Interactive tracking of movable objects for the blind on the basis of environment models and perception-oriented object recognition methods

Authors:
Andreas Hub;Tim Hartter;Thomas Ertl
Affiliations:
University of Stuttgart, Universitätsstraβe, Stuttgart, Germany;University of Stuttgart, Universitätsstraβe, Stuttgart, Germany;University of Stuttgart, Universitätsstraβe, Stuttgart, Germany
Venue:
Proceedings of the 8th international ACM SIGACCESS conference on Computers and accessibility
Year:
2006

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Abstract

In previous work we have presented a prototype of an assistant system for the blind that can be used for self-localization and interactive object identification of static objects stored within 3D environment models. In this paper we present a new method for interactive tracking of various types of movable objects. The state of fixed movable objects, like doors, can be recognized by comparing the distance between sensor data and a 3D model. For the identification and model-based tracking of free movable objects, like chairs, we have developed an algorithm that is similar to human perception, based on shape and color comparisons to trained objects. Further, using a common face detection algorithm, our assistant system informs the user of the presence of people, and enables the localization of a real person based on interactive tracking of virtual models of humans.