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. Author manuscript; available in PMC: 2012 Feb 27.
Published in final edited form as: Med Image Comput Comput Assist Interv. 2011;14(Pt 2):191–199. doi: 10.1007/978-3-642-23629-7_24

Figure 2. The importance of orientation information for successful clustering.

Figure 2

Clustering of the trajectories seeded from the ROI in Fig. 1a: (a) When orientation information is not used, some CB trajectories are falsely assigned to CC. (b) These trajectories are removed as outliers when orientation information is used. (c) Orientation information enables successful clustering of CB trajectories that are spatially close to CC but differ in shape.