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Energy Efficient High Quality Image Transmission in Wireless Sensor Networks

Author(s): Ms.Santha devi.P | Dr.ARTHANARIEE A.M | Mr.Sivakumar.M

Journal: International Journal of Innovative Technology and Creative Engineering
ISSN 2045-869X

Volume: 1;
Issue: 9;
Start page: 10;
Date: 2011;
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Keywords: Wireless communication | Image compression | interactive transmission | image quality.

A Simple Wavelet Compression (SWC) processing is proposed to maximize compression and minimize energy cost in WSN (Wireless Sensor Network). Most of the current work, utilize lossy image compression techniques to minimize the resource consumption. The lossy image compression technique reduces the size of the image to a great extent, however the quality of the image being reproduced needs appreciation. The existing work presented, an improved polyomines lossless compression technique, which increases the quality of image at receiving end of the wireless communication by reducing the Peak to Signal Noise ratio and mean square error. In Wireless Sensor Networks, reducing transmission energy consumption is one of the important critical issues. In this paper, we propose a novel Energy Efficient High Quality Image Transmission scheme (EEHQIT) to achieve energy efficient image transmissions in WSNs. EEHQIT scheme is compelling due to its ability of saving individual power consumption over multiple sensors by spreading total transmission consumption. Individual packets describing an embedded wavelet-encoded image exhibit a significantly unequal contribution towards image quality. By leveraging this fact we develop a strategy of appropriately selecting the number of interactive sensors for each packet transmission in order to achieve the highest possible image quality with minimal transmission power consumption. Experimental results show that our proposed mechanism can provide about 2dB higher image quality under the same power budget compared with other transmission approach. Simulation results show up to 85% reduction in the total power consumption achieved by using the proposed strategy.
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