Table of Contents Author Guidelines Submit a Manuscript
Advances in Multimedia
Volume 2015, Article ID 380849, 7 pages
http://dx.doi.org/10.1155/2015/380849
Research Article

Preprocessing Techniques for High-Efficiency Data Compression in Wireless Multimedia Sensor Networks

1Agency for Defense Development, Daejeon 305-600, Republic of Korea
2School of Information and Communication Engineering, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea

Received 29 August 2014; Accepted 3 November 2014

Academic Editor: Seungmin Rho

Copyright © 2015 Junho Park and Jaesoo Yoo. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We have proposed preprocessing techniques for high-efficiency data compression in wireless multimedia sensor networks. To do this, we analyzed the characteristics of multimedia data under the environment of wireless multimedia sensor networks. The proposed preprocessing techniques consider the characteristics of sensed multimedia data to perform the first stage preprocessing by deleting the low priority bits that do not affect the image quality. The second stage preprocessing is also performed for the undeleted high priority bits. By performing these two-stage preprocessing techniques, it is possible to reduce the multimedia data size in large. To show the superiority of our techniques, we simulated the existing multimedia data compression scheme with/without our preprocessing techniques. Our experimental results show that our proposed techniques increase compression ratio while reducing compression operations compared to the existing compression scheme without preprocessing techniques.