Application of multiple-wireless to a visual localisation system for emergency services

Abstract—In this paper we discuss the application of multiplewireless technology to a practical context-enhanced service system called ViewNet. ViewNet develops technologies to support enhanced coordination and cooperation between operation teams in the emergency services and the police. Distributed localisation of users and mapping of environments implemented over a secure wireless network enables teams of operatives to search and map an incident area rapidly and in full coordination with each other and with a control centre. Sensing is based on fusing absolute positioning systems (UWB and GPS) with relative localisation and mapping from on-body or handheld vision and inertial sensors. This paper focuses on the case for multiple-wireless capabilities in such a system and the benefits it can provide. We describe our work of developing a software API to support both WLAN and TETRA in ViewNet. It also provides a basis for incorporating future wireless technologies into ViewNet. I

On the Choice and Placement of Wearable Vision Sensors

This paper discusses two of the most important design considerations for a wearable device with visual sensing: what kind of sensor to use and where to place it. While nature and computer vision have explored a wide range of imaging techniques, wearables have mostly viewed the world through conventional narrow-view passive cameras designed for nonwearable applications, which are attached to the wearer's head. The rationale presented here for sensor selection and the novel methodology developed for objectively studying sensor placement have informed the development of a number of visual wearables. © 2009 IEEE