Bug in ImageJ?

Posted by Andreas Maier on Sep 10, 2010; 5:51pm
URL: http://imagej.273.s1.nabble.com/Bug-in-ImageJ-tp3686967.html

   Hi,

I have a question to the ImageProcessor class. In interpolated value
this statement is found:

------------------------------

public final double getInterpolatedValue(double x, double y) {
         if (useBicubic)
             return getBicubicInterpolatedPixel(x, y, this);
         if (x<0.0 || x>=width-1.0 || y<0.0 || y>=height-1.0) {
             if (x<-1.0 || x>=width || y<=1.0 || y>=height)
                 return 0.0;
             else
                 return getInterpolatedEdgeValue(x, y);
         }
-----------------------------

We are experiencing troubles in reading some of the image edge values.
Shouldn't the second constraint

  (x<-1.0 || x>=width || y<=1.0 || y>=height)

be

  (x<-1.0 || x>=width || y<-1.0 || y>=height)

                         ^^^^^^^

Best,

Andreas

P.S. Is this problem already fixed in a newer version of ImageJ? We are
using ImageJ 1.43u.

--
Dr.-Ing. Andreas Maier
Stanford University
Department of Radiology
The Lucas Center for Imaging
Mail Code 5488, Route 8
Stanford, CA  94305
http://med.stanford.edu/profiles/Andreas_Maier/