POV-Ray : Newsgroups : povray.beta-test : Problem with new focal blur noise pattern and animations : Re: Problem with new focal blur noise pattern and animations Server Time
28 Jun 2024 11:03:09 EDT (-0400)
  Re: Problem with new focal blur noise pattern and animations  
From: Tek
Date: 11 Nov 2010 10:15:00
Message: <web.4cdc075a51977b7ecaa39c860@news.povray.org>
"Tek" <tek### [at] evilsuperbraincom> wrote:
> Le_Forgeron <jgr### [at] freefr> wrote:
> > For 3.7beta, you might have a look at the bokeh setting to vary the sampling
> >
> > http://wiki.povray.org/content/Documentation:Reference_Section_3
> >
> > Using a moving pattern of your choice for the distribution of the
> > samples grid.
>
> Good idea, but sometimes it still samples the same points (particularly with
> very low numbers of samples).

After some testing I'm getting the impression that the bokeh filter isn't
strictly applied. I'm getting square shapes when using a bokeh which is mostly
black, as if the algorithm gives up after a few tries and just uses the sample
anyway. Indeed, using a completely black bokeh filter doesn't cause any error
and I still have blur.

This is an understandable limitation of the bokeh filter implementation, but it
limits my ability to use it to randomize blur samples.

Anyway, for the time being I don't really need high quality focal blur in an
animation, and if I do I can just use more blur_samples to brute-force it. But
it would be nice if someone could take a look at the code to fix these niggles.


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