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7/5双正交小波的构造及图像编码应用 被引量：2

Construction of 7/5 biorthogonal wavelet and its application to image coding
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摘要 根据双正交小波精确重构条件,推导出了7/5双正交小波滤波器组的参数化表达式.该表达式参数可随意取值,因此能够任意构造具有不同特征的7/5线性相位小波滤波器.作为构造实例,构造了具有最佳编码增益的有理系数7/5小波滤波器.实验表明,它具有与CDF 9/7小波滤波器相似的图像压缩性能,而且其提升小波变换的计算效率可提高20%. The parametric expressions of 7/5 biorthogonal wavelet filter bank （FB） family were derived based on the perfect reconstruction condition of such wavelet. By assigning various arbitrary real numbers to the parameter in its expression, any 7/5 FB with different features can be constructed with ease; all of them have the linear phase. As an illustration, a rational-coefficient 7/5 FB with optimal coding gain was constructed. Extensive simulations showed that it has compact performance similar to that of the popular 9/7 FB by Cohen, Daubechies, and Feauveau for image coding, and the corresponding lifting of discrete wavelet transform （DWT） gains an improvement upon computational efficiency up to 20 % over the latter.
作者 高成秀 刘在德 王智平
机构地区 兰州工业高等专科学校机械工程系 西安交通大学电子与信息工程学院 兰州理工大学材料科学与工程学院
出处 《兰州理工大学学报》 CAS 北大核心 2006年第2期89-92,共4页 Journal of Lanzhou University of Technology
基金 国家自然科学基金(60021302)
关键词 双正交小波 滤波器 最佳编码增益 离散小波变换 提升 图像编码 biorthogonal wavelet filter bank optimal coding gain discrete wavelet transform lifting image coding
分类号 TN911.73 [电子电信—通信与信息系统]
  • 相关文献

参考文献7

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二级参考文献12

  • 1[1]Cohen A, Daubechies I, Feauveau J C. Biorthogonal bases of compactly supported wavelets [J]. Commun Pure Appl Math, 1992, 45: 485～560.
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共引文献13

同被引文献15

  • 1吴乐南.声波勘探信号的预测编码[J].石油地球物理勘探,1995,30(4):505-508. 被引量：5
  • 2丁爱玲,石光明,张宁,焦李成.波形匹配小波设计及其在信号数据压缩中的应用[J].电子与信息学报,2007,29(4):804-807. 被引量：6
  • 3ISO/IEC 15444-1. Information teehnology--JPEG 2000 image coding system: core coding system [S/OL]. (2008-03-10). http://www. ptsn. net. cn/standard/std_query/show-iso-15472- 1. htm.
  • 4LIU Zaide, ZHENG Nanning. Parametrization construction of biorthogonal wavelet filter banks for image coding [J]. Signal, Image and Video Processing, 2007,1 (1) : 63-76.
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  • 10SWELDENS W. The lifting scheme: a custom-design of biorthogonal wavelets [J]. Applied Computational and Harmonic Analysis, 1996,3(2): 186-200.

引证文献2

二级引证文献4

兰州理工大学学报
2006年 第2期

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