On Sep 27, 2:27 am, kfj <[email protected]> wrote:
> I have a hunch that for your particular purpose you may fare better if
> you increase enfuse's exposure sigma, since your not aiming at well-
> exposedness but simply want to average the shots to remove noise. The
> default value is .25 (I think), so if you enter --exposure-sigma=X
> with X (probably much) higher than .25, you may get the results you
> want. And set saturation-weight to zero. Really, enfuse is a tool to
> pick the 'best' bits from several images, but with noisy images, how
> would it know what is best?
>
> Actually this makes me think that it might be a nice option to add to
> enfuse: something like --fuse-all, which would give equal weight to
> pixels from all images and just use the fusing mechanism. But a large
> value for exposure-sigma should do the trick as well. so for your
> enfuse options, try something like
>
> --saturation-weight=0 --exposure-mu=50

Hi Kay,
Just to report back enfuse seems to work rather well for what I wanted
to do.
As an experiment I took:
5 jpegs at a high ISO and 1 tiff at the same High ISO (No RAW on my
camera)
Then I ran the 5 jpegs through enfuse with & without the options you
suggested,
which I discovered should be:
--saturation-weight=0 --exposure-mu=.5
but only by chance (where do the logs go where I can read them?)

The results, worst to best:
1 The 'worst' of the 5 jpegs (I assume smallest file size = least
image information)
2 The 'best' of the 5 jpegs (I assume largest file size = most image
information)
[there was a slight but visible difference between these two]

3 The tiff
[The tiff is quite noticeably better quality than the jpegs, but had a
lot of noise]

4 the two fused images
[Compared to the tiff, These were the obvious winners.]
The fused images had  quality similar to the tiff image, but they were
much less noise without having the typical "smooth blurry" look some
noise reduced images get.
I could see no difference between the default settings and the setting
you suggested (but my starting images weren't that great so . . .  )


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