LBP-TOP [18]	Local Binary Patterns on Three Orthogonal Planes
LBP-SIP [20]	Local Binary Pattern with Six Intersection Points
FDM * [14]	Facial Dynamics Map
MDMO * [13]	Main Directional Mean Optical-flow
Sparse MDMO * [15]	Sparse Main Directional Mean Optical-flow
HIGO * [8]	Histogram of Image Gradient Orientation
STLBP-IP * [22]	Spatiotemporal Local Binary Pattern with an Integral Projection
DISTLBP-RIP * [23]	Discriminative Spatiotemporal Local Binary Pattern with Revisited Integral Projection
LCBP * [21]	Local Cube Binary Patterns
ELBPTOP * [42]	Extended Local Binary Patterns on Three Orthogonal Planes
Bi-WOOF+Phase * [43]	Bi-Weighted Oriented Optical Flow with phase information
ELRCN * [24]	Enriched Long-term Recurrent Convolutional Network
3D flow-based CNN * [26]	3D flow-based convolutional neural networks
TSCNN * [28]	Transferring Long-term Convolutional Neural Network
SSSN * [44]	Single-Stream Shallow Network
DSSN * [44]	Dual-Stream Shallow Network