Table 2. Gait features of PD and SCA3 and corresponding gait parameters computed by FLLIT.

	Gait features of disease
SCA3	Veering	Erratic foot placement and leg crossing over	Lurching steps	Short strides	Action tremor
PD	Not a feature	Not a feature	Leg rigidity	Rigidity, Shuffling	Resting tremor
Measurement Parameter	Number of body turn events	Footprint regularity	Size of leg domains, degree of domain overlap	Stride length	Irregularities in leg traces

Abbreviations: FLLIT, Feature Learning-based Limb segmentation and Tracking; PD, Parkinsons Disease; SCA3, Spinocerebellar ataxia Type 3