PanoTools NG:
Re: [ ] Re: enfuse question / using enfuse for median stacking to de-noise
Thomas Bredenfeld mailinglist@... 2016-Sep-13 14:57:51
thank you for your explanation, erik!
Am 13.09.16 um 12:50 schrieb Erik Krause #removed# [PanoToolsNG]:
> Am 13.09.2016 um 11:55 schrieb Thomas Bredenfeld:
>> so does anybody here know with what parameter setting i can get the same
>> results as in photoshops median stacking? i think i'm not that far away
>> from the right numbers.
>
> Sorry, but enfuse doesn't do median stacking.
hhhmm, but obviously enfuse does some "kind of" a weighted averaging as
most of the plane and and satellite trails are disappearing and the
noise is significantly reduced.
> With the exposure
> parameter set to 1 it will consider pixels from each input image that
> are neither over- nor underexposed (except of course they are over- or
> underexposed in all images).
this means, the result pixel luminance is an average from each image?
this would explain the noise reduction...
> With the saturation parameter it looks for the most saturated pixels,
> with the contrast parameter it looks for pixels with the highest
> contrast to it's neighbors, which makes it suitable for focus stacking.
> The parameters are weights, so you can mix them in any proportion.
ok. this is, what i understood from the documentation as far as i can
decipher the mathematic stuff shown there :-)
> For astro photography there are specialized stacking programs like f.e.
> http://deepskystacker.free.fr/
using enfuse instead of a dedicated astro stacker has the advantage to
be fed directly from lightroom with raws (and temp tifs of couse) via
LR/enfuse or via tiffs to enfuseGUI so material for astro panos can be
processed quite comfortably and relatively quick.
and: the majority of astro apps are windows only... (i'm on a mac).
best
thomas
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