FS	Feather scoring
IRT	Infrared thermography
TOF	Time-of-flight
LiDAR	Structured light cameras or light detection and ranging
RGB-D-T	RGB-Depth-Thermal
ICP	Iterative Closest Point
FCN	Fully convolutional networks
AANet	Adaptive aggregation network
AA Modules	Adaptive Aggregation Modules
ISA	Intra-Scale Aggregation
CSA	Cross-Scale Aggregation
RedNet	Residual encoder–decoder network
ResNet-50	Residual network with 50 layers
SGD	Stochastic gradient descent
MSAC	M-Estimate Sample Consensus
XOR	Exclusion-or
$R^2$	Coefficient of determination
RMSE	Root mean square error
PA	Pixel accuracy
IoU	Intersection-over-union
MoH	Moderate heat
MoC	Moderate cold
SGBM	Semi-Global Block Matching
AD-Census	Absolute differences measure and census transform
PMS	PatchMatch Stereo