Monocular Vision-Based Distributed Node Localization for Wireless Multimedia Sensor Networks

In this article, the theory of computer vision was applied to the issue of node localization in wireless multimedia sensor networks, and a new distributed locating algorithm based monocular vision was proposed. Based on directional sensing model of the camera and the pinhole imaging model, sensor node was located on a two-dimension plane, using simple geometric transformations of monocular machine vision with the third-dimensional information-the height of node, and the orientation of unknown node was determined using the inter-observation information between nodes. Then, the collaboration mechanism among multi-node was discussed. Finally, the simulation and analysis results verified the high accuracy and strong robust of the algorithm.