Future Challenges

Although a large number of gait recognition algorithms have been reported, it should be noted that gait recognition is still in its infancy. This is because previous work was mainly implemented under some simplified and controlled conditions, e.g., no occlusion during human walking, relatively plain background, the lack of view generality except [142, 103, 102], etc (see Table 8.1). Although reporting good recognition performance, most existing algorithms were usually evaluated on a small and non-realistic database. Further, recognition rates have not yet far reached a possible upper bound even under the above two conditions.