Algorithm 1 Occlusion.

1:procedureocclude($x,w_{size},w_{idx}$) 2:    $len\leftarrow$length(x) 3:    $x_{occ}\leftarrow$copy(x) 4:    $o_v\leftarrow 0$        ▹ user-defined occlusion value. 5:    $start\leftarrow w_{size}·w_{idx}$ 6:    $end\leftarrow start+w_{size}$ 7:    if $end>len$ then 8:        $end\leftarrow len$ 9:    end if 10:    for $i\leftarrow start,end$ do 11:        $x_{occ}\left[i\right]\leftarrow o_v$        ▹ window occlusion 12:    end for 13:    return $x_{occ}$ 14:end procedure