variance alternatives

Posted by Tim Kline on Sep 25, 2007; 9:41pm
URL: http://imagej.273.s1.nabble.com/variance-alternatives-tp3698324.html

I have been using the variance filter to compare images with contrast
differences in features greater than 3 pixels in size.  However, noise
is larger now that I work at higher magnification and variance does not
pick up the difference between the images now.  Does anyone have any
suggestions for analysis?  I have tried to use Gaussian blur and then
variance to remove the noise with little success.

Tim