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. Author manuscript; available in PMC: 2009 Jun 23.
Published in final edited form as: Acad Radiol. 2007 Jul;14(7):772–787. doi: 10.1016/j.acra.2007.03.009

Fig. 3.

Fig. 3

The main point of the algorithm is detailed in this figure. The top three rows show the cubes of data that are known along with their histograms and canonical signatures. The bottom three rows show an unknown cube of data with its histogram and signature. The idea of the algorithm is to compare the unknown signature with the known signatures using the EMD as the metric. The unknown cube of data is assigned to the known cube's class for which the signatures are most similar.