Posterization blues

[Chris Wright]

first make sure that you are running 32bpc, have color management setup correctly, are using 32bpc plugins, etc.

Next you can either use a chroma keyer or use procedural matting to isolate the blue tolerance to the blue saturation then a simple fast blur.

I recommend Primatte keyer because it can plug holes which is useful for automatic roto work. If you don’t have it, you can use my free procedural keyer I made. Works on clouds too.

Here’s my AE cs3 procedural keyer for luma/sat.
use matte adj controls layer to create a procedural matte keyer using the inner/outer sliders
https://www.megaupload.com/?d=DYVXXNIW

https://technicolorsoftware.hostzi.com/

[Hugh john Murray]

sweeeet. will try it, thanks. don’t suppose it makes a difference if there is a big plane moving through the sky or subject in foreground?

cheers

[Chris Wright]

I don’t think the plane will be a problem or the subject as long as they are not blue, but make sure you click the link I updated, not the email. Also the comp size was 720. And if the person is wearing a blue shirt, you still might have to roto. Cotten shirts tend to encompass the entire blue range/sat…evil they are.

https://www.megaupload.com/?d=DYVXXNIW

https://technicolorsoftware.hostzi.com/

[Hugh john Murray]

on second look and playing with your aep, I fear this is beyond my AE skillset. Really have no idea what to do. Was hoping for an easy plug-in – but thanks anyways!

[Roland R. kahlenberg]

Try Channel Blur on only one of the RGB channels – I can’t recall which ;-). It works quite well on different conditions.

Cheers
RoRK

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