#include <cv.h> #include <highgui.h> #include <stdio.h> #include <stdarg.h> #include <time.h> void cvShowManyImages(char* title, int nArgs, ...){ IplImage *img; IplImage *DispImage; int size; int i; int m, n; int x, y; int w, h; // scale - How much we have to resize the image float scale; int max; // If the number of arguments is lesser than 0 or greater than 12 // return without displaying w = 2; h = 2; size = 300; /** if(nArgs <= 0) { printf("Number of arguments too small.... "); return; } else if(nArgs > 12) { printf("Number of arguments too small.... "); return; } // Determine the size of the image, // and the number of rows/cols // from number of arguments else if (nArgs == 1) { w = h = 1; size = 300; } else if (nArgs == 2) { w = 2; h = 1; size = 300; } else if (nArgs == 3 || nArgs == 4) { w = 2; h = 2; size = 300; } else if (nArgs == 5 || nArgs == 6) { w = 3; h = 2; size = 200; } else if (nArgs == 7 || nArgs == 8) { w = 4; h = 2; size = 200; } else { w = 4; h = 3; size = 150; } */ // Create a new 3 channel image DispImage = cvCreateImage( cvSize(100 + size*w, 60 + size*h), 8, 3 ); // Used to get the arguments passed va_list args; va_start(args, nArgs); // Loop for nArgs number of arguments // for (i = 0, m = 20, n = 20; i < nArgs; i++, m += (20 + size)) { for (i = 0, m = 20, n = 20; i < nArgs; i++, m += (20 + size)) { // Get the Pointer to the IplImage img = va_arg(args, IplImage*); // Check whether it is NULL or not // If it is NULL, release the image, and return if(img == 0) { printf("Invalid arguments"); cvReleaseImage(&DispImage); return; } // Find the width and height of the image x = img->width; y = img->height; // Find whether height or width is greater in order to resize the image max = (x > y)? x: y; // Find the scaling factor to resize the image scale = (float) ( (float) max / size ); // Used to Align the images if( i % w == 0 && m!= 20) { m = 20; n+= 20 + size; } // Set the image ROI to display the current image cvSetImageROI(DispImage, cvRect(m, n, (int)( x/scale ), (int)( y/scale ))); // Resize the input image and copy the it to the Single Big Image cvResize(img, DispImage); // Reset the ROI in order to display the next image cvResetImageROI(DispImage); } // Create a new window, and show the Single Big Image //cvNamedWindow( title, 1 ); cvShowImage( title, DispImage); /*cvWaitKey(0);*/ //cvDestroyWindow(title); // End the number of arguments va_end(args); // Release the Image Memory cvReleaseImage(&DispImage); } int main(int argc,char **argv) { CvCapture *capture; // int i=0; capture=cvCreateFileCapture("E:\Videos\xx.avi"); IplImage *frame; cvNamedWindow("video",1); cvResizeWindow("video",700,660); //CvFont timeFont,timeFont1; // cvInitFont(&timeFont,CV_FONT_HERSHEY_COMPLEX,0.5f,0.5f,0,1,8); // cvInitFont(&timeFont1,CV_FONT_HERSHEY_COMPLEX,0.5f,0.5f,0,1,8); // char time1[25]; // memset(time1,0,25*sizeof(char)); while (1) { frame=cvQueryFrame( capture ); if (!frame) { break; } /** IplImage *frame_not=cvCreateImage(cvGetSize(frame),frame->depth,frame->nChannels); cvNot(frame,frame_not); */ // time_t rawtime; // struct tm * timeinfo; // time ( &rawtime ); // timeinfo = localtime ( &rawtime ); // char *p=asctime(timeinfo); //数组p的第25个字符为' ',在图像上显示时为乱码，这里取其前24个字符显示在图像上 /** for (i=0;i<24;i++) { time1[i]=*p; p++; } p=NULL; */ IplImage *frame_gray=cvCreateImage(cvGetSize(frame),frame->depth,1); IplImage *frame1=cvCreateImage(cvGetSize(frame),frame->depth,frame->nChannels); IplImage *frame_canny=cvCreateImage(cvGetSize(frame),frame->depth,1); IplImage *frame2=cvCreateImage(cvGetSize(frame),frame->depth,frame->nChannels); cvCvtColor(frame,frame_gray,CV_RGB2GRAY); cvCvtColor(frame_gray,frame1,CV_GRAY2BGR); cvCanny(frame_gray,frame_canny,20,75,3); cvCvtColor(frame_canny,frame2,CV_GRAY2BGR); // cvPutText(frame,time1,cvPoint(0,15),&timeFont,CV_RGB(255,0,0)); //cvPutText(frame1,time1,cvPoint(0,15),&timeFont,CV_RGB(255,0,0)); // cvPutText(frame2,time1,cvPoint(0,15),&timeFont1,CV_RGB(255,0,0)); // cvPutText(frame_not,time1,cvPoint(0,15),&timeFont1,CV_RGB(255,0,0)); // cvShowManyImages("video",4,frame,frame_not,frame1,frame2); cvShowManyImages("video",3,frame,frame1,frame2); cvWaitKey(33); // cvReleaseImage(&frame_not); cvReleaseImage(&frame1); cvReleaseImage(&frame_gray); cvReleaseImage(&frame2); cvReleaseImage(&frame_canny); } cvDestroyWindow("video"); cvReleaseCapture(&capture); return 0; }
转载自：http://www.opencv.org.cn/forum.php?mod=viewthread&tid=7996&extra=&page=1