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. 2013 Oct 6;10(87):20130459. doi: 10.1098/rsif.2013.0459

Figure 2.

Figure 2.

Steps to track displacement of a single material point: (1) an ROI is created in the undeformed OCT image volume; (2) The ROI undergoes a combination of affine transformations (translation, rotation, shear and stretch); (3) a displacement vector can be extracted when the deformed ROI best matches a co-localized ROI in the deformed image volume.