The Dynamic Model Embed in Augmented Graph Cuts for Robust Hand Tracking and Segmentation in Videos

Algorithm 1

An overview of the proposed algorithm.

Step  1. Initialization (at time )

(i)  : the number of tracked hands

(ii) : the displacement of one interesting point from time to

(iii) : minimum number of interesting points

(iv) Manually Initialize the sets , (such as at time in Figures 6–12)

   , .

(v)  Find interesting points in via good-feature-to-track [7, 21].

   For at time

Step  2.

(i)  Find interesting points using via optical flow [22].

(ii) If obtain the final interest points .

(iii) Compute the hands mean velocity , using via (11).

(iv) Predict the sets , using .

Step  3.

   Build the graph and apply -expansion via (19).

Step  4.

   If < (the number of interest points below a given threshold )

   Update interesting points in the region via good-feature-to-track [7, 21].

   If <

  Return to Step  2.