Table 5.

Ablation study on directional prior.

DconnNet	$\mathit{D}\mathit{S}\mathit{C}$	$\mathit{D}\mathit{S}{\mathit{C}}_{\mathit{v}}$	$\mathit{A}\mathit{V}\mathit{D}$	$\mathit{B}\mathit{A}\mathit{C}\mathit{C}$
w/o. prior	86.3	72.3	0.023	89.1
w/. prior	87.7	76.6	0.020	90.5