Figure 7.
Results for the first test image (Figure 1a): (a) shows the mean angle 
and the median angle 
for increasing dividing steps n, and (b) shows the weighted error entropy, Ew. Both measures 
and 
in (a) yield the correct angle of 25° until around n = 12, confirming the capability of this method for extracting accurate angular data across different length scales. The mean angle 
starts to loose accuracy around n = 13 (upper cut-off point for 
), whereas the median angle is more stable 
up to n = 36 (upper cut-off point for 
). The weighted error entropy in (b) is relatively stable until around n = 13, corresponding to minor changes only in the probability mass functions (PMFs) across these length scales.