Figure 1

Example of RFC following the definition based on paths.(a) The object seed ×, where \(f_{\min }^{\mathcal {S}_{{o}}}(\pi _{a})=8,\: f_{\min }^{\mathcal {S}_{{o}}}(\pi _{b})=1,\:f_{\min }^{\mathcal {S}_{{o}}}({\pi _{c}})=6\:\), and \(\:f_{\min }^{\mathcal {S}_{{o}}}(\pi _{d})=7 \). (b) The background seed (asterisk), where \(f_{\min }^{\mathcal {S}_{{b}}}(\pi _{d})=8,\: f_{\min }^{\mathcal {S}_{{b}}}(\pi _{b})=1,\:f_{\text {min}}^{\mathcal {S}_{{b}}}(\pi _{c})=6\:\), and \(\:f_{\min }^{\mathcal {S}_{{b}}}(\pi _{a})=7 \). (c) Segmentation result via RFC.