Table 5.

Set of parameters of ${\mathrm{\Omega }}_d$ for the CRF model.

Parameter	Form	Number of parameters	Use
${\theta }_d$	$1\times 3$ vector	3	Weight bias vector used to balance the labels occurrences
$H_d$	$3\times 3$ symmetrical matrix	6	Transition matrix between classes at depth $d$
$V{+}_d$	$3\times 3$ upper triangular matrix	5	Transition matrix between classes between $d$ and $d+1$
$V{-}_d$	$3\times 3$ lower triangular matrix	5	Transition matrix between classes between $d$ and $d-1$