
    VirtualApp
    python安装包遇到问题解决
    NMS_非极大值抑制的作用
    解释残差结构的有效性
    使用tcpdump命令抓取sql
    linux进程绑定cpu内核
    查询表空间占用情况
    数据库表分区
    Windows下如何使用ab命令做并发测试
    TCP协议
  • 原文地址:https://www.cnblogs.com/james1207/p/3262843.html
Copyright © 2011-2022 走看看