Table 3. Default Parameters and Valid Ranges for the LBP Operator.

Parameter Name	Type	Default Value	Valid Range
Neighbours P	INT	8	${\text{Valid}}_P=\left\{P\in {\mathbb{Z}}^{+}|1\le P\le 32\right\}$
Radius R	FLOAT	1.0	${\text{Valid}}_R=\left\{R\in {ℝ}^{+}|R\ge 1.0\right\}$
Smooth (Gaussian)	BOOLEAN	false	{true | false}
Kernel Size k	INT	3	${\text{Valid}}_k=\left\{2i+1\in {\mathbb{Z}}^{+}|i\in {\mathbb{N}}^{+},i\le 50\right\}$
Cells C	INT	1	${\text{Valid}}_C=\left\{C\in {\mathbb{N}}^{+}|1\le C\le \max \left\{M,N\right\}\right\}$, where M, N are height and width of the image

Default parameters are set when the operator descriptor is created. The descriptor also checks for valid ranges on instantiation in defined sets, see last column.