Tracking of object points in a photogrammetric motion capture system

Clive S. Fraser; Juliang Shao

doi:10.1117/12.410876

22 December 2000 Tracking of object points in a photogrammetric motion capture system

Clive S. Fraser, Juliang Shao

Proceedings Volume 4309, Videometrics and Optical Methods for 3D Shape Measurement; (2000) https://doi.org/10.1117/12.410876
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

Target tracking and trajectory building are essential elements of vision-based motion capture systems for biomechanics applications. Optimal performance of multi- camera, real-time video metric system for the recovery of motion analysis parameters depends not only on the incorporation of rigorous photogrammetric processes, but also upon robust and reliable object point tracking. This paper discusses developments related to object point tracking within a motino capture system being developed for use in a biomechanics laboratory. The path generation sequence for object targets is first outlined, after which an account of the formulation of a kinematic model based on the alpha-beta-gamma filter/predictor is provided. The process of tracking in both 2D image space and 3D object space is then discussed, and initial result form practical experiments are summarized. These results indicate that the proposed object tracking and trajectory building approach can provide robust performance and an operation sped which is sufficient to a low real-time 3D target tracking at standard video frame rates and beyond.

Citation Download Citation

Clive S. Fraser and Juliang Shao "Tracking of object points in a photogrammetric motion capture system", Proc. SPIE 4309, Videometrics and Optical Methods for 3D Shape Measurement, (22 December 2000); https://doi.org/10.1117/12.410876

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available