RAW average: interesting examples here! - page 3 - RAW Shooting and Processing - CHDK Forum
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RAW average: interesting examples here!

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Offline genosmm

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Re: RAW average: interesting examples here!
« Reply #20 on: 08 / March / 2008, 12:18:54 »
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Barney,

Do you have any examples you could post?

Am surprised that noise would increase at a lower ISO.

Thanks

Gene
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Offline Barney Fife

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Re: RAW average: interesting examples here!
« Reply #21 on: 08 / March / 2008, 13:08:01 »
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« Last Edit: 22 / April / 2008, 13:54:14 by Barney Fife »
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Offline genosmm

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Re: RAW average: interesting examples here!
« Reply #22 on: 13 / March / 2008, 14:17:13 »
Has anyone tried Noise Measuring Software to see how much difference RAW average makes?

I have been doing some searching and have found this from QSI  "Measure Read Noise in Your CCD Camera" Measure Read Noise in Your CCD Camera

Also came across this by Michael Newbury: Signal-to-noise calculator for CCD photometry  AAVSO: Signal-to-noise calculator for CCD photometry

Am interested in any other Noise Measurement software you have found.

Thanks

Gene
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Offline ntstatic

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Re: RAW average: interesting examples here!
« Reply #23 on: 17 / March / 2008, 05:25:29 »
wow the image is fantastic. there is almost no purple fringing at the corners
it is excellent. i would very much like to use this feature. however i have to capture the images with remote capture using a computer. anyone know if the raw images are available if the image is captured with a computer and an SDK ?
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Offline lukg

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Re: RAW average: interesting examples here!
« Reply #24 on: 17 / March / 2008, 07:40:11 »
Quote from: ntstatic on 17 / March / 2008, 05:25:29
wow the image is fantastic. there is almost no purple fringing at the corners

You cannot remove purple fringing averaging pictures. You can remove "random" noise (eg. at high ISO), not "fixed noise" (eg. a hot/dead pixel, physical flaws).
And purple fringing is usually caused by different light refraction.
« Last Edit: 17 / March / 2008, 07:45:39 by lukg »
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Offline donny

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Re: RAW average: interesting examples here!
« Reply #25 on: 17 / March / 2008, 19:40:14 »
Is there a script available that'll take 3 or 4 RAW images and average them out automatically instead of just taking one?
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Offline fudgey

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Re: RAW average: interesting examples here!
« Reply #26 on: 18 / March / 2008, 12:13:21 »
Erm... RAW average is built in the file browser in recent releases, no need for scripts...
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Offline donny

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Re: RAW average: interesting examples here!
« Reply #27 on: 18 / March / 2008, 22:18:20 »
Yes, I know that.  But the process right now is to take however many shots you want, stationary, and then go into the file browser manually to do the averaging.  Was just wondering if there was a script to automate the process.
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Offline PhyrePhoX

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Re: RAW average: interesting examples here!
« Reply #28 on: 19 / March / 2008, 01:54:28 »
not yet, as that would require knowing in script the names of the raws you just shot. it is possible, but it will be (at least to me) very difficult to implement.
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Offline Barney Fife

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Re: RAW average: interesting examples here!
« Reply #29 on: 19 / March / 2008, 03:46:57 »
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« Last Edit: 22 / April / 2008, 13:54:35 by Barney Fife »
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[acseven/admin commented out: please refrain from more direct offensive language to any user. FW complaints to me] I felt it imperative to withdraw my TOTAL participation. Nobody has my permission, nor the right, to reinstate MY posts. Make-do with my quoted text in others' replies only. Bye
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