Post your tips for animation noise reduction.


#1

I have been searching around for noise reduction tips and haven’t found many other then just turn up the AA.
I just tried using the distance blurring, hopefully i will fix the ecosystem noise.
Is it true if you turn off plant wind animation it helps with the noise issues in the ecosystem trees?

Any input would be appreciated, and i hope helpful to further searches.


#2

render 30% larger than needed, then scale down in post. Don’t use vue’s motion blur, export the g-buffer and use a compositing app. Turn off breeze and wind.


#3

I allready killed the wind and breeze. I have been using Nuke’s blur where you use the Zdepth and the camera data to generate motion blur. I have not tried motion vectors from vue, do they work beter?


#4

That would depend on the format of the z-depth input. I recommend 16-bit tiff. If you need to use 8-bit, then I suggest running a levels filter on the animation pass then converting. Png files are great for this kind information, but it take a while to save the format, in post of course, since vue doesn’t save 16-bit png. Exr also highly suggested as an output from vue.
Lol, I’m actually releasing a bunch of training about working with zdepth from vue today, so its all still fresh in my mind.

The vector pass will be able to provide nuke with more information about the scene, and should work better than the zdepth, since zdepth is typically slices of the scene and not a full depth.


#5

render to full frame uncompressed.


#6

Image sequences work best, rendering to a video format will reduce the depth of the images, even uncompressed, and especially with zdepth.


#7

yeah I always render image sequences, usually .exr, just out of habit from Rendrman and Maya. I dont know how much float data Vue outputs in the colour pass but i still do it. I tried the 30% thing, it helped a lot. I have also been playing with the distance blurring in the animation render settings. My animation has a camera flying over a large forest.

cheers!


#8

I’ve used some other techniques for the eco-flicker, thought I’d mention them.

I linked a video below, one that I made for my LW integration training, with Vue 6.
(note, camera shake is way too high)
quicktime mov

I rendered this with the “final” render preset.
Frames were about 30% larger from the final output.
I scaled them down, then scaled them back up.
I think I even scaled it smaller and back up again.
I also created duplicates of the sequence, 3 or 4, and then offset the time of each one by one frame of the previous. I used a combination of blur filters and blending modes, with mid-range opacity levels on the top layers.

Not the greatest method, and doesn’t look amazing, but you should have seen the original.


#9

You have been a ton of help! if you are ever in San Francisco ill get ya a beer and burger =D

I plan on picking up the advanced dynamic population DVD too =D


#10

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