Daily changes of Arctic sea ice concentration in shades of green and red

Posted by arcticio on Jul 25, 2011; 7:58pm
URL: http://imagej.273.s1.nabble.com/Daily-changes-of-Arctic-sea-ice-concentration-in-shades-of-green-and-red-tp3683715.html

Hi,

I want to visualize and animate daily changes of Arctic sea ice concentration as measured by satellites, losses should appear as shades of red, growth of green. I tried image calcuator/subtract with 32bit target, reducing to 8bit and applying a custom LUT. Result looks promising (see below), however this approach centers the histogram of the resulting image on the most common value, which depends on chosen dates.

So either I need to create a custom LUT for each pair of days (very time consuming) or a possibility (unknown so far) to detect this value and let a script shift the LUT by an offset or try a completely different approach (hopefully exists).

It would be great if someone could point to next step.

Any feedback is welcome.

-- Torsten