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1 2015

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An augmented reality platform for wearable assisted living systems

Saracchini R. F. V., Catalina C. A.

Journal of Theoretical and Applied Computer Science

2015

Vol. 9, nr 1

56--79

Assisted Living systems aim to improve life quality of their users giving context relevant guidance accordingly with their location and hour of the day. Most of commercial systems depend on complex/expensive infrastructure and still their positional information is not sufficient to take advantage of modern interfacing devices such as head-up displays or pico-projectors. We describe in this paper the design of an Assisted Living system capable to offer such guidance with on-site Augmented Reality, without introducing changes in the environment and using off-the-shelf equipment. The system can take advantage of wearable computing devices with embedded camera by determining the user position and orientation by using Visual Odometry and SLAM techniques. With this data, advices can be exhibited automatically by merging it seamlessly to the environment using augmented reality. In order to assess the efficacy of our system, we performed pilot tests in health care centres and residences using a prototype of a low-cost wearable device which displays the information through an embedded pico-projector.