Ms. Xuye Wang Profile

Xuye Wang

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Proceedings Article | 16 August 2011 Paper

LDPC-coded transmission system for lossless compressed hyperspectral image over Rayleigh channel

Xuye Wang, Piming Ma, Yanhua Ma

Proceedings Volume 8196, 81961U (2011) https://doi.org/10.1117/12.901033

KEYWORDS: Image compression, Image transmission, Hyperspectral imaging, Computer programming, Signal to noise ratio, Remote sensing, Image restoration, Computer simulations, Modulation, Forward error correction

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In this paper, a useful lossless compression method of hyperspectral remote sensing images is presented, which combines three-dimension adaptive predictor (3-DAP) and JPEG-LS algorithm. By using LDPC codes as the error-correction scheme, a compressed image transmission system with high spectral efficiency is proposed over Rayleigh fading channel. Linear programming (LP) decoding of LDPC codes is widely concerned for its maximum likelihood features and the maximum likelihood (ML) decoding for LDPC codes can be relaxed to an LP optimization problem. Therefore, the paper focus on an efficient algorithm called infeasible primal-dual interior-point (IPDIP) algorithm for solving LP problem with predictor-corrector technique. This technique decreases the amount of infeasible points and keeps them closing to the central path. Simulation results show that the lossless compression algorithm can reconstruct the hyperspectral image completely with higher compression ratio than JPEG-LS's. Moreover, the image transmission system achieves good bit error rate (BER) performance and good global convergence properties with less iteration number and time.

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