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Re: Vectorized version of nlfilter

From: Kai Torben Ohlhus
Subject: Re: Vectorized version of nlfilter
Date: Sun, 19 Jul 2020 12:57:03 +0900
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

On 7/19/20 3:31 AM, Tony Richardson wrote:
> OK.  I've cleaned up my alternate version of colfilt a bit.  It allows
> for neighborhood processing of only selected pixels instead of all
> pixels.  Neighbors can be specified by row and column offsets instead of
> using all neighbors in a rectangular region.  (This can result in less
> memory usage than colfilt if only a few neighbors of a percentage of the
> pixels in an image are to be processed.)  I would guess that it could be
> faster too (although probably not significantly so), but I haven't tried
> to measure that.
> Tony

Thank you Tony, for your image package [1] contribution.  This
mailing-list is intended for users of Octave to get help.  Code
contributions are better suited for the patch tracker [2] and are easily
forgotten on the mailing list.  Was it possible to upload your file there?



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