Snapshot: A Self-Calibration Protocol for Camera Sensor Networks

— A camera sensor network is a wireless network of cameras that are designed for ad-hoc deployment. The camera sensors in such a network need to be properly calibrated by determining their location, orientation, and range. This paper presents Snapshot, an automated calibration protocol that is explicitly designed and optimized for camera sensor networks. Snapshot uses the inherent imaging abilities of the cameras themselves for calibration. Further, unlike some vision-based techniques that require tens of reference points for calibration, Snapshot can determine the location and orientation of a camera sensor using only four reference points. Our techniques are based on principles from optics and geometry and are designed to work with low-fidelity, low-power camera sensors that are typical in sensor networks. As experimental evaluation of our prototype implementation shows that Snapshot yields an error of 1-2.5 degrees when determining the camera orientation and 5-10cm when determini...

• Type: Conference
• Year: 2006
• Where: BROADNETS
• Authors: Xiaotao Liu, Purushottam Kulkarni, Prashant J. Shenoy, Deepak Ganesan
• Keywords: BROADNETS 2006, Camera Sensor, Camera Sensor Networks, Sensor Network