Image Banding

Compositing
1

Dear All !

Im working on HD 720p ( 1280x720 ) - CGI image format, all other images are working fine with Blur and Colorcorrection tools.

But only Skies and some of the Dark lit areas are getting the Banding effect when i blur them, even if i change it to 16 bit in shake, its not helping.

if somebody has a solution pls let me know..... ASAP

thanks in advance

Nishok A

2

only thing i can think of is to add a bit of noise/grain and to maybe go to float.

check the order of the operators and make sure there isn't something still set to 8bit, the enhanced node view helps big time for this, if it is still banding you're in for a hell of a job to get rid of it.

3

i dont know, if you get banding by blurring only something is weird (blurring usually hides banding)..

if you get banding in gradients when color correcting the cgi then most likely the original renders are 8bit only and the only thing i can think of is re-render it or add noise.

but if you want better advice, you should post a frame and a sample script.
++ chris

4

Yes, Even if i get some 8-bit CGI images, which develops banding during color correction and blur operations, i applied Grain ( size and density "0.2" and "0.2", seed "0" ) this is the only solution i know for now to solve the banding in the 8 bit cgi. it works very well i have solved banding in so many scs.

QUOTE(zem @ 04/16/07, 08:36 AM) [snapback]264184[/snapback]
i dont know, if you get banding by blurring only something is weird (blurring usually hides banding)..

if you get banding in gradients when color correcting the cgi then most likely the original renders are 8bit only and the only thing i can think of is re-render it or add noise.

but if you want better advice, you should post a frame and a sample script.
++ chris