TroikaTronix Forum: Isadora: General: Face Blending


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Face Blending

gavspav
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Mar 26, 2008, 1:17 PM

Post #1 of 3 (676 views)
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Face Blending	Can't Post

I'm making a Digital Mutoscope (Peepshow) like the pre-film What the Butler Saw Machines.
Basic idea is that you put your head through a hole, wind the handle and see a movie play.
But the movie has your face in it - captured by the camera & composited in real time.

I'm wondering if anyone has any ideas for the blending side of things.
I've managed to managed to do realtime colour matching using the Histogram Operation patch of Quartz Composer.
This works pretty well.

But the fact that I just basically have an oval image and drop it in the movie means looks a bit too rubbish!
It doesn't have to be perfect but it has to be a bit better!
Currently I just have an oval alpha mask put through a Gaussian Blur.

I am slightly graphically challenged! Anyone got any clues?

Thanks,

Gavin

Mark Coniglio
TroikaTronix / Moderator

Mar 27, 2008, 9:51 AM

Post #2 of 3 (667 views)
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Re: [gavspav] Face Blending [In reply to]	Can't Post

One idea: modify your movie so that it has a colored "marker" where the face should go - i.e., pure green. Then use a chroma key actor to isolate the marker, and feed it in to Eyes. That way, as the face moves around the screen, you can place it into the face.

Regarding blending, you could 1) put a green background on the inside of the hole, allowing you to chroma key the background out, or 2) just make an oval mask in photoshop and use the add alpha channel to attempt to blend it in.

Best Wishes,
Mark

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Mark Coniglio / TroikaTronix
Creator of Isadora

gavspav
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Mar 27, 2008, 10:55 AM

Post #3 of 3 (661 views)
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Re: [Mark Coniglio] Face Blending [In reply to]	Can't Post

Hmm - well the movie clips are only 30 seconds are so - so I've mapped the 'destination locations' by hand and put the co-ordinates in Look Up Tables. That bit is sorted.

The blending I've made an oval alpha mask using the Shapes actor + Gaussian Blur but I need to flatten the image somehow. It looks pants.

Gav

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