Collaborative image compression with error bounds in wireless sensor networks for crop monitoring

Zhang, L. and Xiao, D. (2012) Collaborative image compression with error bounds in wireless sensor networks for crop monitoring. Computers and Electronics in Agriculture, 89. pp. 1-9.

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Abstract

Using the correlation characteristic between the reference image may reduce transmission energy in wireless sensor networks. However, as crop images are usually captured periodically and the images are easily influenced by the peripheral environment during capture, transmitting the subtraction information of crop images may consume large amounts of energy. Moreover, sensor nodes should provide sufficiently accurate images for evaluating crop status according to the crop conditions. A compression scheme should be designed to compress the subtraction information and to ensure reconstruction image quality. In this paper, based on the properties of non-standard Haar transformation, we apply non-standard Haar transformation to decompose the subtraction crop images, and we use the error threshold method to compress crop images and to ensure image quality. Experimental results show that our scheme has a higher compression ratio and higher computing efficiency than the Haar wavelets method and the JPEG method.

Item Type:	Article
Uncontrolled Keywords:	Crop monitoring; Wireless sensor networks; Collaborative image coding; Error bounds; Haar transform
Author Affiliation:	a Department of Mathematics, South China Agricultural University, Guangzhou 510642, China b College of Informatics, South China Agricultural University, Guangzhou 510642, China
Subjects:	Agricultural Engineering Crop Improvement
Divisions:	General
Depositing User:	Mr. SanatKumar Behera
Date Deposited:	02 Sep 2012 06:52
Last Modified:	02 Sep 2012 06:53
Official URL:	http://dx.doi.org/10.1016/j.compag.2012.07.012
URI:	http://eprints.icrisat.ac.in/id/eprint/7652

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