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Help concerning Temperature Map

Posted by jgodeke on May 06, 2011; 4:45pm
URL: http://imagej.273.s1.nabble.com/Help-concerning-Temperature-Map-tp3684660.html

Hello!

I´ve spend some time with imagej in the last weeks because i have a difficult task to solve.

Now that i have some results, i´m not that happy with i would like to know if someone knows a better solution.
original image
This is the source temperature map. Aim is to segment connected areas with the same/similar temperature to define the average size. Actual temperature of a "cell" is not of concern.
This is my solution:
my solution
edit:(I despeckled the image)
I selected red green and blue areas via color thresholding separately and used watersheding to receive the outlines which i copied over the actual image in photoshop. The average area is 182 pixels which "should" be rather something like 120 pixels. The lake in the top middle-left is segmented though i don´t know why and some other areas too.

I would be very happy if someone knows a plugin like watershed which produces better results!

Thank you,

Jonathan