高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (4): 534.

• 论文 • 上一篇    下一篇

小波变换方法的比较──红外光谱数据压缩

章文军1, 许禄1, 刘胜雄2   

  1. 1. 中国科学院长春应用化学研究所, 长春 130022;
    2. 吉林大学数学系, 长春 130023
  • 收稿日期:1998-06-25 出版日期:1999-04-24 发布日期:1999-04-24
  • 通讯作者: 许禄
  • 作者简介:章文军,29岁,博士研究生.
  • 基金资助:

    国家自然科学基金(批准号:29677016)资助课题

Comparison of Wavelet Transform Methods The Compression of IR Spectral Data

ZHANG Wen-Jun1, XU Lu1, LIU Sheng-Xiong2   

  1. 1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun, 130022;
    2. Department of Mathematics, Jilin University, Changchun, 130023
  • Received:1998-06-25 Online:1999-04-24 Published:1999-04-24

摘要: 介绍了小波变换和多分辨分析的基本理论以及常用小波变换压缩数据的3种方法:(1)只保留模糊信号;(2)全部保留模糊信号及锐化信号中的较大值;(3)保留模糊信号及锐化信号中的较大值.将紧支集小波和正交三次B-样条小波压缩4-苯乙炔基-邻苯二甲酸酐的红外光谱数据进行了对比,计算表明正交三次B-样条小波变换方法效果较好,而在全部保留模糊信号及只保留锐化信号中数值较大的系数时,压缩比大而重建光谱数据与原始光谱数据间的均方差较小.

关键词: 小波变换, 多分辨分析, 数据压缩, 红外光谱

Abstract: In this paper, an introduction of wavelet transform and multi-resolution analysis is presented. We describe three data compression methods based on wavelet transform for spectra LIN formation, and by using the multiresolution analysis, we compressed spectral data by Daubechiess compactly supported orthogonal wavelet and orthogonal cubic Bsplines wavelet.Using orthogonal cubic Bsplines wavelet and coefficients of sharpening signal are set to zero, only very few large coefficients are stored, and a favourable data compression can be achieved.

Key words: Wavelet transform, Multiresolution analysis, Data compression, IR spectra

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