2D	two-dimensional
3D	three-dimensional
A	affine
C2C	cloud-to-cloud
CLSM	confocal laser scanning microscope
DEP	diesel exhaust particulate
DOF	depth of field
EVT	Everhart Thornley
ICP	iterative closest point
LSQ	least squares
MLESAC	maximum likelihood estimation sample consensus
OA	optical axis
OR	orthographic
GM	guided matching
RANSAC	random sample consensus
RMSE	root-mean-square error
SC	scaled orthographic
SEM	scanning electron microscope
SGBM	semi global block matching
SIFT	scale invariant feature transform
WD	working distance
WP	weak perspective