Re: Entropy measurement

Posted by Gea O.F. Parikesit on Jul 07, 2010; 4:01am
URL: http://imagej.273.s1.nabble.com/Signal-to-Noise-Ratio-SNR-tp3687681p3687683.html

I am not aware of any existing plugin that measures entropy directly from FFT, but you could easily write a macro for this. That being said, I wonder why would you need the FFT, rather than the grey-values itself? Are you interested in certain spatial frequencies in your images?

Best regards,
Gea Parikesit
Gadjah Mada University
http://gea.ari.googlepages.com/microfluidicsugm


--- On Tue, 6/7/10, Widodo D. Putro <[hidden email]> wrote:

From: Widodo D. Putro <[hidden email]>
Subject: Entropy measurement
To: [hidden email]
Received: Tuesday, 6 July, 2010, 10:53 PM

Dear ImageJ users,

I wonder is there any ImageJ plugin to measure the entropy coefficient derived
from FFT of a stack of images?
I've used the Texture Analyzer plugin by Mr. Cabrera, but it defined the entropy
from gray level co-occurence matrix not from FFT.

Thank you,
Regards.

 --
Widodo D. Putro

Institute of Technology Bandung
Jl. Ganesha 10, Bandung, Indonesia