Table 2.

Types of descriptors. Intensity, texture and combined intensity and texture histograms were used as descriptors for training machine learning models.

Descriptor	Descriptor number
Hist(H), Hist(E)	1
Hist(H)	2
Hist(H), ${\mathrm{LBP}}_{8,1}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{8,1}\left(H\right)$	3
Hist (H), Hist (E), ${\mathrm{LBP}}_{8,1}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{8,1}\left(H\right)$, ${\mathrm{LBP}}_{8,1}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{8,1}\left(E\right)$	4
${\mathrm{LBP}}_{8,1}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{8,1}\left(H\right)$,	5
${\mathrm{LBP}}_{8,1}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{8,1}\left(H\right)$, ${\mathrm{LBP}}_{8,1}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{8,1}\left(E\right)$	6
Hist(H), ${\mathrm{LBP}}_{24,3}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{24,3}\left(H\right)$	7
Hist(H), Hist(E), ${\mathrm{LBP}}_{24,3}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{24,3}\left(H\right)$, ${\mathrm{LBP}}_{24,3}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{24,3}\left(E\right)$	8
${\mathrm{LBP}}_{24,3}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{24,3}\left(H\right)$,	9
${\mathrm{LBP}}_{24,3}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{24,3}\left(H\right)$, ${\mathrm{LBP}}_{24,3}^{\mathrm{riu}2}\times {\mathrm{VAR}}_{24,3}\left(E\right)$	10