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Topic: Image registration/averaging and image quality
Replies: 1   Last Post: Jul 5, 2006 1:10 PM

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Peter Lundh

Posts: 11
Registered: 1/25/05
Re: Image registration/averaging and image quality
Posted: Jul 5, 2006 1:10 PM
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> 1) In the ideal case the registration and averaging of, for instance
> 150 individual 8bit noisy images will improve SNR by log10(n x 256),
> and the dynamic range from ~2.4 to ~4.6. However, when aligning low SNR
> images, the match is not always perfect (or rather, it is almost never
> perfect). Under such circumstances how does one model the change in
> SNR.

Sorry, there was a mixup - it's the dynamic range that is derived from
log10(n x 256)
(we're having a heat-wave in the UK at the moment). Questions still
stands, though...


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