RF Based Talking Signage for Blind Navigation

Camera-Based Signage Detection and Recognition for Blind Persons

Signage plays an important role for wayfinding and navigation to assist blind people accessing unfamiliar environments. In this paper, we present a novel camera-based approach to automatically detect and recognize restroom signage from surrounding environments. Our method first extracts the attended areas which may content signage based on shape detection. Then, ScaleInvariant Feature Transform...

Visual Navigation for the Blind

We present a real-time vision system to assist blind and visually impaired persons. This system complements the white cane, and it can be used both indoor and outdoor. It detects borders of paths and corridors, obstacles within the borders, and it provides guidance for centering and obstacle avoidance. Typical obstacles are backpacks, trash cans, trees, light poles, holes, branches, stones and ...

Outdoor/Indoor Vision-Based Localization for Blind Pedestrian Navigation Assistance

RFID-based Direction Finding Signage System (DFSS) for Healthcare Facilities

As RFID technology matures, it has huge potential for numerous applications in disparate fields of study. Due to the potential benefit and transformational technology that RFID promises, the United States Department of Defense (DoD) is dedicated to adopting passive RFID technology (United States Department of Defense suppliers’ passive RFID Information guide version 10.0, 2008). RFID has potent...

Indoor navigation systems for blind people

Indoor navigation systems must deal with absence of GPS signals, since they are only available in outdoor environments. Therefore, indoor systems have to rely upon other techniques for positioning users. Recently various indoor navigation systems have been designed and developed to help visually impaired people. In this paper an overview of some existing indoor navigation systems for visually i...