Title
Adding image constraints to inverse kinematics for human motion capture
Abstract
In order to study human motion in biomechanical applications, a critical component is to accurately obtain the 3D joint positions of the user's body. Computer vision and inverse kinematics are used to achieve this objective without markers or special devices attached to the body. The problem of these systems is that the inverse kinematics is "blinded" with respect to the projection of body segments into the images used by the computer vision algorithms. In this paper, we present how to add image constraints to inverse kinematics in order to estimate human motion. Specifically, we explain how to define a criterion to use images in order to guide the posture reconstruction of the articulated chain. Tests with synthetic images show how the scheme performs well in an ideal situation. In order to test its potential in real situations, more experiments with task specific image sequences are also presented. By means of a quantitative study of different sequences, the results obtained show how this approach improves the performance of inverse kinematics in this application.
Year
DOI
Venue
2010
10.1155/2010/142354
EURASIP J. Adv. Sig. Proc.
Keywords
Field
DocType
image constraint,body segment,human motion,synthetic image,task specific image sequence,computer vision algorithm,computer vision,inverse kinematics,articulated chain,quantitative study
Computer vision,Signal processing,Motion capture,Kinematics equations,Motion detection,Inverse kinematics,Computer science,Image processing,Image segmentation,Inverse problem,Artificial intelligence
Journal
Volume
Issue
ISSN
2010,
1
1687-6180
Citations 
PageRank 
References 
3
0.42
11
Authors
4
Name
Order
Citations
PageRank
Antoni Jaume-I-Capó1469.34
Javier Varona221123.38
Manuel González Hidalgo39918.29
Francisco J. Perales410410.43