Algorithm 16 mergePotentialClusters.

Input: $\eta ,\zeta ,r^{\ast },c^{\ast },{\overrightarrow{P}}_1^s,{\overrightarrow{T}}_1^s,{\overrightarrow{H}}_1^s,{\widehat{\overrightarrow{c}}}_1^s$      Output: ${\overrightarrow{P}}_1^s,{\overrightarrow{T}}_1^s,{\overrightarrow{H}}_1^s,{\widehat{\overrightarrow{c}}}_1^s$

1:if$\eta >\zeta$then 2:  ${\overrightarrow{p}}_{r^{\ast }}^s={\overrightarrow{p}}_{r^{\ast }}^s⌢{\overrightarrow{p}}_{c^{\ast }}^s$ 3:  ${\overrightarrow{u}}_{r^{\ast }}^s={\overrightarrow{u}}_{r^{\ast }}^s⌢{\overrightarrow{u}}_{c^{\ast }}^s$ 4:  ${\overrightarrow{z}}_{r^{\ast }}^s={\overrightarrow{z}}_{r^{\ast }}^s⌢{\overrightarrow{z}}_{c^{\ast }}^s$ 5:  remove ${\widehat{o}}_{c^{\ast }}^s$ from ${\widehat{\overrightarrow{c}}}_1^s$ 6:  update $\widehat{N}=\widehat{N}-1$ 7:end if