Keyframe Extraction Algorithm for Continuous Sign-Language Videos Using Angular Displacement and Sequence Check Metrics

Table 5

Comparison of the FSC2 keyframe extraction algorithm with other algorithms on parameters.

Methods	T	DI	S	C
Pixel difference [13]
DTW [42]
Gradient based [27]
Sampling [29, 33]
Sampling + DTW [14]
Clip summary [41]
Zernik’s moment [35]
MME [24]
Hand features [39]
Edge detection + DTW [37]
Hybrid cluster [38]
FSC2 keyframe extraction (proposed)

T: static threshold dependency, DI: data independency, S: stability, and C: continuity.