The eCognition documentation states that 8 bit data are used for Haralick texture calculations and that the grey-level co-occurence matrix is 256 X 256.  Most software I've used uses 16 or 32 grey levels (4 or 5 bit).  I would only be concerned about processing time, except that I've read a few sources saying that too many grey levels can cause poor estimates of some of the underlying statistics (see p. 17 here https://prism.ucalgary.ca/handle/1880/51900 and this article https://www.tandfonline.com/doi/abs/10.5589/m02-004).  Does anyone know why the developers chose 8 bit?  Are there other supporting studies I don't know about?

1 comment

Recent Discussions

Need more help?

Enter Knowledge Base Contact Support