Good morning,

     I'm trying to create a small program that allows you to capture frames from 2 to 2 seconds of a web camera in real time.     My code is working, the problem is to record the images, only one image is recorded.     My idea was to have several files stored in the directory of images, with the name years months days hours min sec     It is possible to do this with cvSaveImage, or is otherwise more effective to do this.

sprintf(file,"%s","/home/ricardo/Imagens/"); sprintf(file,"%d%d%d_%d%d%d.pgm\n", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); cvSaveImage(file, frame,0);

include <stdio.h>

include <stdlib.h>

include <opencv cv.h="">

include <opencv highgui.h="">

include<time.h>

int main() {

char file[256];

time_t mytime; mytime = time(NULL); struct tm tm = *localtime(&mytime);

printf("now: %d-%d-%d %d:%d:%d\n", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); sprintf(file,"%d%d%d_%d%d%d.pgm\n", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); printf("%s",file); getchar();

CvCapture* capture = cvCaptureFromCAM( CV_CAP_ANY ); if ( !capture ) { fprintf( stderr, "ERROR: capture is NULL \n" ); getchar(); return -1; } // Create a window in which the captured images will be presented cvNamedWindow( "mywindow", CV_WINDOW_AUTOSIZE ); // Show the image captured from the camera in the window and repeat

while ( 1 ) { // Get one frame IplImage* frame = cvQueryFrame(capture); if ( !frame ) { fprintf( stderr, "ERROR: frame is null...\n" ); getchar(); break; } cvShowImage( "mywindow", frame ); sprintf(file,"%s","/home/ricardo/Imagens/"); sprintf(file,"%d%d%d_%d%d%d.pgm\n", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); cvSaveImage(file, frame,0);

 //sleep(2);
 // Do not release the frame!
 //If ESC key pressed, Key=0x10001B under OpenCV 0.9.7(linux version),
 //remove higher bits using AND operator
 if ( (cvWaitKey(10) & 255) == 27 ) break;

} // Release the capture device housekeeping cvReleaseCapture( &capture ); cvDestroyWindow( "mywindow" ); return 0; }

Good morning,

     I'm trying to create a small program that allows you to capture frames from 2 to 2 seconds of a web camera in real time.     My code is working, the problem is to record the images, only one image is recorded.     My idea was to have several files stored in the directory of images, with the name years months days hours min sec     It is possible to do this with cvSaveImage, or is otherwise more effective to do this.

sprintf(file,"%s","/home/ricardo/Imagens/"); sprintf(file,"%d%d%d_%d%d%d.pgm\n", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); cvSaveImage(file, frame,0);

include <stdio.h>stdio.h

include <stdlib.h>

include <opencv cv.h="">

include <opencv highgui.h="">

include<time.h>

int main() {

char file[256];

time_t mytime; mytime = time(NULL); struct tm tm = *localtime(&mytime);

printf("now: %d-%d-%d %d:%d:%d\n", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec); tm.tm_sec);

sprintf(file,"%d%d%d_%d%d%d.pgm\n", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);

printf("%s",file);

getchar();

CvCapture* capture = cvCaptureFromCAM( CV_CAP_ANY ); if ( !capture ) { fprintf( stderr, "ERROR: capture is NULL \n" ); getchar(); return -1; }

cvNamedWindow( "mywindow", CV_WINDOW_AUTOSIZE ); while ( 1 ) { IplImage* frame = cvQueryFrame(capture); if ( !frame ) {

   fprintf( stderr, "ERROR: frame is null...\n" );
   getchar();
   break;
 }
 cvShowImage( "mywindow", frame );
 sprintf(file,"%s","/home/ricardo/Imagens/");
 sprintf(file,"%d%d%d_%d%d%d.pgm\n", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
printf("%s",file);
getchar();
 
CvCapture* capture = cvCaptureFromCAM( CV_CAP_ANY );
   if ( !capture ) {
     fprintf( stderr, "ERROR: capture is NULL \n" );
     getchar();
     return -1;
   }
   // Create a window in which the captured images will be presented
   cvNamedWindow( "mywindow", CV_WINDOW_AUTOSIZE );
   // Show the image captured from the camera in the window and repeat
 
while ( 1 ) {
     // Get one frame
     IplImage* frame = cvQueryFrame(capture);
     if ( !frame ) {
       fprintf( stderr, "ERROR: frame is null...\n" );
       getchar();
       break;
     }
     cvShowImage( "mywindow", frame );
     sprintf(file,"%s","/home/ricardo/Imagens/");
     sprintf(file,"%d%d%d_%d%d%d.pgm\n", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
     cvSaveImage(file, frame,0);
 
frame,0);

 //sleep(2);
 // Do not release the frame!
 //If ESC key pressed, Key=0x10001B under OpenCV 0.9.7(linux version),
 //remove higher bits using AND operator
 if ( (cvWaitKey(10) & 255) == 27 ) break;
 
}
// Release the capture device housekeeping
cvReleaseCapture( &capture );
cvDestroyWindow( "mywindow" );
return 0;
}