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quick and simple question (Read 1140 times)
njmcgee
quick and simple question
Sep 19th, 2006, 8:16am  
what is the simplest way to mirror image a live video feed?
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eskimoblood
Re: quick and simple question
Reply #1 - Sep 19th, 2006, 2:05pm  
I dont know if is the easiest way, but i think its the fastes: http://www.codetree.org/artwork/art.php?id=140. Take a look at the image and source.
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Andreas Köberle {eskimoblood}
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njmcgee
Re: quick and simple question
Reply #2 - Sep 25th, 2006, 8:14am  
thanks for the reply. and ive worked it out. quite simple really.
your code there might come in handy as i get further into this project. cheers.

for (int i=0; i < width; i++) {
PImage oneColumn = cameraImage.get(width-i-1,0,1,height);
image(oneColumn,i,0);
}
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« Last Edit: Sep 25th, 2006, 10:09am by njmcgee »  
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REAS
Re: quick and simple question
Reply #3 - Sep 25th, 2006, 5:04pm  
Creating new PImage's inside draw(), if the program is animating, is very slow. It's better to make an array of PImage objects and to put the result of get() into the array:

Code:

// Code needed above to set: columns = PImage[width]
for (int i=0; i < width; i++) {
  columns[i] = cameraImage.get(width-i-1,0,1,height);  
  image(columns[i],i,0);  
}
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njmcgee
Re: quick and simple question
Reply #4 - Sep 26th, 2006, 3:01am  
awesome. i've got that working nicely. thanks a lot for the advice. very much appreciated.

nathan
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liquid
Re: quick and simple question
Reply #5 - Oct 25th, 2006, 2:43pm  
nice share,thxs
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jaylfk
Re: quick and simple question
Reply #6 - Aug 21st, 2007, 10:42am  
Hi, i dig up this topic because i have found a faster solution to mirror a webcam video stream or an image and i couldn't find any similar example on the board.

Hope this will be helpful. Smiley

Quote:
void draw() {
// your data here.

Mirror(); // this replaces image(video,0,0,width,height);

// your data here.
}

void Mirror() {
beginShape(QUADS);
textureMode(IMAGE);
texture(video); // replace "video" by your "Capture" declared name or your PImage name.
vertex(0,0,width,0);
vertex(width,0,0,0);
vertex(width,height,0,height);
vertex(0,height,width,height);
endShape();  
}
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