[PD] video bluescreen
Garrett Lynch
lists at asquare.org
Mon Feb 9 20:02:04 CET 2009
Hi
Apologies for the slowness of my reply. Thanks both for the
examples. I couldn't get pix_background working Ben but it seems to
be not what I'm looking for on this occasion anyway. Mark, managed
to see yours working, yep its pretty raw but it's a start which is
what I needed. Many thanks.
a+
gar
> You don't actually load a base image into pix_background, you send
> a [reset( message to the [pix_background] object and it takes a
> snapshot of whatever's in front of the connected camera (or
> incoming video stream). Then it compares all incoming frames with
> that snapshot and outputs anything that's different between the
> two. The right inlet sets the threshold and takes an RGB value, so
> you will have to adjust this to reduce inevitable noise and
> artifacting. I have attached a very basic version of this patch
> I've described. I don't have a cam attached to this computer and
> don't have the time to test it, but it should work.
>
> -Ben
> http://megrimm.net/software/green-screen-pd-0.01/green-screen-pd.zip
>
> this sort of works although its still pretty sloppy. didn't try
> with screen yet but with the help of iohannes and jacks color
> picker examples one should be able to key out any solid color from
> a video just by selecting it in a gem window.
>
> works on my side on osx.
>
> mark
_________________
Garrett at asquare.org
http://www.asquare.org/
http://www.asquare.org/networkresearch/
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