[ptx] Enblend suggestion: focus score weighting

[Rik Littlefield]

Sebastian,

I ran into another extended-depth-of-focus tool today.  It is a plugin 
to ImageJ (http://rsb.info.nih.gov/ij/).  The plugin is at 
http://bigwww.epfl.ch/demo/edf/index.html .  It references a paper named 
"Extended Depth-of-Focus for Multi-Channel Microscopy Images: A Complex 
Wavelet Approach", which I find posted at 
http://bigwww.epfl.ch/publications/forster0401.pdf .  They claim that it 
gives significantly better results than the "classical" variance 
approach, particularly in homogeneous areas.  I'm just posting the 
reference here so that we can find it again if somebody wants to work on 
extended depth of focus.

--Rik

Rik Littlefield wrote:

> Sebastian,
>
> What you propose makes a lot of sense.  I think there are no 
> fundamental problems.  See my post at 
> http://www.email-lists.org/pipermail/ptx/2004-May/001596.html .  There 
> is also recent discussion of other approaches & software for this 
> problem on Max Lyons' forum at 
> http://www.tawbaware.com/cgi-bin/forum/cutecast.pl?forum=3&thread=759 
> .  I have played with the various softwares mentioned there (Helicon 
> Focus, CombineZ, and AutoMontage).  For my purposes they all have 
> drawbacks -- either lack of quality or lack of control or high cost or 
> limitations on image size -- so I would very much like to see some 
> sort of mask-by-focus capability incorporated into the ptx  family of 
> software.
>
> --Rik