High-Resolution Images with Minimum Energy Dissipation and Maximum Field-of-View in Camera-Based Wireless Multimedia Sensor Networks

Sensors

Hadi S. Aghdasi¹  Pouya Bisadi¹  Mohsen Ebrahimi Moghaddam¹ 

[1] Faculty of Electrical and Computer Engineering, Shahid Beheshti University, G.C., Tehran, Iran;

关键词: camera-based sensor networks;    high-resolution and wide images;    two-tier network topology;    image stitching;    camera selection problem;    minimum wasted energy;   

DOI  :  10.3390/s90806385

来源: mdpi

【 摘 要 】

High-resolution images with wide field of view are important in realizing many applications of wireless multimedia sensor networks. Previous works that generally use multi-tier topology and provide such images by increasing the capabilities of camera sensor nodes lead to an increase in network cost. On the other hand, the resulting energy consumption is a considerable issue that has not been seriously considered in previous works. In this paper, high-resolution images with wide field of view are generated without increasing the total cost of network and with minimum energy dissipation. This is achieved by using image stitching in WMSNs, designing a two-tier network topology with new structure, and proposing a camera selection algorithm. In the proposed two-tier structure, low cost camera sensor nodes are used only in the lower-tier and sensor nodes without camera are considered in the upper-tier which decreases total network cost as much as possible. Also, since a simplified image stitching method is implemented and a new algorithm for selecting active nodes is utilized, energy dissipation in the network is decreased by applying the proposed methods. The results of simulations supported the preceding statements.

【 授权许可】

CC BY   
© 2009 by the authors; licensee MDPI, Basel, Switzerland