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Aerial Obstacle Detection With 3-D Mobile Devices | IEEE Journals & Magazine | IEEE Xplore

Aerial Obstacle Detection With 3-D Mobile Devices


Abstract:

In this paper, we present a novel approach for aerial obstacle detection (e.g., branches or awnings) using a 3-D smartphone in the context of the visually impaired (VI) p...Show More

Abstract:

In this paper, we present a novel approach for aerial obstacle detection (e.g., branches or awnings) using a 3-D smartphone in the context of the visually impaired (VI) people assistance. This kind of obstacles are especially challenging because they cannot be detected by the walking stick or the guide dog. The algorithm captures the 3-D data of the scene through stereo vision. To our knowledge, this is the first work that presents a technology able to obtain real 3-D measures with smartphones in real time. The orientation sensors of the device (magnetometer and accelerometer) are used to approximate the walking direction of the user, in order to look for the obstacles only in such a direction. The obtained 3-D data are compressed and then linearized for detecting the potential obstacles. Potential obstacles are tracked in order to accumulate enough evidence to alert the user only when a real obstacle is found. In the experimental section, we show the results of the algorithm in several situations using real data and helped by VI users.
Published in: IEEE Journal of Biomedical and Health Informatics ( Volume: 19, Issue: 1, January 2015)
Page(s): 74 - 80
Date of Publication: 07 May 2014

ISSN Information:

PubMed ID: 24816615

Funding Agency:


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