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Topic: Highest color in a video feed? (Read 487 times) |
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cereals
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Highest color in a video feed?
« on: May 13th, 2004, 1:34am » |
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I was wondering if there was a really quick way to find the highest color in a video feed?
I would of thought this might work, but I am doing something wrong.. anychance of any pointers?
Code:
BImage img;
color bright=color(0, 0, 0);
void setup() {
size(320, 240);
background(0);
ellipseMode(CENTER_DIAMETER);
noStroke();
img = loadImage("pipes.gif");
delay(20);
}
void loop() {
image(img, 0, 0);
for(int i=0; i<width; i++){
for(int z=0; z<height; z++){
color col = pixels[(i*width)+z];
//
if(red(col)>=red(bright) && green(col)>=green(bright) && blue(col)>=blue(bright)){
bright = col;
}
}
}
// do something here
}
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Robert in a bus
Guest
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Re: Highest color in a video feed?
« Reply #1 on: May 13th, 2004, 7:12pm » |
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Have you tried using 'brightness'? Instead of checking each pixel for red, blue, and green values, just check the brightness..
http://processing.org/reference/brightness_.html
-r
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Robert in a bus
Guest
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Re: Highest color in a video feed?
« Reply #2 on: May 13th, 2004, 7:38pm » |
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Oh, I think I see the problem. Right now, your 'i' variable represents the number of columns you have scanned so you need to multiply i * height instead of width to get the proper pixel. (i think... haven't had nearly enough coffee yet today.) 
-r
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kevinP
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[OT comment] Was: Highest color in a video feed?
« Reply #3 on: May 13th, 2004, 7:51pm » |
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Robert in a bus writes:
[...]
Those wireless WLAN cards are becoming more powerful every day. 
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Kevin Pfeiffer
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flight404
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Re: Highest color in a video feed?
« Reply #4 on: May 13th, 2004, 10:53pm » |
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Heh... the beauty of the Limoliner to and from NYC. Wireless internet rulz!!!! 
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