Chaos Corona for 3ds Max > [Max] Feature Requests

Noise Level enhance

(1/1)

Starline:
Hi,
it'll be useful to exclude some object from the noise level computation for example the background (Corona Sky or HDRI) or an object (a background plane).
When the scene have a great part of this element in the composition (sky) the noise level value cleans up quickly but the noise level of the geometry is still high.
I'll usually use pass limit but the choice of the number of passes is empirical. Even further will be fantastic to assign a default noise level target (building) no noise level (sky) and a custom noise level for some object (grass that has noise because is a fine detailed object and add extra time to rendering).

Thanks in advance.
Alessandro

burnin:
IRC, this was already requested in past:
- Render sampling mask
- More intelligent 'Render only Mask'
(aka "Extra Sampling" feature of Maxwell~R)

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"Final decision"(as I gather), quoting houska (1st thread linked above):

--- Quote ---...adaptivity should handle pretty much anything that you throw at it, as long as it has enough data. So if you render enough passes, you should not feel the need to ever tell the renderer where it should concentrate rays (unless you want just a preview, which is where you'd use the render regions).
--- End quote ---

But 2nd, more recent thread, has it reported & listed (Internal ID=597096944)
So, IRDK where we stand with all of this.
 

maru:
The main issue here is that using the same noise level value in different scenes may result in different perceived image quality. What we would like to have is a reliable noise level limit that would guarantee exactly the same final image quality regardless of the rendered scene. With this, we could, for example, agree on specific preset values for the noise limit that would always work, let's say: 2% always means no perceivable noise whatsoever, 5% means fine clearly visible noise, 10% and more means draft quality with heavy noise.

Right?

lupaz:

--- Quote from: maru on 2022-08-03, 17:29:58 ---The main issue here is that using the same noise level value in different scenes may result in different perceived image quality. What we would like to have is a reliable noise level limit that would guarantee exactly the same final image quality regardless of the rendered scene. With this, we could, for example, agree on specific preset values for the noise limit that would always work, let's say: 2% always means no perceivable noise whatsoever, 5% means fine clearly visible noise, 10% and more means draft quality with heavy noise.

Right?

--- End quote ---

I'd look into Fstorm for this. A visual tool to decide when it's enough. We still know better than AI :)

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