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Localization Using Low-Resolution Optical Sensors

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5 Author(s)
Massey, T. ; Univ. of Los Angeles, Los Angeles ; Kapur, R. ; Dabiri, F. ; Linh Nam Vu
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In wireless sensor networks, the data collected from numerous low end sensors can be equivalent or superior to a few high fidelity sensors. In this paper, we evaluate the validity of this concept with low-resolution optical sensors. We implemented passive localization using visual object identification techniques on a field programmable gate array (FPGA) sensor platform. The complexity, memory utilization, and accuracy of our algorithms were analyzed for performance on a resource constrained environment. We show that low-resolution optical sensors can accurately localize objects on a global two dimensional plane. We also present a model that quantifies fidelity versus scale for optical sensors. Using our model and application, we demonstrate that low-fidelity optical sensors are an effective tool in sensor networks and at a certain scale can provide superior coverage of an area over a high-resolution camera. This analysis lays the groundwork for future advances in optical sensors.

Published in:

Mobile Adhoc and Sensor Systems, 2007. MASS 2007. IEEE International Conference on

Date of Conference:

8-11 Oct. 2007