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Re: Zooming new problem

Posted by Robert Dougherty on Mar 11, 2009; 7:25pm
URL: http://imagej.273.s1.nabble.com/Zooming-and-smoothing-tp3693324p3693333.html

Herbie, Gabriel, Volker, and everyone,

I prepare my acoustic images by computing them on a coarse grid  
(related to the phased array resolution) and then interpolating to a  
finer grid for presentation.  I found that the bilinear interpolation  
in ImageJ was not doing what I needed, so I wrote a bicubic  
interpolation code by extending the FloatProcessor class and  
overriding getInterpolatedPixel.  There are  other bicubic  
interpolation plugins available for ImageJ, including an example from  
the Burger and Burge book, but in each case the interpolation is part  
of something else, not a direct effort to extend ImageJ.  I posted my  
code on my web site last year in the hopes that someone would run with  
it by implementing the algorithm for the other image types and  
offering it to Wayne.  I was a little tentative because I was not sure  
that my somewhat invented algorithm would work out.  I've been using  
it a lot, and it seems to be perfect for my needs.  If it is time for  
ImageJ to go bicubic, here is a simple path for it.  I do not have  
time to do the coding right now.

Bob


Robert Dougherty, Ph.D.
President, OptiNav, Inc.
4176 148th Ave. NE
Redmond, WA 98052
(425)891-4883
FAX (425)467-1119
www.optinav.com
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