Res-TCN for NTURGBD Skeletons dataset

Skeleton based action recognition models with TCN variants for learning interpretable representation.

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IMPORTANT: Since the original code release, Keras version has updated. New Keras compatible code with a few minor bug fixes is included under updates/ directory.
train.py: Contains the keras training routine.
Models.py: Contains different variants of Res-TCN
process_skeleton.py: Contains routines for reading in NTURGBD skeleton dataset. This reads in the raw files and creates train/test LMDB files.