POV-Ray : Newsgroups : povray.advanced-users : Least Squares fitting : Re: Least Squares fitting Server Time
15 Jul 2024 19:34:28 EDT (-0400)
  Re: Least Squares fitting  
From: yesbird
Date: 11 Mar 2023 13:45:00
Message: <web.640ccc1289b6dca7172b976a10800fb2@news.povray.org>
"Bald Eagle" <cre### [at] netscapenet> wrote:
> https://arxiv.org/ftp/arxiv/papers/1506/1506.02776.pdf
> ...
> I have no idea where the crazy "sphere parametrization" equations come from, but
> I used _normal_ equations, and fixed a typo in the last line of code (needs
> -'s), and got that to work.

I'am afraid that this paper describes the opposite process: fitting something
_into_ sphere. I mean counctrusting arbitrary form _from_ spheres of different
radiuses to achieve best fit (most completed volume). Sorry for
misunderstanding.

Despite that, I forced this Matlab function to work, fixing a few typos.

In any case this was an interesting investigation, I suppose, we can use this
method in future for something useful.
--
YB


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