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Re: gray-level co-occurrence matrix (GLCM) [message #89733 is a reply to message #71148]

Sun, 23 November 2014 10:53

lecacheux.alain
Messages: 325
Registered: January 2008

Senior Member

Le mardi 1 juin 2010 15:33:50 UTC+2, j.co...@gmail.com a écrit :
> Is there an efficient and versatile gray-level co-occurence matrix
> (GLCM) routine in IDL, or in someone's library? Found routines called
> "graycomatrix" and "graycoprops" for MATLAB. Anything like that for
> IDL?

For computing GLCM of an image IMG (2D-array of bytes), I would simply do:

n = N_elements(img)
;left shift the image array
img_shifted = shift(img,1,0)
;vectorize both arrays
img = reform(img,n)
img_shifted = reform(img_shifted,n)
;compute GLCM
glcm = hist_2D(img,img_shifted,MIN1=0,MIN2=0)

alx.

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[Message index]

		gray-level co-occurrence matrix (GLCM) By: j.coenia@gmail.com on Tue, 01 June 2010 06:33
		Re: gray-level co-occurrence matrix (GLCM) By: mediterraneo on Sat, 22 November 2014 12:45
		Re: gray-level co-occurrence matrix (GLCM) By: lecacheux.alain on Sun, 23 November 2014 10:53

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