GLCM Entropy Feature Calculation

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Vincy Y
Vincy Y 2019-2-6
评论： Image Analyst 2024-3-4
This is my Entropy calculation from glcm matrix
but the result is
the entropy formula i used here is correct ?

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采纳的回答

Image Analyst
Image Analyst 2019-2-6
I believe you can use the built-in graycoprops() to get that value.
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Image Analyst
Image Analyst 2024-3-4
Since you say you must have it without using built-in functions, then it must be your homework and I'm sure your professor would not allow anyone turning in my/our code as their own. Anyway, since it's been 4 years, I'm sure it's already been done and turned in. For others who want a demo on how to compute the gray level cooccurrence matrix using the built-in function, see attached m-file.

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Luis Frauca Trasobares
If you have your GLCM matrix correct ( you can use graycomatrix), next step is to normalized that matrix, and after that you can do your calculus or formula-code that you showed here.
Also take care of the 0 values because if you put them in the log it will be problematic (add eps to the log to solve this or control your grey levels without zero level, for example).

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