Re: Lanczos interpolation

Posted by Michael Schmid on Apr 18, 2008; 7:48am
URL: http://imagej.273.s1.nabble.com/Lanczos-interpolation-tp3696296p3696301.html

Hi Christophe,

I am not aware of any sync or sync-based interpolation plugin
(Lanczos is based on a sync*sync kernel).
What you could try is the TransformJ package
   http://www.imagescience.org/meijering/software/transformj/index.html

According to the paper on that page, it should be comparable
in quality to sync faster.
A pity that the source code of TransformJ is not available...

Michael
________________________________________________________________

On 17 Apr 2008, at 22:57, Christophe Leterrier wrote:

> Is there any ImageJ plugin that performs Lanczos interpolation/
> resampling ?
> I saw that the "Interpolate" option in the "Adjust size" command uses
> bilinear interpolation, which creates aliasing when I reduce sizes of
> photographs (I use IJ to generate thumbnails...). There is the BIG  
> Resize
> plugin (http://bigwww.epfl.ch/algorithms/ijplugins/resize/) that  
> uses "least
> square" method, but how does it compare to Lanczos in terms of  
> quality for
> 1) downsizing or 2) upsizing ?
>
> Christophe