"Green screen."

[Joshua Judson Rosen]

Ben Scott <dragonhawk at gmail.com> writes:
>
> On Wed, Feb 13, 2013 at 8:13 PM, Ken D'Ambrosio <ken at jots.org> wrote:
> > ... a really solid idea for a fun activity was the proverbial
> > TV weatherman "green screen."  I have to imagine this would
> > be feasible with Linux -- anyone have any suggestions on
> > leads to hunt down?
>
>   I've never worked with it, but "chromakey" is the generic term for
> that.  Google results show some promise, although it seems to be
> mostly post-production editing, not live:
>
> https://www.google.com/search?q=linux+chromakey

EffectTV includes a very simple, real-time chromakey tool/toy, and it
exists prepackaged in Debian and Ubuntu and maybe other
distributions:

    http://effectv.sourceforge.net/bluescreen.html

If you want more of a `simple DIY' solution so that you can get into
*how it works*, I seem to remember someone describing a way of using
SimpleCV to do chromakey....


EffectTV also gives you a lot of other fun real-time video effect toys
to play with if you want; I think my favourites, when I played with it a
few years ago, were...:

    * The `Chameleon' effect that allows someone to walk onscreen and
      then fade into the background like a chameleon:

          http://effectv.sourceforge.net/chameleon.html

    * The `invisiblility effect from the movie, `Predator':

          http://effectv.sourceforge.net/predator.html

    * The `scanning 1-D camera' effect:

          http://effectv.sourceforge.net/1d.html

-- 
"Don't be afraid to ask (λf.((λx.xx) (λr.f(rr))))."