"Green screen."

[Robert Casey]

I have worked with OpenCV a bit in the past, and even done things similar
to this (about 6 years ago).  I found it very easy to work with if you know
a little bit of C++ (and Ken, I know how you love to flex your OOP
muscles!).  I've never heard of SimpleCV, but now I'm interested in poking
into it a bit.

There's also a project called phission that a friend of mine wrote a few
years back, although it may be suffering from bit-rot as it hasn't been
actively maintained for a while.  If I recall correctly it is similar to
OpenCV (and may even use some of the library calls from it) but was a bit
more abstracted and slightly faster in his benchmark tests.

On Thu, Feb 14, 2013 at 5:24 PM, chris gagnon
<chris.gagnon at makeitlabs.com>wrote:

> Sorry to double post.  I noticed the greenscreen example didn't include
> using real time camera, to do that in simplecv
>
> You can use a laptop or usb webcam with the camera class:
>
> replace:
> greenscreen = Image("../images/green-screen-person.png")
> greenscreen.show()
>
> with:
> cam = Camera()
> greenscreen = cam.getImage()
> greenscreen.show()
>
> I live in nashua, let me know if I can help you out. we can do a google
> hangout or something.
>
> I've attached a stupid game I wrote in simplecv to give you a better idea.
>
>
> On Thu, Feb 14, 2013 at 2:00 PM, Joshua Judson Rosen <rozzin at geekspace.com
> > wrote:
>
>> 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))))."
>>
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>>
>
>
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