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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Ann Biomed Eng. 2013 Jun 15;41(11):2409–2425. doi: 10.1007/s10439-013-0838-y

FIGURE 8.

FIGURE 8

Canny edges extracted from intra-operative and the registered pre-operative image slices overlaid on each other. Red colour represents the non-overlapping pixels of the intra-operative slice and blue colour represents the non-overlapping pixels of the pre-operative slice. Green colour represents the overlapping pixels. The number on each image denotes a particular neurosurgery case. For each case, the left image shows edges for the biomechanics-based warping and the right image shows edges for the BSpline-based registration.