/*程序名稱：laplace.c功能：從攝像頭或者AVI文件中得到視頻流，對視頻流進行邊緣檢測，并輸出結果。*/#include "cv.h"#include "highgui.h"    #include <ctype.h>#include <stdio.h>
int main( int argc, char** argv ){    IplImage* laplace = 0;    IplImage* colorlaplace = 0;    IplImage* planes[3] = { 0, 0, 0 };  // 多個圖像面    CvCapture* capture = 0;        // 下面的語句說明在命令行執行程序時，如果指定AVI文件，那么處理從	// AVI文件讀取的視頻流，如果不指定輸入變量，那么處理從攝像頭獲取	// 的視頻流if( argc == 1 || (argc == 2 && strlen(argv[1]) == 1 && isdigit(argv[1][0])))        capture = cvCaptureFromCAM( argc == 2 ? argv[1][0] - '0' : 0 );    else if( argc == 2 )        capture = cvCaptureFromAVI( argv[1] );     if( !capture )    {        fprintf(stderr,"Could not initialize capturing...\n");        return -1;    }            cvNamedWindow( "Laplacian", 0 );	// 循環捕捉，直到用戶按鍵跳出循環體    for(;;)    {        IplImage* frame = 0;        int i;        frame = cvQueryFrame( capture );        if( !frame )            break;        if( !laplace )        {            for( i = 0; i < 3; i++ )                planes[i] = cvCreateImage( cvSize(frame->width,frame->height), 8, 1 );laplace = cvCreateImage( cvSize(frame->width,frame->height), IPL_DEPTH_16S, 1 );            colorlaplace = cvCreateImage( cvSize(frame->width,frame->height), 8, 3 );        }        cvCvtPixToPlane( frame, planes[0], planes[1], planes[2], 0 );        for( i = 0; i < 3; i++ )        {            cvLaplace( planes[i], laplace, 3 ); // 3: aperture_size            cvConvertScaleAbs( laplace, planes[i], 1, 0 );  // planes[] = ABS(laplace)        }        cvCvtPlaneToPix( planes[0], planes[1], planes[2], 0, colorlaplace );        colorlaplace->origin = frame->origin;        cvShowImage("Laplacian", colorlaplace );        if( cvWaitKey(10) >= 0 )            break;    }    cvReleaseCapture( &capture );    cvDestroyWindow("Laplacian");    return 0;}