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一种小波域分形图像编码算法的研究

A Study on Fractal Image Coding Algorithm in Wavelet Domain
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摘要 针对经典分形压缩算法中编码时间过长的问题,研究了小波变换在分形图像编码中的应用.根据图像经小波变换后能量主要集中在低频系数图像上,并且和同方向高频小波子带之间具有相似性的特点,而分形编码正是利用图像的自相似性,提出了一种小波域分形图像编码算法,仿真结果表明,该算法在保证重构图像质量的前提下,大幅度减少了编码时间,提高了压缩比. In view of long coding time of classical fractal image compression algorithm, the paper studied the wavelet transformation in the fractal image coding application. According to the energy of the image mainly concentrates in thelow frequency coefficient after the wavelet transformation and between the same direction, high frequency wavelet coefficient has similar characteristic, but the fractal coding essence uses precisely the image' s similarity. A Fractal Coding Algorithm in Wavelet Domain is proposed. The simulation experiment indicated that the algorithm in guaranteed the quality of the reconstructed image. Under the premise, this method can reduce the coding time and enhance compression ratio of the reconstructed image to some extent.
作者 路敬 王冬梅
出处 《佳木斯大学学报(自然科学版)》 CAS 2007年第5期601-603,636,共4页 Journal of Jiamusi University:Natural Science Edition
基金 黑龙江省教育厅科学技术研究项目(11521014)
关键词 小波变换 分形编码 图像编码 wavelet transform fractal coding image coding
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  • 1陈守吉 张立明.分形和图像压缩[M].上海科技教育出版社,1992..
  • 2陈守吉 张立明.分形与图像压缩[M].上海:上海科技教育出版社,1998.59-78.
  • 3J M Shapiro.Embedded Image Coding Using Zerotree of Wavelet Coefficients[J].IEEE Trans On Signal Processing,1993 ;41 (12):3445 -3462.
  • 4S Mallat.A Theory for Multiresolution Signal Decomposition:The Wavelet Representation[J].IEEE Trans On PAMI,1989;11 (7):674 -693.
  • 5MF Barnsley and A Shoal.A Better Way of Communicate[J].Image Byet,1988; 13 (1):215-233.
  • 6Vrscay E R,Mendivil F.Generalized Fractal-Wavelet Transforms for Image Representation and Compression[J].IEEE Canadian Conference on Electrical and Computer Engineering,1997 ;2 (2):490-495.
  • 7Davis G M.A Wavelet-based Analysis of Fractal Image Compression[J].IEEE Trans On Image Processing,1998 ;7(2):141-154.
  • 8Zhang Y, Po L M. Speeding up fractal image encoding by wavelet-based block classificatio [J]. Electronics Letters.,1996,32(23):2140-2141.
  • 9Roberto Rinaldo, Giancarlo Calvagno. Image Coding by Block Prediction of Multiresolution Subimages [J]. IEEE Trans. onImage Processing, 1995,4(7) :141-154.
  • 10Shapiro J. Embedded image coding using zerotrees of wavelet coefficients [J]. IEEE Trans. on Signal Processing, 1992,41 (12):3445-3462.

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