ME	Micro-expression
FACS	Facial Action Coding System
AU	Action unit
LBP-TOP	Local Binary Pattern histograms from Three Orthogonal Planes
HOG	Histogram of Oriented Gradients
HOOF	Histograms of Oriented Optical Flow
GPU	Graphics processing unit
CUDA	Compute unified device architecture
SMIC	Spontaneous micro-expression
CASMEII	Chinese academy of sciences micro-expression
CAS(ME)${}^2$	Spontaneous macro-expressions and micro-expressions
SAMM	Spontaneous actions and micro-movements