Hey guys, I'm using OpenCV to get an image from my webcam and then run it through code. It's supposed to be live feed, and I got this code from an online tutorial (somewhat revised):
#include <stdio.h>
#include <stdlib.h>
#include <opencv/cvaux.h>
#include <opencv/highgui.h> //opencv libraries
#include <opencv/cxcore.h>
CvCapture* camCapture; //opencv class for retrieving image from external camera
IplImage* origImage; //initialization of binary image
int main()
{
camCapture = cvCaptureFromCAM(0); //automatically syncs with first installed camera;
//for a second camera, argument would be '1'.
printf("Your Error Messages Work."); //make sure print function works
if(camCapture == NULL) //if there is no image coming from the synced camera, print error message
{
printf("Dude, your camera's not working.");
getchar();
}
cvNamedWindow("OK", 3); //create a window box named "OK", with 3 changeable values (R, G, B);
//second param would be 2 for grayscale, 1 for black/white
while(1) //loop forever
{
origImage = cvQueryFrame(camCapture); //the binary image is the current frame from the camera
if(origImage==NULL) //if the image is blank, print error message
{
printf("Dude, I'm not getting an image.");
getchar();
break;
}
cvShowImage("OK", origImage); //show the image in the window named "OK"
}
}
Here's what happens:
1). Regular dialog box comes up and prints: "Your Error Messages Work."
2). The light on my webcam turns on like its recording.
3). An alternate window appears named "OK".
4). The entire "OK" window turns slate-gray and is forever "loading". No image appears.
5). No error messages show up for code or image being null.
Has anyone worked with opencv before? Is it a problem with my webcam or with my code?
Thanks in advance!
--Ben
