CAMERA BASED HEAD-MOUSE - Optimization of Template-Based Cross-Correlation Matching

Tatiana V. Evreinova, Grigori Evreinov, Roope Raisamo

Abstract

There is a challenge to employ video-based input in mobile applications for access control, games and entertainment computing. However, by virtue of computational complexity, most of algorithms have a low performance and high CPU usage. This paper presents the experimental results of testing the reduced spiral search with the sparse angular sampling and adaptive search radius. We demonstrated that a reliable tracking could be provided in a wide range of lighting conditions with the relative brightness of only 16 pixels composing the grid-like template (the grid step of 10-15 pixels). Cross-correlation matching of the template was implemented in eight directions with a shift of one pixel and adaptive search radius. The algorithm was thoroughly tested and after that used in a text entry application. The mean typing speed achieved with the head tracker and on-screen keyboard was of about 6.2 wpm without prediction after 2 hours practice.

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Paper Citation


in Harvard Style

V. Evreinova T., Evreinov G. and Raisamo R. (2007). CAMERA BASED HEAD-MOUSE - Optimization of Template-Based Cross-Correlation Matching . In Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, ISBN 978-972-8865-74-0, pages 507-514. DOI: 10.5220/0002038905070514


in Bibtex Style

@conference{visapp07,
author={Tatiana V. Evreinova and Grigori Evreinov and Roope Raisamo},
title={CAMERA BASED HEAD-MOUSE - Optimization of Template-Based Cross-Correlation Matching},
booktitle={Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP,},
year={2007},
pages={507-514},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002038905070514},
isbn={978-972-8865-74-0},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Second International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP,
TI - CAMERA BASED HEAD-MOUSE - Optimization of Template-Based Cross-Correlation Matching
SN - 978-972-8865-74-0
AU - V. Evreinova T.
AU - Evreinov G.
AU - Raisamo R.
PY - 2007
SP - 507
EP - 514
DO - 10.5220/0002038905070514