04 cvRectangle 正方形的外框

penCV 的畫連續畫線指令

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/opencv.hpp>
#include <iostream>
#include <string.h>
#include <fstream>
using namespace cv;
int main(int argc,char **argv)

 int width,height;
 if(argc<=1)
 
 std::cout<<"Error:Please Load a picture!"<<std::endl;
 return 0;
 
 
 IplImage *image;
 //建立視窗
 namedWindow("image",CV_WINDOW_AUTOSIZE);
 
 //讀取圖片
 image=cvLoadImage(argv[1]);
 width=image->width;
 height=image->height;
 
 // 畫出正方形的外框
 cvRectangle(image,
 cvPoint((width/4),(height/4)),
 cvPoint((width/4)*3,(height/4)*3),
 CV_RGB(255,0,0),3,CV_AA,1);
 

 cvShowImage("image",image);
 waitKey(0);
 
 cvDestroyAllWindows();
 cvReleaseImage(&image);
 system("pause");
 return 0;

04 cvRectangle　正方形的外框