A SYSTEM FOR IMAGE/VIDEO OBJECT QUERY BY SHAPE - Video Object Extraction and Representation: Theory and Applications - page 142

Figure 6.10. Steps in Support Structure Extraction a) Order the contour, b) Cal-
culate the Voronoi Order, c) apply Eq. 3.2 from Chapter 3, d) threshold the pixels
and map the pixels onto a graph, e) find a subgraph that is consistent with the
multiresolution property, f) partition the graph into line segments.