Figure 5
From: Tracing retinal vessel trees by transductive inference
Modified Shreve’s ordering. Shreve’s ordering is modified to handle crossovers like A, B and C. For 4-cliques like A and B, when two segments with order μ1 and μ2 meets then the resulting segments are ordered as μ1+μ2. Similarly for 5-clique like C, when three segments with order μ1, μ2 and μ3 meets then the resulting segments are ordered as μ1+μ2+μ3.