Gait recognition from time-normalized joint-angle trajectories in the walking plane

R. Tanawongsuwan, A. Bobick
Proceedings of the 2001 IEEE Computer Society Conference on Computer Vision and Pattern Recognition. CVPR 2001  
This paper demonstrates gait recognition using only the trajectories of lower body joint angles projected into the walking plane. For this work, we begin with the position of 3D markers as projected into the sagittal or walking plane. We show a simple method for estimating the planar offsets between the markers and the underlying skeleton and joints; given these offsets we compute the joint angle trajectories. To compensate for systematic temporal variations from one instance to the next
more » ... to the next -predominantly distance and speed of walk -we fix the number of footsteps and timenormalize the trajectories by a variance compensated time warping. We perform recognition on two walking databases of 18 people (over 150 walk instances) using simple nearest neighbor algorithm with Euclidean distance as a measurement criteria. We also use the expected confusion metric as a means to estimate how well joint-angle signals will perform in a larger population.
doi:10.1109/cvpr.2001.991036 dblp:conf/cvpr/TanawongsuwanB01 fatcat:oqmarycijvd7xijwzaybloviaq