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Efficient JPEG 2000 Image Compression Scheme for Multihop Wireless Networks

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Author(s): Mohsen Nasri | Abdelhamid Helali | Halim Sghaier | Hassen Maaref

Journal: TELKOMNIKA
ISSN 1693-6930

Volume: 9;
Issue: 2;
Start page: 311;
Date: 2011;
Original page

Keywords: distributed image compression | energy conservation | JPEG2000 | wireless sensor networks

ABSTRACT
When using wireless sensor networks for real-time data transmission, some critical points should be considered. Restricted computational power, reduced memory, narrow bandwidth and energy supplied present strong limits in sensor nodes. Therefore, maximizing network lifetime and minimizing energy consumption are always optimization goals. To overcome the computation and energy limitation of individual sensor nodes during image transmission, an energy efficient image transport scheme is proposed, taking advantage of JPEG2000 still image compression standard using MATLAB and C from Jasper. JPEG2000 provides a practical set of features, not necessarily available in the previous standards. These features were achieved using techniques: the discrete wavelet transform (DWT), and embedded block coding with optimized truncation (EBCOT). Performance of the proposed image transport scheme is investigated with respect to image quality and energy consumption. Simulation results are presented and show that the proposed scheme optimizes network lifetime and reduces significantly the amount of required memory by analyzing the functional influence of each parameter of this distributed image compression algorithm.
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