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Vision assistant: A human-computer interface based on adaptive eye-tracking

: Hardzeyeu, V.; Klefenz, F.; Schikowski, P.


Brebbia, C.A.:
Design and nature III : Comparing design in nature with science and engineering
Southampton: WIT Press, 2006 (WIT transactions on ecology and the environment 87)
ISSN: 1743-3541
ISBN: 1-8456-4166-3
ISBN: 9781845641665
International Conference on Comparing Design in Nature with Science and Engineering <3, 2006, New Forest>
Conference Paper
Fraunhofer IDMT ()

The Vision Assistant is designed as an intelligent tool to assist people with different disabilities. The goal of this project is to replace the mouse and keyboard by an adaptive eye-tracker system (so called mouseless cursor) which will help to establish a universal and easy-to-use human-computer interface. Using a camera, it works with a pattern recognition algorithm based on a Hough-transform core to process the streaming image sequences. This technique is known for its performance in locating given shapes. In particular, it is used to extract the shapes that relate to the human eye and analyze them in real-time with the purpose of getting the position of an eye in an incoming image and interpreting it as the reference position of a mouse cursor on the user's monitor. The possibility of the Hough transform parallelization and its execution on the Hubel-Wiesel Neural Network for ultra fast eye-tracking is also discussed in this paper. The results of several experiment s in this paper proved that the system performs quite well with different colours of the subjects' eyes as well as under different lighting conditions. In the conclusion we paid attention to the problems of further improvement of the functional and algorithmic parts of the Vision Assistant.