HC	hand configuration
IMU	inertial measurement unit
JPEG	Joint Photographic Experts Group, ISO/IEC 10918
LIBRAS	Brazilian Sign Language (Língua Brasileira de Sinais)
LSA	Argentinian Sign Language (Lengua de Señas Argentina)
LSE	Spanish Sign Language (Lengua de Señas Española)
LSM	Mexican Sign Language (Lengua de Señas Mexicana)
LSTM	long short-term memory
MKV	Matroska video
MLP	multilayer perceptron
MSLR	Mexican Sign Language Recognition dataset
MP4	MPEG-4 Part 14, ISO/IEC 14496-14:2003
NHG	non-hand gesture
NN	neural network
NPY	NumPy standard binary file format
PJM	Polish Sign Language (Polski Język Migowy)
PSL	Pakistan Sign Language
RGBD	red, green, blue, and depth
RNN	recurrent neural network
sEMG	surface EMG
SL	sign language
SLR	sign language recognition
SVM	support vector machine
SWF	small web format
TSL	Turkish Sign Language
YOLO	you only look once