PanoTools:
Re: dynamic range and noise (yet again)
Erik Krause 2005-Oct-28 00:43:35
On Thursday, October 27, 2005 at 12:32, Paul D. DeRocco wrote:
> > However, the technique has it's limits: Camera shake, moving objects
> > and so on. And of course it's easier to extend dynamic range by
> > blending multiple exposures: To gain one f-stop dynamic range you
> > need to double the number of images.
> No, you have to quadruple the number. The sum of the image data goes
> up by a factor of four, and the sum of the uncorrelated noise goes up
> by a factor of two, yielding a factor of two S/N improvement.
Yes, of course, thanks for correction.
best regards
--
Erik Krause
Resources, not only for panorama creation:
http://www.erik-krause.de/
Read panotools at GMane:
http://news.gmane.org/gmane.comp.graphics.panotools
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