Title: Transmission of modified JPEG images through AWGN channel

Authors: A. Vasuki, P.T. Vanathi

Addresses: Department of ECE, Kumaraguru College of Technology, Coimbatore 641006, India. ' Department of ECE, PSG College of Technology, Coimbatore 641004, India

Abstract: Joint Photographic Experts Group (JPEG) is a standard for compressing continuous-tone images. In this paper, image is compressed based on JPEG, but in place of Huffman coding, Run Length Encoding (RLE)/Vector Quantisation (VQ) has been applied and performance evaluated. RLE does not require table storage, but produces lesser compression than Huffman. VQ achieves higher compression at the cost of reduced quality. Further, the reconstructed image has been filtered to reduce blocking artifacts. When the encoded image is corrupted with Additive White Gaussian Noise (AWGN), VQ is more robust than Huffman/RLE since it is fixed-length encoding technique.

Keywords: image compression; transmission; modified JPEG; AWGN; additive white Gaussian noise; Huffman; RLE; run length encoding; VQ; vector quantisation.

DOI: 10.1504/IJSISE.2008.026794

International Journal of Signal and Imaging Systems Engineering, 2008 Vol.1 No.3/4, pp.231 - 237

Published online: 26 Jun 2009 *

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