阿洲程式天地

 
#include <cv.h>
#include <highgui.h>
#include <stdio.h>
#include <vector>

記得在while迴圈要設條件break跳出迴圈，否則avi檔無法開啟
#include <cv.h>
#include <highgui.h>
#include <stdio.h>

int main()
{
    CvCapture *capture;
    IplImage *frame;

    capture=cvCreateCameraCapture(0);
    cvNamedWindow("Webcam",0);

    CvVideoWriter *writer;
    char AviFileName[]="Output.avi";
    int AviForamt = -1;
    int FPS = 30;
    CvSize AviSize = cvSize(640,480);
    writer=cvCreateVideoWriter(AviFileName,AviForamt,FPS,AviSize);

    while(true)
    {
        frame = cvQueryFrame(capture);
        cvWriteFrame(writer,frame);
        if(cvWaitKey(20)>0)     break;
    }

    cvReleaseCapture(&capture);
    cvReleaseVideoWriter(&writer);
    cvDestroyWindow("Webcam");
}

try  {     
  IplImage* gray = NULL;  
  IplImage* edge = NULL;  
  gray = cvCreateImage(cvSize(IMAGE_WIDTH,IMAGE_HEIGHT),IPL_DEPTH_8U,1);  
  edge = cvCreateImage(cvSize(IMAGE_WIDTH,IMAGE_HEIGHT),IPL_DEPTH_8U,1);  
  cvCvtColor(img,gray,CV_BGR2GRAY);  
    //邊緣檢測  
  cvCanny(gray,edge,30,100,3);  
  cvCvtColor(edge,img,CV_GRAY2BGR);  
    //保存结果  
  cvCopyImage(img,m_Ipl);  
  cvReleaseImage(&gray);  
  cvReleaseImage(&edge);  
}  
catch (cv::Exception& e)  {         
  const char* err_msg = e.what();  
    //console輸出  std::cout << "exception caught: " << err_msg << std::endl;   
  CString a;  
  a+= err_msg;  
  AfxMessageBox(a);       //MFC输出  
}

1、畫線：
#include <cv.h>
#include <highgui.h>
IplImage *ShowImage;
CvPoint BeginPoint,EndPoint;
CvScalar Color;
int Thickness;
int main() {
    CvSize ImageSize = cvSize(1000,700);
    ShowImage= cvCreateImage(ImageSize,IPL_DEPTH_8U,3);
    BeginPoint= cvPoint(100,100);
    EndPoint= cvPoint(800,600);
    Color=CV_RGB(255,0,0);
    Thickness=3;
    cvLine(ShowImage,BeginPoint,EndPoint,Color,Thickness);
    cvNamedWindow("cvLineTest",1);
    cvShowImage("cvLineTest",ShowImage);
    cvWaitKey(0);
}

顯現攝影機影像：
#include <cv.h>
#include <highgui.h>
#include <stdio.h>

int main()
{
    CvCapture *capture;
    IplImage *ShowImage;

    capture=cvCreateCameraCapture(0);
    cvNamedWindow("Webcam",0);

    while(true)
    {
        ShowImage= cvQueryFrame(capture);
        cvShowImage("Webcam",frame);
        if(cvWaitKey(20)>0)     break;(寫在opencv的視窗才需要此函式)
    }

    cvReleaseCapture(&capture);
    cvDestroyWindow("Webcam");
}

1、圖片開啟：
#include <stdio.h>
#include <cv.h>
#include <highgui.h>
char *FileName="Test.jpg";(圖片需與執行檔放在同個資料夾，否則須註明路徑)
IplImage *Image1;
int main() {
    Image1 = cvLoadImage(FileName,0);  (灰階形式參數0，彩色形式參數1)
    cvNamedWindow("Show Image",0);
    cvMoveWindow("Show Image",0,0);
    cvResizeWindow("Show Image",300,400);
    cvShowImage("Show Image",Image1);(顯現圖片在視窗上)
    cvWaitKey(0);(如果要把圖顯現在opencv創立的視窗上，必須要有此函式)
    cvDestroyWindow("Show Image");
    cvReleaseImage(&Image1);
}