🚀 go-pugleaf

In article <1992Aug12.153110.15062@stsci.edu> hanisch@stsci.edu (Bob Hanisch,N406,4910) writes:

> John Skilling has a company called Maximum Entropy Data Consultants, Ltd. that
> markets his MEM code (called MEMSYS5).  This is generally considered the state-
> of-the-art MEM package, at least within the astronomy image processing community.

While MEM -- and particularly the MEDC package -- seems to be pretty
effective for astronomical imagery, I'd like to raise a small word of
warning regarding MEM for general restoration applications.  MEM works
by taking a uniform image and `pulling' non-uniformities out of it
only where there is statistical evidence for doing so.  Unfortunately,
the staistical models used by all the implementations of MEM that I've
seen only work well for pulling bright regions from a dark
backgrouond.  Given a image with the opposite contract (e.g., a
bright-field electron micrograph) I've yet to see a good job.

If anyone can:

   - take an image
   - work out the MEM restoration
   - invert the contrast of the image
   - work out the MEM reconstruction of the contrast-inverted image
   - invert the contrast of this reconstruction

and get similar results I, for one, would be most interested!

--
 Dr Adrian F. Clark                                   JANET: alien@uk.ac.essex
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 Dept ESE, University of Essex, Wivenhoe Park, Colchester, Essex, C04 3SQ, UK.