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. Author manuscript; available in PMC: 2010 Mar 16.
Published in final edited form as: IEEE Trans Med Imaging. 2009 Jul 21;28(12):1986–1996. doi: 10.1109/TMI.2009.2027117

Fig. 5.

Fig. 5

Expansion of two planes, namely P1 and P2 with normal vectors n1 and n2 respectively, to the boundary of a box: (a) expansion results when the two planes (P1 and P2) are represented separately by an implicit function; and (b) expansion results when the two planes (P1 and P2 ) are represented by an implicit function as a unit. The red dashed lines indicate the expansion results.