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Index › Programming Questions & Help › Programs › Live Webcam Feeds
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Live Webcam Feeds (Read 1479 times)
ProductLM
Live Webcam Feeds
Nov 23rd, 2009, 5:46am  
Hi,

for my final year uni project I am wanting to set up about 3 live webcam feeds,  switching between them using physical switches & view them on a single remote screen. Does anybody know if processing can do this & how?

Thanks
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Cedric
Re: Live Webcam Feeds
Reply #1 - Nov 23rd, 2009, 5:57am  
yes this could be done. As long as you can manage to get 3 webcams on your computer you can load them into processing and simply change which one to show.

these guys got 36/72 cams working, so its definitely possible (http://processing.org/discourse/yabb2/num_1258719941_.html
3 should be much easier though Smiley

for the physical switch some might suggest to go with arduino but this is way to much i would say. You can easily do this for an installation by hacking an old keyboard. Soldering your switch to a special key and then simply make your programm react to this special key pressed.
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ProductLM
Re: Live Webcam Feeds
Reply #2 - Nov 23rd, 2009, 8:12am  
Cool - could it work with feeds from webcams attached to the computer & feeds from the web? For some reason processings not recognising the webcam I bought to test it out... tried the capture list too (I'm new to this so I've probably done or not done something!).

As for the switches, I might use arduino just because they are a bit different - when you lift up a spyhole cover it will break the circuit & activate the corresponding feed.

Can the feeds be displayed on a remote lcd screen, or will it just be the computer screen?

Thanks for your help  Smiley
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Cedric
Re: Live Webcam Feeds
Reply #3 - Nov 23rd, 2009, 8:29am  
i would say you can still use a keyboard hack. just change the way it behaves when a key is pressed or in this case released. http://processing.org/reference/keyReleased_.html

for the LCD question i would say, as long as you can connect it to your PC you can run your processing sketch on it. Have seen people doing that but cant tell you exactly how.
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ProductLM
Re: Live Webcam Feeds
Reply #4 - Nov 23rd, 2009, 1:16pm  
I've got the webcam working & have started using the key release programme, but I'm having trouble getting rid of the black square (representing another camera) when I initially press the key, &  the camera only takes pictures, not a live feed which I don't want!

here's my code:

import processing.video.*;
Capture myCapture;

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

}
int value = 0;

void draw() {
 fill(value);
 rect(25, 2, 50, 50);
}

void keyReleased() {
 if (value == 0) {
   if(myCapture.available()) {
   myCapture.read();
 }
   image(myCapture, 0, 0);
 } else {
   value = 0;
 }
}

any suggestions would be great!

Thanks
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