Improved background removal through polarisation in vision-based tabletop interface
Eldridge, Ross Rudolph, Heiko Duckworth, Jonathan Wilson, Peter H.
Eldridge, Ross
Rudolph, Heiko
Duckworth, Jonathan
Wilson, Peter H.
Abstract
This paper presents a novel method of enhancing computer assisted motor rehabilitation for brain injury patients by detailing a method of overcoming a significant technical constraint. The focus of our system is three dimen- sional(3D) tracking of upper limb movements on a horizontal tabletop system. We describe a new horizontal table- top system that utilises real-time stereo vision for 3D tracking of user interaction in the workspace. An overview of existing background removal techniques is presented, and their strengths and weaknesses discussed. We then present a novel approach that utilises polarisation of light for background removal. The system uses an LCD panel for the display device, which achieves a more portable system, and also allows for total removal of screen interference by utilising the polarising nature of LCD technology. Initial testing of this approach has proved highly successful. Key benefits are outlined.
Keywords
Date
2007
Type
Conference paper
Journal
Book
Proceedings : 6th IEEE/ACIS International Conference on Computer and Information Science (ICIS 2007)
Volume
Issue
Page Range
326-331
Article Number
ACU Department
School of Behavioural and Health Sciences
Faculty of Health Sciences
Faculty of Health Sciences