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Detection of indoor and outdoor stairs
Shahrabadi, S.; Rodrigues, J. M. F.; du Buf, J. M. H.There are a few applications in which stairs must be detected, for example for aiding blind persons during navigation and for autonomous robots which must rely on vision. . In this paper we present a very simple algorithm for detecting stairs, both in indoor and outdoor environments, when the camera is at a distance of approximately five meters from the stairs. The problem is hard to solve due to different factor...
Realtime local navigation for the blind: detection of lateral doors and sound i...
Moreno, M.; Shahrabadi, S.; José, João; du Buf, J. M. H.; Rodrigues, J. M. F.Worldwide there are about 285 million visually impaired persons, of which 39 million are blind and the others have low vision. Almost all systems designed to assist them are quite complex and expensive, but most blind persons do not have advanced technical assistance and they are rather poor. We are therefore developing a low-cost navigation aid which can be afforded by almost all blind persons: basically, the ...
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