OTOY Forums

Hello everyone,

I'm in a bit of a jam with Octane at the moment--I have a project I brought into Octane, an interiour. There's no deadline or rush, just exploring Octane. I'm having a lot of trouble clearing up noise. I would like to continue using Octane and I've seen fantastic work by other users who have done interiours. Would you all mind sharing how you circumvented any noise issues?

Thanks!

Solutions are: no small emitters, less glossy materials, open walls and so on
best thing would be if you could show your scene and noise problem so we could give specific tips

Don't forget to use Portals on windows/open doors, as suggested in The Manual.

Sometimes a specular object can be introducing noise.. even a little one.. check that too.

Do not put an emitter inside of a recessed light (tube in ceiling).. I made that mistake
early on. Put an emitter at same plane as ceiling.

I would highly suggest making a test interior scene - that is as simple as you can
make it - with a window or two, a couch, a table.. use daylight system with some
sunlight coming in and now start playing with emitters in the room. Then
add objects one at a time - which may very well give quick insight into what is
causing what. This is what I did when I was getting a ton of noise while first using
Octane.. and this got me up and running much, much faster than I would have been
otherwise. Think about it - if you are new to Octane and load up a crazy indoor scene
with tons of furniture etc - and light coming from every-whicha-way - you are likely
just jumping from one setting to another trying desperately to figure out what in hell
is making stuff look like poo...

Baby steps bro.

use PMC. no pure white material colours. bump maps on glossy materials can create noise on their surface. use caustic blur. render at 8000 samples. let the light bounce 8 times.

Thank you for the replies.

I see a few things here I haven't tried yet, so I will be doing so now--thank you again. My emitters may be doing it, but overall I think my whole scene is just too complex to render in one go--cutting apart the rooms and opening walls to allow more light in may very well do the trick. The scene/renders are actually in the WIP section here: http://render.otoy.com/forum/viewtopic.php?f=6&t=27790

Feeling a bit more confident now that I have a new direction for my workflow with Octane. Let's see how it goes!

Thanks again,

Mikel

FrankPooleFloating wrote:Don't forget to use Portals on windows/open doors, as suggested in The Manual.

Ah, so that means, instead of using an actual glass material for a window, one should set the window (resp. the glass part of it) to portal?
I never thought of this, thanks for the tip.

If you render with an HDRI lighting, the texture gamma must be set to 1.

Render in high resolution and reduce noise afterwards in postproduction and/or downscale image will help too.
Greetz,