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Removing color banding...

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travis heberling
Removing color banding...
on Jan 22, 2012 at 5:55:31 pm







Hey everyone!

My client wants an Apple style video, but the footage I have has a bit of banding or zebra stripes on his suit.

Is there a proper way of removing this issue?

Thanks!


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ben g unguren
Re: Removing color banding...
on Jan 22, 2012 at 6:52:21 pm

What you're seeing on his suit is called "moiré" -- there are a lot of methods for removing it. I like to isolate the area and add a bit of a blur to it. Do a google search for After Effects and moire.

Ben Unguren
Motion Graphics & Editing
http://www.mostlydocumentary.com


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Andrew Somers
Re: Removing color banding...
on Jan 22, 2012 at 7:01:03 pm

That is more commonly referred to as Moiré

http://en.wikipedia.org/wiki/Moiré_pattern


The term "Zebra" is used to describe the overlay that is sometimes used to indicate "out of legal" brightness or colors in a camera viewfinder (or similar places).



To avoid moire in the future, test wardrobe to make sure that it does not have a pattern to cause the moire'

In the meantime, it can be corrected using a low pass filter,, that removes the higher frequency detail from the image.


In after effects the "low pass" filter is also called FAST BLUR or GAUSSIAN BLUR. :)


To fix the moire, create an adjustment layers and add FAST BLUR, and adjust just high enough that the moire disappears. THEN use a mask on the adjustment layer to constrain the blur to the area needed.


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Tudor "Ted" Jelescu
Re: Removing color banding...
on Jan 22, 2012 at 7:42:29 pm

You can also try a Remove Grain filter- it worked for me quite a few times. You will need to play with the settings a bit. Changing the frame from where the samples are taken and the way it affects solid areas will help.

Tudor "Ted" Jelescu
Senior VFX Artist


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travis heberling
Re: Removing color banding...
on Jan 26, 2012 at 2:50:24 am

Thanks everyone for the feedback!


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