What is the LUT meaning?

Posted by panovr on
URL: http://imagej.273.s1.nabble.com/What-is-the-LUT-meaning-tp3702935.html

Hi,
  I find that ImageJ has some commands like "Image -> Color -> Show LUT"
use LUTs, and it also has a subfolder named "Luts".
  What is the meaning of LUT? How to use LUT?
  Thanks!

Yili