Re: Fwd: Temporal Boxcar Filter?
Posted by
Saalfeld, Stephan on
Nov 18, 2015; 3:53am
URL: http://imagej.273.s1.nabble.com/Fwd-Temporal-Boxcar-Filter-tp5014968p5014969.html
Hi Jacob,
you could reslice to map t into x or y, do the boxcar there and reslice
back.
If you're happy hacking a bit, you could also use my ImgLib2 port of
Unser and Sage's convenient ImageAccess
https://github.com/axtimwalde/ImgLib2Accessto simply do it in time:
https://github.com/axtimwalde/ImgLib2Access/blob/master/src/main/java/net/imglib2/imglib2access/Code.java#L113-L127and if you want to be even fancier, you can convert your image into an
integral time series (just make each frame the sum of all previous
frames + itself (use higher precision type to store the numbers)), and
then do ultra-efficient box filters of arbitrary size exploiting that
$\sum_a^b = \sum_0^b - \sum_0^a$
Best,
Stephan
On Tue, 2015-11-17 at 22:33 -0500, Jacob Keller wrote:
> Is there a way to do boxcar smoothing of arbitrary size in the time
> dimension?
>
> JPK
>
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