Hello,

I have been making use of the OpenCV Java port, but am having significant issues getting the sample code or my own code capturing under Windows.

The library has been a great help, and works great under Mac OS X 10.5.8 with my iSight camera. However, when running under Windows XP, Vista or 7, video capture fails - seemingly regardless of the camera used. I have tried both my code and the provided Java samples on my Macbook under Windows XP in Bootcamp (using both the inbuilt iSight camera and a separate USB camera), and have also tried my home PC running Windows 7 RC (with the same separate USB camera) and a friend's Windows Vista laptop (with an inbuilt Dell webcam). All exhibit the same problem - the window will open, but will just be blank, and the program will hang.

As best as I can tell the problem is that the cv.read() command hangs on the second loop, but I haven't had any luck figuring out why this is.

i have the same issue going on here.

works fine on the mac, but on windows camera capture won´t run. just a fine black screen.

Hi guys, I also tried this code :

Code:

import processing.core.*;
import processing.video.*; 
import hypermedia.video.OpenCV;

OpenCV cv = null;  // OpenCV object

// Initialise Objects
void setup() {
  size( 200, 200 );		  // set frame size
  cv = new OpenCV( this );	 // link OpenCV process to this PApplet
  cv.capture( width, height );   // start video stream
  println(Capture.list());
}

// Display the input camera stream in frame
void draw() {
   cv.read();
  image( cv.image(), 0, 0 );
 
} 

But the frame stays black...whereas with this code :

Code:

import processing.video.*; 
Capture myCapture;

void setup() 
{
  size(200, 200);
  myCapture = new Capture(this, width, height, 30);
}

void captureEvent(Capture myCapture) {
  myCapture.read();
}

void draw() {
  image(myCapture, 0, 0);
} 

It works prefectly...

Edit : I finally find out how to make it.

Same here on Win7. envy44, would you please share how you get through it? Thanks a lot.