#include "stdafx.h"#include <cv.h>
#include <cxcore.h>
#include <highgui.h>int main(int argc, _TCHAR* argv[])
{CvCapture* capture1 = cvCreateCameraCapture( 0 );CvCapture* capture2 = cvCreateCameraCapture( 1 );double w = 320, h = 240;cvSetCaptureProperty ( capture1, CV_CAP_PROP_FRAME_WIDTH,  w );  cvSetCaptureProperty ( capture1, CV_CAP_PROP_FRAME_HEIGHT, h );cvSetCaptureProperty ( capture2, CV_CAP_PROP_FRAME_WIDTH,  w );  cvSetCaptureProperty ( capture2, CV_CAP_PROP_FRAME_HEIGHT, h );cvNamedWindow( "Camera_1", CV_WINDOW_AUTOSIZE );cvNamedWindow( "Camera_2", CV_WINDOW_AUTOSIZE );IplImage* frame1;IplImage* frame2;int n = 2;while(1){frame1 = cvQueryFrame( capture1 );if( !frame1 ) break;cvShowImage( "Camera_1", frame1 );frame2 = cvQueryFrame( capture2 );if( !frame2 ) break;cvShowImage( "Camera_2", frame2 );int key = cvWaitKey(30);if( key == 27 ) break;}cvReleaseCapture( &capture1 );cvReleaseCapture( &capture2 );cvDestroyWindow( "Camera_1" );cvDestroyWindow( "Camera_2" );return 0;
}

/*
Begin work with cvcam, you can select single or multiple cameras in 2 ways.
The first is using a camera selection dialog with cvcamSelectCamera. See an example below:
*/ //Prototype
/*
Pops up a camera(s) selection dialog
Return value - number of cameras selected (0,1 or 2);
Argument: an array of selected cameras numbers
NULL if none selected. Should be released with free() when not needed.
if NULL passed, not used.
*/
CVCAM_API int cvcamSelectCamera(int** out);
Function ThatSelectsCamera()
{ int* out; int nselected = cvcamSelectCamera(&out); if(nselected>0) printf("the 1-st selected camera is camera number %d", out[0]); if(nselected == 2) printf("the 2-nd selected camera is camera number %d", out[1]); free(out); return;
} /*
Note: if you don』t need selected cameras numbers, simply call cvcamSelectCamera(NULL)
Note2: Linux version of cvcam currently has no implementation of cvcamSelectCamera.
*///The second, non-dialog way is to use CVCAM_PROP_ENABLE property like this:

int desiredcamera = 0;//for example
cvcamSetProperty(desiredcamera, CVCAM_PROP_ENABLE,CVCAMTRUE);

