Re: dummy question about "median"

Posted by dscho on Dec 14, 2006; 2:10pm
URL: http://imagej.273.s1.nabble.com/dummy-question-about-median-tp3700824p3700827.html

Hi,

On Thu, 14 Dec 2006, [hidden email] wrote:

> I've a little doubt about median of an rgb image. Could anybody explain
> me why in next fragment of code "median1" is different from "median2",
> while "stnd.Dev1" and "mean1" are respective the same of "stnd.Dev2" and
> "mean2"?

My gut feeling is that one of the two handles the pixels as a Double
instead of a triplet of bytes.

But then, I really do not know what the median of a color is. The
definition of the median is:

1. sort the values into a list
2. pick the value with the middle index

But how do you sort colors? Is green smaller than blue or larger?

Ciao,
Dscho