We would be super grateful if you could experiment with this option in your scenes (simple tests, wip, production - anything) and share your results here. We need any feedback: image quality, rendering time, how it works with high quality denoising… anything you spot.
So far our tests confirm that it helps in situations such as:
-Fine patterns, which are mixed with noise (patterns are easier to see)
-GI noise in general
-DOF, especially when there are bright spots blurred by the DOF
-Sharp edges of bright objects
-Moire patterns
I didn’t have much time to play with it, but from what i saw so far, i’m very impressed. But please, please make it compatible with real time denoiser - i can’t live without it
One thing i noticed, it looks that HQ filtering doesn’t like refractive materials, to be more specific, not filtering itself, but its combination with denoising. Look how much denoising has smeared the pixels behind refractive lens in render with HQ filtering.
Had to re check my denoiser activation, to be sure it was on w/o Hi-quaity filtering. Hi-quality filtering makes a noticeably significant difference in most situations.
critical, not obvious edit: ‘Hi-quality filtering’
i rendered the same frame with the HQ Image filter turned on in the newest build, compared to the same frame from the previous build and i experienced longer render times with the new HQ image filter on: 42 minutes vs 1 hour 54 minutes. But I do think the quality is a little better though. But sadly, at this time, not better enough to warrant using it because of the increase in render time, it seems.
High quality filtering does not work with AI denoisers, you should get warning message about that. If you rendered with one of AI denoisers enabled, then HQ filtering was automatically disabled.
Before the test, I read this information. Denoise is disabled
Maybe I do not understand something, but when I click on this parameter, it only gets worse.
It becomes noticeably more noise and stops working with him, denoise
Feodor, i was refering to Nekrobul’s post. As for your results, are you comparing tent filtering with denoiser versus high quality filtering with no denoiser?
Sorry mix up the message)
So I have not checked.
I was a little puzzled by the function that degrades image quality. When using noise, “Using high quality pixel filtering with AI denoising is not supported.”
At this stage of development of this function, for the time being it seems to me useless, harmful
It looks that same can be said about reflections - without denoising HQ filtering gives very good results, but if denoising is enabled, it just smears details badly. I think that enabling HQF by default, is a little bit premature at this point.
Good thing i have visited forum before going to sleep, shure yes. And i will make same settings i used for previous just with 4k.
10hrs 588pases no adaptivity 4GI\AA as pevious
Shadow details on wall present after denoising as on image with old sampling.
And noise on the floor is much lower.
PS - The denoise error was VFB halucinacion. It is not present on saved images(denoised). I compared them using photoshops diference blending and there is only slight differenc in noise stucture. I will attach both images for it will be simplier to compare.
Ok, I tried another test with limiting by passes (PT+PT, same as my first test on page 1), but I left the Corona HQ denoiser on. Details in the file name.
The main difference I see in the type of noise, is that with HQ filtering off, there is the ‘classic’ type of CG noise. But with it on, the noise is a little more ‘smudged’, which I assume is the HQ denoiser trying to deal with a different type of noise. I may try another test with all denoising off.
Thanks!
