OTOY Forums

Hello guys !


I'm currently working on a big interior scenes for a client and I was very worried by the amount of noise I get each time I added new lights with new rooms.

So, just sharing a useful (I hope) tip for interior scenes with a lot of IES or small emitters : when you have to render a view, make sure that lights that are not visible are hided ! If not, octane will compute everything.. and you'll get a very noisy image.

Let me know if it works for you

We have had a lot of the same noise problems, but are getting some better results now by using PT, GI clamp 1, Caustic Blur 1, hotpixel around 0.5 for interiors. Worth a try.

I don't like to have a hotpixel value below 0,7 because of losing details. Hide unseen lights is way more effective to get rid of noise and slow renders for interior scenes

This is my latest work for architecture company render time 3minutes 4k there is no noise at the scene I used a lot of lights with samples 10.000 values try this and kernel diffuse it is fix your problem.

This is the render on behance follow me guys.

https://www.behance.net/gallery/21509511/Hotel-Pera

This post is about bringing a solution, not about resolving an issue

Well actually I have to admit that once I had maaany small lights, and they were causing me trouble, noise, and hot pixels. Setting the Kernel to Path Tracing with GI_Clamp=1.0 actually solved the issue.
So I'd say it depends: sometimes it's a material issue, sometimes you have too many small lights and you might get rid of noise\hot pixels by placing a weak ambient light, sometimes you cannot and just set GI_Clamp=1.0.
On the other side, it would be nice from otoy to have some settings well explained in the manual, such as how GI_Clamp works, as well as some tips for solving common issues.

M.