Title
Upper body motion recognition based on key frame and random forest regression
Abstract
There are limited approaches using Kinect for upper body motion recognition. Most of the available approaches are conducted when there is no joint occlusion, though some performed with joint occlusion only demonstrated recognition of a few motions at low recognition rates. This paper utilizes OptiTrack and its supporting software to obtain and transfer data into a human skeleton coordinates using Kinect v2, and selects the vector among key joint points and angles as the feature values; the AP clustering algorithm was adopted for the key frames of motions which are marked; then we conduct relative normalization of the feature values, and use the method of random forest regression to realize two functions: (1) conduct derivation based on joint offset of frames detected with Kinect v2 from those detected with OptiTrack, learn the joint offset regression function, and correct the skeleton based on the predictions on joint offset; (2) determine the motions based on predicted posture. This paper performs recognition of 8 types of upper body motions at an average accuracy of 90.86%.
Year
DOI
Venue
2020
10.1007/s11042-018-6357-y
Multimedia Tools and Applications
Keywords
Field
DocType
Upper body motion recognition, Upper limb motion, Kinect V2, AP clustering algorithm, Key frame, Random forest regression
Computer vision,Normalization (statistics),Pattern recognition,Motion recognition,Computer science,Human skeleton,Software,Artificial intelligence,Key frame,Random forest,Cluster analysis,Offset (computer science)
Journal
Volume
Issue
ISSN
79
7-8
1573-7721
Citations 
PageRank 
References 
0
0.34
14
Authors
3
Name
Order
Citations
PageRank
Bo Li117167.08
Baoxing Bai221.04
Cheng Han333.43