Home Page › forums › Autodesk/Discreet › Flame and Smoke › Banding
- This topic has 13 replies, 10 voices, and was last updated 13 years, 6 months ago by John Jenkins.
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April 11, 2007 at 4:22 pm #201573terry silbermanParticipant
Once again the ole banding issue. Is there any tricks to creating a grad without getting the banding. The aliasing feature in Action doesnt get rid of it. Was in a HD project and needed a simple grad. Ended up having to do it in Photoshop. Any suggestions.
April 11, 2007 at 5:53 pm #215425pixelmonkParticipantIf you have it, I would suggest the Tinder plug-in.
April 11, 2007 at 6:18 pm #215426burhanParticipantAre you working in 8bit or 10. You might try 10bit. You could also try a gausian blur on Y
April 11, 2007 at 6:27 pm #215427nikolaParticipantVOODOO wrote:Once again the ole banding issue. Is there any tricks to creating a grad without getting the banding. The aliasing feature in Action doesnt get rid of it. Was in a HD project and needed a simple grad. Ended up having to do it in Photoshop. Any suggestions.tinder is good, another trick is to add some grain
April 11, 2007 at 7:29 pm #215432Martin FurnessParticipantI dont have tinder and I tried the blur but still didnt work. A blue to black grad. The blue no likely and creates a problem. Ill have to continue to investigate.
April 11, 2007 at 8:04 pm #215428filipParticipantWhat if you create a big frame, 4k at 12 bits, and then resize it down?
April 11, 2007 at 9:25 pm #215433Martin FurnessParticipantIll try that and see what happens. Thanks.
April 13, 2007 at 2:56 am #215430Andre PereiraParticipantnoise 😀
April 13, 2007 at 6:14 pm #215434Martin FurnessParticipantjoni wrote:noise 😀?
April 13, 2007 at 9:22 pm #215435John JenkinsParticipantThat is one thing Quantel boxes do very well. Create seamless grads in 8 bit.
April 13, 2007 at 10:57 pm #215429bnwParticipantVOODOO wrote:Was in a HD project and needed a simple grad. Ended up having to do it in Photoshop.Be interested to know what was different about the Photoshop grad, compared to the Flame one… maybe Photoshop dithers its gradients.
Adding a tiny bit of noise is the way to fix it. Needn’t feel bad about it either – right from the invention of digital systems people with pointy heads have known that you have to add a little noise to mask quantisation artifacts – but people rarely bother. Well, people other than Quantel, who even have a fancy trademarked name for what everyone else calls dither 🙂
Any kind of monitor calibration makes this worse, annoyingly, especially in 8 bit. Can you guys see the banding on a 10 bit broadcast CRT while working in 12 bit in Flame?
April 13, 2007 at 11:25 pm #215436John JenkinsParticipantIt was (is) called “Dynamic Rounding©”
April 14, 2007 at 2:44 pm #215424McArdellParticipantApril 14, 2007 at 5:40 pm #215431Andre PereiraParticipantadding grain/noise – to form some sort of dithering effect – just enough to kill the banding issues (gaussian – i think – something fine and smooth) usually help
commonly for gradients – id just add grain to the darker color – in your case black – sometimes id try to add it just on the luma
and… sometimes multiple shades/hues – might be a solution – eg skyblue+blue+deep blue+royal blue…til gets to black… er… bottom line chances are from color A to color B sometimes do produce banding issues and youd have to introduce like an “intermediate” color to smoothen the gradient.
oh blending modes are also quite useful to produce “nice gradients”
whew – 🙄 – hope theres something useful here
😀
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