Re: Editing the FFT of a jpeg

Posted by Robby Connor on Sep 21, 2009; 6:26pm
URL: http://imagej.273.s1.nabble.com/Editing-the-FFT-of-a-jpeg-tp3691067p3691069.html

So I tried filling with cntrl+f instead of deleting and managed to instantly
get it to work on both of my computers.  Then, on one of my computers I
tried to screw around a bit and changed the type of the picture from 8-bit
to 32-bit, and it stopped working.  It didn't work when I switched it back
to 8-bit either.  Black is 0, not 255, so that doesn't seem to be the
problem.  I'm not sure if checking the color LUT is the only test for
finding if ImageJ is filling with true black.  I don't know why ImageJ is
being so finicky, but I am writing a procedure for other people to follow
using this method, so I need to know as much as I can about this process.
Does anyone have suggestions of what the problem is and how to fix it?  Thanks.