1:	procedure Routing $\left({\widehat{\mathit{u}}}_{x,y\mid t_i^{\mathcal{l}}},d,\mathcal{l},x,y\right)$
2:	for all capsule types $t_i^{\mathcal{l}}$ at position (x,y) and capsule type $t_j^{\mathcal{l}+1}$ at position (x, y): $b_{t_i^{\mathcal{l}}\mid x,y}\leftarrow 0$.
3:	for d iterations do
4:	for all capsule types $t_i^{\mathcal{l}}$ at position (x,y): ${\mathbf{r}}_{t_i^{\mathcal{l}}}\leftarrow \mathrm{softmax}\left({\mathbf{b}}_{t_i^{\mathcal{l}}}\right)$ ⊳softmax computes Eq. 7
5:	for all capsule types $t^{\mathcal{l}+1}$ at position $(x,y):{\mathit{p}}_{x,y}\leftarrow {\sum }_n{r}_{t_i^{\mathcal{l}}\mid x,y}{\widehat{\mathit{u}}}_{x,y\mid t_i^{\mathcal{l}}}$
6:	for all capsule types $t_j^{\mathcal{l}+1}$ at position $(x,y):{\mathit{v}}_{x,y}\leftarrow \text{squash}\left({\mathit{p}}_{x,y}\right)$ ⊳ squash computes Eq. 8
7:	for all capsule types $t_i^{\mathcal{l}}$ and all capsule types $t_j^{\mathcal{l}+1}:b_{t_i^{\mathcal{l}}\mid x,y}\leftarrow b_{t_i^{\prime }\mid x,y}+{\widehat{\mathit{u}}}_{x,y\mid t_i^{\mathcal{l}}}\cdot {\mathbf{v}}_{x,y}$
	return ${\mathbf{v}}_{x,y}$