Extracting hand articulations from monocular depth images using curvature scale space descriptors

Shao-fan WANG,Chun LI,De-hui KONG,Bao-cai YIN

Fig. 2 Curvature scale space contours for two (a), three (b), four (c), and five (d) straight fingers in three cases: the first row satisfies $\textbf{css}{(t,\sigma)=\{(t,\sigma): k_\sigma(t)=0\}}$, the second row satisfies $\textrm{css}{(t,\sigma)=\{(t,\sigma): 0\leq k_\sigma(t)\leq2.5\}}$, and the third row satisfies $\textrm{css}{(t,\sigma)=\{(t,\sigma): 2\leq k_\sigma(t)\leq2.5\}}$