Take a look at my settings

[devin]

I'm doing an animation of an interior space using all IES photometric lights. I have one moving object so I'm saving out a IR map in animation-prepass mode and LC is set to flythrough. I've tried adjusting my settings from very low to very high but I'm getting all kinds of GI noise, increasing the Interp. frames doesn’t seem to help I've had it as high as 24. I really need help this project is past due. My IR settings are:
re:
Medium-animation
HSph. subdivs: 30
Interp. samples: 150
Interp. frames 8
All other settings are default

LC settings:

Subdivs: 1100
Use light cache for glossy rays
All other settings are default

AA settings:

Adaptive DMC
Mitchell-Netravali
Min-2
Max-5

[MoonDoggie]

hsph and interpsamples are a bit lower and much higher than the defaults, also interp frames is pretty high as well.

Why the increase in interp samples? This will give you a very blurry gi solution, set them back to the defaults 50/20 and decrease your interp frames (I usually use '3')

[devin]

I thought having a blurrier GI solution would smooth out the noise I was getting.

[MoonDoggie]

I doubt you were getting GI noise. Your noise was probably coming from your AA settings, which you can smooth out by adjusting your noise threshold in your dmc sampler, however this will also change other things, so I'd suggest in your Adaptive DMC Image sampler using min:1 max:6 and unticking "use dmc sampler thresh." and setting your color threshold to something like .007-.005.

Can we see a test render?

[devin]

I'm going to render a test using all the settings you suggested and I'll post the results soon.
Thanks a lot for the help this one is killing me, I seam to always have issues with interiors but not exteriors.

[MoonDoggie]

No worries, curious to see.

[devin]

I don't have time to upload right now but the noise has decreased or at least now it seems confined to the edges of walls and ceilings. Should I adjust the AA settings or GI?

[devin]

http://www.yousendit.com/transfer.ph...AB01477FEAC72C

[MoonDoggie]

The ceiling lights look like an AA problem. The wall moving splotches are GI.

If there isn't any changing geometry/lights in the scene you can just render every 20 frames or so of your imap and save it instead of using the new animation (prepass) mode.

I would render and save your irradiance map every 20frames with these settings:

min:-3
max:-1
hsph: 50
interp: 20
interpframes: doesn't matter if you aren't using the new mode

if you are using the new mode, smoothing between 2-4 frames is what I'd suggest, also keeping your interpsamples lower will speed up your render a bit. I'm afraid this isn't a quick fix situation, keep posting and we'll see what we can do.


The AA looks ok on the large areas, no visible noise just crappy edges (probably due to the up-resing I was seeing when I watched it)

[devin]

The ceiling lights look like an AA problem. The wall moving splotches are GI.

If there isn't any changing geometry/lights in the scene you can just render every 20 frames or so of your imap and save it instead of using the new animation (prepass) mode.

I would render and save your irradiance map every 20frames with these settings:

min:-3
max:-1
hsph: 50
interp: 20
interpframes: doesn't matter if you aren't using the new mode

if you are using the new mode, smoothing between 2-4 frames is what I'd suggest, also keeping your interpsamples lower will speed up your render a bit. I'm afraid this isn't a quick fix situation, keep posting and we'll see what we can do.


The AA looks ok on the large areas, no visible noise just crappy edges (probably due to the up-resing I was seeing when I watched it)

Colin, this animation was rendered with these settings except I used -3&0 for my min/max rates. I did use Animation(prepass) with an interp. frame of 4. LC was set to 600 with all default settings, AA was DMC/Mitchell-Netravali/min1/max6/ clr thresh .007

[MoonDoggie]

If there aren't moving objects or changing lights in the scene it would be best (read: smoothest for the GI calc) to just render out every 20 frames of the imap and saving the imap and use it to render. What do others think?