Adaptive interference hyperspectral image compression with spectrum distortion control  

作　　者：马静 李云松 吴成柯 陈东 

机构地区：[1]State Key Laboratory of Integrated Service Networks,Xidian University

出　　处：《Chinese Optics Letters》2009年第10期934-937,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China under Grant No.60532060

摘　　要：As one of the next generation imaging spectrometers, interferential spectrometer has been paid much attention. With traditional spectrum compression methods, the hyperspectral images generated by interferential spectrometer can only be protected with better visual quality in spatial domain, but its optical applications in Fourier domain are often ignored. So the relation between the distortion in Fourier domain and the compression in spatial domain is analyzed in this letter. Based on this analysis, a novel coding scheme is proposed, which can compress data in spatial domain while reducing the distortion in Fourier domain. The bitstream of set partitioning in hierarchical trees （SPIHT） is truncated by adaptively lifting the rate-distortion slopes of zerotrees according to the priorities of optical path difference （OPD） based on rate-distortion optimization theory. Experimental results show that the proposed scheme can achieve better performance in Fourier domain while maintaining the image quality in spatial domain.As one of the next generation imaging spectrometers, interferential spectrometer has been paid much attention. With traditional spectrum compression methods, the hyperspectral images generated by interferential spectrometer can only be protected with better visual quality in spatial domain, but its optical applications in Fourier domain are often ignored. So the relation between the distortion in Fourier domain and the compression in spatial domain is analyzed in this letter. Based on this analysis, a novel coding scheme is proposed, which can compress data in spatial domain while reducing the distortion in Fourier domain. The bitstream of set partitioning in hierarchical trees （SPIHT） is truncated by adaptively lifting the rate-distortion slopes of zerotrees according to the priorities of optical path difference （OPD） based on rate-distortion optimization theory. Experimental results show that the proposed scheme can achieve better performance in Fourier domain while maintaining the image quality in spatial domain.

关 键 词：Electric distortion Image coding Image compression Image quality Independent component analysis Signal distortion Site selection SPECTROMETERS SPECTROMETRY 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] O433.1[自动化与计算机技术—计算机科学与技术]