I have some questions concerning the function "computeFeatures.haralick" in the EBImage package.
At first, things that I have hopefully understood:
The function computes 13 GLCM features for every object in an image. Thus, it computes the GLCM in the same way as eCognition does, which makes me happy :-)
- However, I have not found what is meant by haralick.scales? I have got different results depending on the scale.
- Does the results in the output matrix contain for each GLCM features the mean or range value and of how many directions?
- Is there any possibility to calculate the GLCM per direction (i.e. 45°)?
- What is meant by "haralick.nbins"? - Is that the matrix needed to calcualte the GLCMs? For example eCognition uses a 256 x 256 matrix, thus I would set this parameter to 256.
I found this page "http://earlglynn.github.io/RNotes/package/EBImage/Haralick-Textural-Features.html" which helped me to understand the GLCM, but the questions under "EBImage Explorations" are still open.
I would be very pleased to get any reply :-)