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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
Image registration/averaging and image quality
Posted: Jul 5, 2006 10:40 AM
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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

2) Is there a better metric to characterize the improvement in
resolving power, or resolution, when registering and averaging multiple


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