Figure 9.

Total errors (applied versus extracted) in (a) displacement magnitude, (b) displacement direction, and in (c) effective strain are depicted as functions of speckle noise amount and signal averaging with varying illumination conditions (left column; ROI size: 31 × 31 × 21 voxels) and application of adaptive compensation (right column; ROI size: 31 × 31 × 21 voxels). Here, the deformed OCT volume was obtained after applying a three-dimensional radial expansion deformation with nonlinear tissue thinning and posterior laminar bowing to the undeformed (baseline) OCT volume.