Algorithm 1. Rope-strand segmentation and correction method based on steel wire rope segmentation template.

Inputs: wire rope image $R\left(x,y\right)$, steel wire rope segmentation template $I_{SEG}\left(x,y\right)$ Output: $N\left(x,y\right)$ with strand edge markers 1: detect $R\left(x,y\right)$’s edge with FoGDbED detector and get edge image $C\left(x,y\right)$ 2: $d=1, R_{max}=0, max=1$ 3: detect edge image $C\left(x,y\right)$ with FoGDbED detector 4: $I_{SEG}\left(x,y\right)$ Shift distance 1 to get $M_1\left(x,y\right)$ with vector $\left(dx,dy\right)$ 5: get $S_1\left(x,y\right)$ with Formula (7) and get $R_1$ with Formula (8) 6: $R_{max}=R_1, max=1$ 7: while $d\le D$ 8:   $d$++; 9:   $I\left(x,y\right)$ Shift distance $d$ to get $M_j\left(x,y\right)$ with vector $\left(dx,dy\right)$ 10:   get $S_j\left(x,y\right)$ with Formula (7) and get $R_j$ with Formula (8) 11:  if $R_{max}<R_j$ 12:    $R_{max}=R_j,max=d$ 13:   end if 14: end while 15: $N\left(x,y\right)=M_{max}\left(x,y\right)$ 16: return $N\left(x,y\right)$