INDOOR NAVIGATION AND ASSISTIVE TECHNOLOGIES

Blindness affects approximately 45 million people worldwide. Because of rapid population aging growth, this number is expected to double by the year 2020 .Therefore they need to be informed about persons and objects in their environment and object features may be of importance when navigating a path to a given destination. Blind and vision impaired people would wish to exact information about appropriate paths, dangers, obstacles, distances and critical situations.

The navigation systems for outdoor environments are readily available, navigation within buildings still poses a challenge. The Global Positioning System (GPS), the dominant system offering location information outdoors, suffers a poor indoor performance due to low signal availability, as GPS signals are not designed to penetrate through most construction materials.

Most blind people require assistance to navigate within unfamiliar environments as there is often insufficient information about the buildings available to them. Research focuses to facility management in which a digital representation of the indoor building features is used to facilitate the exchange and interoperability of real-time information in digital format which can assist blind people to independently access unfamiliar building indoor environments. The model driven architecture that can be implemented for way finding and data synchronization, generating, in real-time map for an indoor environment.