#include <cvcam.h>
#include <cv.h>
#include <highgui.h>
#include "stdio.h"
#include <windows.h>void StereoCallback(IplImage *frame1,IplImage *frame2);
void onMouse(int Event,int x,int y,int flags,void *param);IplImage *image1,*image2;char *strleft[4]={"left1.bmp","left2.bmp","left3.bmp","left4.bmp"};
char *strright[4]={"right1.bmp","right2.bmp","right3.bmp","right4.bmp"};void main()
{HWND CaptureWindow1=0;HWND CaptureWindow2=0;//int ncams=cvcamGetCamerasCount(); //獲取攝像頭的個數
//用對話框的形式來選取攝像頭
    int *CameraNumber;int nSelected = cvcamSelectCamera(&CameraNumber);/* //灰色圖像image1=cvCreateImage(cvSize(320,240),IPL_DEPTH_8U,1);image2=cvCreateImage(cvSize(320,240),IPL_DEPTH_8U,1);
*///彩色圖像
    image1=cvCreateImage(cvSize(320,240),IPL_DEPTH_8U,3);image2=cvCreateImage(cvSize(320,240),IPL_DEPTH_8U,3);//初始化兩個攝像頭
        cvNamedWindow("cvcam1 Window",1);CaptureWindow1=(HWND)cvGetWindowHandle("cvcam1 Window");cvcamSetProperty(CameraNumber[0], CVCAM_PROP_ENABLE, CVCAMTRUE);cvcamSetProperty(CameraNumber[0], CVCAM_PROP_RENDER, CVCAMTRUE);cvcamSetProperty(CameraNumber[0], CVCAM_PROP_WINDOW, &CaptureWindow1);cvSetMouseCallback("cvcam1 Window",onMouse,0);cvNamedWindow("cvcam2 Window",1);CaptureWindow2=(HWND)cvGetWindowHandle("cvcam2 Window");cvcamSetProperty(CameraNumber[1], CVCAM_PROP_ENABLE, CVCAMTRUE);cvcamSetProperty(CameraNumber[1], CVCAM_PROP_RENDER, CVCAMTRUE);cvcamSetProperty(CameraNumber[1], CVCAM_PROP_WINDOW, &CaptureWindow2);//讓兩個攝像頭同步
        cvcamSetProperty(CameraNumber[0], CVCAM_STEREO_CALLBACK,(void *)&StereoCallback);    //啟動程序
    cvcamInit();cvcamStart();cvWaitKey(0);cvcamStop();cvcamExit();free(CameraNumber);cvDestroyWindow("cvcam1 Window");cvDestroyWindow("cvcam2 Window");
}void StereoCallback(IplImage* frame1,IplImage *frame2)
{
/*   //把圖像轉換成灰度圖並保存到image中cvCvtColor(frame1,image1,CV_RGB2GRAY);cvCvtColor(frame2,image2,CV_RGB2GRAY);*///拷貝圖像到全局變量image中 該函數這樣用存在問題
    cvCopy(frame1,image1);cvCopy(frame2,image2);
//    image1=cvCloneImage(frame1);
//    image2=cvCloneImage(frame2);//對截取的圖像翻轉
    cvFlip(image1,image1,0);cvFlip(image2,image2,0);
}void onMouse(int Event,int x,int y,int flags,void *param)
{    static int num=0;if(Event==CV_EVENT_LBUTTONDOWN){if(num==4)num=0;//只是固定定義了保存4張圖片，為了不讓程序非法而設置的復原
            cvcamPause();//圖像保存
        cvSaveImage(strleft[num],image1);    cvSaveImage(strright[num],image2);//    cvSaveImage("left.bmp",image1);//    cvSaveImage("right.bmp",image2);
}if(Event==CV_EVENT_RBUTTONDOWN){cvcamResume();num++;}
}

//
// Multiple Cameras Capture using DirectShow
// Author: Yuhua Zou
// Thanks to:
//      Shiqi Yu (shiqi.yu@gmail.com)
//        HardyAI@OpenCV China
//        flymanbox@OpenCV China (for his contribution to function CameraName, and frame width/height setting)
// Last modification: October 8, 2009
////
// 使用說明：
//  在 VC6 開發環境下的使用說明：
//   1. 將CameraDS.h CameraDS.cpp以及目錄DirectShow復制到你的項目中
//   2. 菜單 Project->Settings->Settings for:(All configurations)->C/C++->Category(Preprocessor)->Additional include directories
//      設置為 DirectShow/Include
//   3. 菜單 Project->Settings->Settings for:(All configurations)->Link->Category(Input)->Additional library directories
//      設置為 DirectShow/Lib
//  在 VS2005/2008 開發環境下的使用說明：
//   1. 將CameraDS.h CameraDS.cpp復制到你的項目中
//   2. 將DirectShow復制到你的opencv根目錄下，菜單 工具->選項->項目和解決方案->vc++目錄，把..(你的opencv安裝目錄)/DirectShow/Include添加到
//     「引用文件」中$(VCInstallDir)PlatformSDK/include和$(FrameworkSDKDir)include下面任意位置
//   3. 菜單 工具->選項->項目和解決方案->vc++目錄，把..(你的opencv安裝目錄)/DirectShow/Lib添加到「庫文件」下面。也可參考使用說明3。
//

