Fig. 6.

Structured phantom. Plots of hand motion in (a) x, (b) y, and (c) roll directions, as measured by co-registering digital photographs captured by the OCT probe during scanning. (d) En face OCT at ∼0.6 mm below the phantom surface, acquired with the handheld probe mounted on the benchtop, for a motion-artifact-free reference. Corresponding en face OCT image acquired in handheld (e) uncorrected, and (f) motion-corrected. (g) Uncorrected and (h) corresponding motion-corrected optical palpograms. The area outside of the fiducial marker has been masked out (in grey). $\overline{\sigma }$ is the average stress in kPa, and equivalently, pressure applied to the tissue during the scan. A, interpolation inaccuracy artifacts. D, field curvature artifact.