Trying to use an effect on a webcam feed

Contributed Library Questions

oliviergr..

Trying to use an effect on a webcam feed

in Contributed Library Questions • 1 year ago

For school we have to get a dynamic image of ourselves, and i found this code

http://www.openprocessing.org/sketch/6147

Now i would like to swap the image with a live webcam feed.

I've been playing around with the:

import codeanticode.gsvideo.*;

GSCapture cam;

but i can't get it to work!

Does anyone has an idea on how to achieve this?

Thx in advance!

Replies(2)

tfguy44

Re: Trying to use an effect on a webcam feed

1 year ago

1) Forget about doing the particle system at all for the moment.

2) Get a feed from your webcam working. Try using the normal video library: http://processing.org/reference/libraries/video/Capture.html

3) Once you can draw the image of what your camera sees, add the code that does the webcam stuff to the sketch you've mentioned. Disable adding any Particles; just get it to draw the image again.

4) Stop drawing the image. Modify the Particle class so that it's color is no longer constant, but is continuously changing based on the color of the pixel in the webcam's image at the Particles starting position.

oliviergr..

Re: Trying to use an effect on a webcam feed

1 year ago

If i do your 2nd step i get an VDIG error.

That's why i tried GSCapture. GSCapture actually works to display the webcam.

I'm not sure what you mean with step 3 (and later on maybe step 4 aswell xD) though (forgive me, i'm a NOOB) :P

The code to get my webcam to work right now is this one:

import codeanticode.gsvideo.*;

GSCapture cam;

void setup() {

size(640, 480);

String[] cameras = GSCapture.list();

if (cameras.length == 0)

{

println("There are no cameras available for capture.");

exit();

} else {

println("Available cameras:");

for (int i = 0; i < cameras.length; i++) {

println(cameras[i]);

}

cam = new GSCapture(this, 640, 480, cameras[0]);

cam.start();

// You can get the resolutions supported by the

// capture device using the resolutions() method.

// It must be called after creating the capture

// object.

int[][] res = cam.resolutions();

for (int i = 0; i < res.length; i++) {

println(res[i][0] + "x" + res[i][1]);

}

// You can also get the framerates supported by the

// capture device:

String[] fps = cam.framerates();

for (int i = 0; i < fps.length; i++) {

println(fps[i]);

}

void draw() {

if (cam.available() == true) {

cam.read();

image(cam, 0, 0);

// The following does the same, and is faster when just drawing the image

// without any additional resizing, transformations, or tint.

//set(0, 0, cam);

}

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