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Journal of Healthcare Engineering
Volume 2018, Article ID 6916204, 6 pages
Research Article

Projection Mapping User Interface for Disabled People

1Automation Department, Faculty of Electrical and Electronics Engineering, Kaunas University of Technology, Studentu St. 50-154, Kaunas, Lithuania
2Centre of Real Time Computer Systems, Kaunas University of Technology, Baršausko St. 59-338a, Kaunas, Lithuania

Correspondence should be addressed to Julius Gelšvartas; moc.liamg@satravsleg.suiluj

Received 28 September 2017; Accepted 15 January 2018; Published 1 March 2018

Academic Editor: Reima Suomi

Copyright © 2018 Julius Gelšvartas et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Difficulty in communicating is one of the key challenges for people suffering from severe motor and speech disabilities. Often such person can communicate and interact with the environment only using assistive technologies. This paper presents a multifunctional user interface designed to improve communication efficiency and person independence. The main component of this interface is a projection mapping technique used to highlight objects in the environment. Projection mapping makes it possible to create a natural augmented reality information presentation method. The user interface combines a depth sensor and a projector to create camera-projector system. We provide a detailed description of camera-projector system calibration procedure. The described system performs tabletop object detection and automatic projection mapping. Multiple user input modalities have been integrated into the multifunctional user interface. Such system can be adapted to the needs of people with various disabilities.