#include "stdafx.h"
#include "camerads.h"
#include <cv.h>
#include <cxcore.h>
#include <highgui.h>
#include <stdio.h>
#include <stdarg.h>
#include <time.h>// 單窗口顯示多幅圖像的函數
void cvShowMultiImages(char* title, int nArgs, ...)
{// 略，詳見學習筆記（5）
}int main( int argc, char** argv )
{int cam_count;//僅僅獲取攝像頭數目
    cam_count = CCameraDS::CameraCount();printf("There are %d cameras./n", cam_count);//獲取所有攝像頭的名稱
    for(int i=0; i < cam_count; i++){char camera_name[1024];  int retval = CCameraDS::CameraName(i, camera_name, sizeof(camera_name) );if(retval >0)printf("Camera #%d's Name is '%s'./n", i, camera_name);elseprintf("Can not get Camera #%d's name./n", i);}if(cam_count==0)return -1;// 創建2個攝像頭類
    CCameraDS camera1;CCameraDS camera2;    //打開第一個攝像頭//if(! camera.OpenCamera(0, true)) //彈出屬性選擇窗口
    if(! camera1.OpenCamera(0, false, 320,240)) //不彈出屬性選擇窗口，用代碼制定圖像寬和高
    {fprintf(stderr, "Can not open camera./n");return -1;}//打開第二個攝像頭
    camera2.OpenCamera(1, false, 320,240);cvNamedWindow("Multiple Cameras");// 初始化在子圖像中顯示字符的字體格式
    CvFont tFont;cvInitFont(&tFont,  CV_FONT_HERSHEY_COMPLEX, 0.5f,0.7f,0,1,8);char cam1str[] = "Camera #1";char cam2str[] = "Camera #2";// 為讀取系統時間信息分配內存
    char timestr[25];memset(timestr, 0, 25 * sizeof(char));   while(1){//獲取一幀
        IplImage *pFrame1 = camera1.QueryFrame();IplImage *pFrame2 = camera2.QueryFrame();// 獲取當前幀的灰度圖
        IplImage* frame_gray_1 = cvCreateImage(cvGetSize(pFrame1),pFrame1->depth,1);IplImage* frame_gray_2 = cvCreateImage(cvGetSize(pFrame2),pFrame2->depth,1);cvCvtColor(pFrame1,frame_gray_1,CV_RGB2GRAY);cvCvtColor(pFrame2,frame_gray_2,CV_RGB2GRAY);// 對灰度圖像進行Canny邊緣檢測// 然後將圖像通道數改為三通道
        IplImage* frame_canny_1 = cvCreateImage(cvGetSize(pFrame1),pFrame1->depth,1);IplImage* frame_canny_2 = cvCreateImage(cvGetSize(pFrame2),pFrame2->depth,1);IplImage* frame1 = cvCreateImage(cvGetSize(pFrame1),pFrame1->depth,pFrame1->nChannels);IplImage* frame2 = cvCreateImage(cvGetSize(pFrame2),pFrame2->depth,pFrame2->nChannels);cvCanny(frame_gray_1,frame_canny_1,20,75,3);cvCanny(frame_gray_2,frame_canny_2,20,75,3);cvCvtColor(frame_canny_1,frame1,CV_GRAY2BGR);cvCvtColor(frame_canny_2,frame2,CV_GRAY2BGR);// 獲取系統時間信息
        time_t rawtime; struct tm* timeinfo; rawtime = time( NULL ); timeinfo = localtime( &rawtime ); char* p = asctime( timeinfo );// 字符串 p 的第25個字符是換行符 '/n'// 但在子圖像中將亂碼顯示// 故僅讀取 p 的前 24 個字符
        for (int i = 0; i < 24; i++){timestr[i] = *p;p++;}p = NULL;// 在每個子圖像上顯示攝像頭序號以及系統時間信息
        cvPutText( pFrame1, cam1str, cvPoint(95,15), &tFont,  CV_RGB(255,0,0) );cvPutText( pFrame2, cam2str, cvPoint(95,15), &tFont,  CV_RGB(255,0,0) );cvPutText( frame1,  cam1str, cvPoint(95,15), &tFont,  CV_RGB(255,0,0) );cvPutText( frame2,  cam2str, cvPoint(95,15), &tFont,  CV_RGB(255,0,0) );cvPutText( pFrame1, timestr, cvPoint(5,225), &tFont,  CV_RGB(255,0,0) );cvPutText( pFrame2, timestr, cvPoint(5,225), &tFont,  CV_RGB(255,0,0) );cvPutText( frame1,  timestr, cvPoint(5,225), &tFont,  CV_RGB(255,0,0) );cvPutText( frame2,  timestr, cvPoint(5,225), &tFont,  CV_RGB(255,0,0) );// 顯示實時的攝像頭視頻
        cvShowMultiImages( "Multiple Cameras", 4, pFrame1, pFrame2, frame1, frame2 );//cvWaitKey(33);
        int key = cvWaitKey(33);if( key == 27 ) break;cvReleaseImage(&frame1);cvReleaseImage(&frame2);cvReleaseImage(&frame_gray_1);cvReleaseImage(&frame_gray_2);cvReleaseImage(&frame_canny_1);  cvReleaseImage(&frame_canny_2); }camera1.CloseCamera(); //可不調用此函數，CCameraDS析構時會自動關閉攝像頭
    camera2.CloseCamera();cvDestroyWindow("Multiple Cameras");return 0;
}