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how to rotobrush small thin objects (like eyelashes)

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john damiani
how to rotobrush small thin objects (like eyelashes)
on Feb 25, 2012 at 2:47:58 am

does anyone know how i can rotobrush small thin parts of a comp, like a hair or a chain link fence, or other such objects

thanks in advance :)


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Roland R. Kahlenberg
Re: how to rotobrush small thin objects (like eyelashes)
on Feb 25, 2012 at 3:18:18 am

If you don't have a chroma backdrop then Luma Mattes are ideal for such things issues. Of course a lot depends on the image that you have.

HTH
RoRK

Intensive AE & Mocha Training in Singapore and Malaysia
Adobe ACE/ACI (version 7) & Imagineer Systems Inc Approved Mocha Trainer


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john damiani
Re: how to rotobrush small thin objects (like eyelashes)
on Feb 25, 2012 at 3:24:03 am

Thanks for the tip!

Unfortunately, I am not really too familiar with mattes in general. Do you have any tutorials you would recommend to get me more knowledgeable with the subject, possibly including luma mattes?


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Roland R. Kahlenberg
Re: how to rotobrush small thin objects (like eyelashes)
on Feb 25, 2012 at 5:31:16 am

Take a look at this -> http://library.creativecow.net/articles/lauritzen_lester/water-matting/vide...

HTH
RoRK

Intensive AE & Mocha Training in Singapore and Malaysia
Adobe ACE/ACI (version 7) & Imagineer Systems Inc Approved Mocha Trainer


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Joseph W. Bourke
Re: how to rotobrush small thin objects (like eyelashes)
on Feb 25, 2012 at 3:37:47 pm

An issue to bear in mind is that, depending on the size of the element in the shot, it may be smaller than a pixel, in which case I don't think that any paintbrush would work.

You might try taking a still frame from your project and bringing it in to Photoshop, then zooming way in to pixel level. That will tell you if it's possible purely from a pixel standpoint. I don't believe that the paint tool works at subpixel level, but I may be wrong.

Joe Bourke
Owner/Creative Director
Bourke Media
http://www.bourkemedia.com


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Scott Roberts
Re: how to rotobrush small thin objects (like eyelashes)
on Feb 25, 2012 at 9:49:49 pm

Subpixel? Intriguing. I can see how an object might have antialiased edges that may make an object appear to be thin, but i've not heard of something smaller than a pixel.

LittleBlackBird.net

My Blog


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Dave LaRonde
Re: how to rotobrush small thin objects (like eyelashes)
on Feb 26, 2012 at 3:32:59 am

"Subpixel" refers to a situation where AE's math is less than one pixel. It happens all the time.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Scott Roberts
Re: how to rotobrush small thin objects (like eyelashes)
on Feb 26, 2012 at 8:00:45 am

Ah, cool. Thanks for that!

LittleBlackBird.net


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