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小波零树与霍夫曼相结合的图像编码 被引量:2

Image coding combining zerotree wavele with Huffman
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摘要 在总结以前有关嵌入式小波零树(EZW)图像压缩编码算法的基础上,提出了一种基于半自适应霍夫曼的增强型嵌入式小波零树图像编码算法(HAEZW)。该算法扩充了空间方向树的表示符号,然后根据各符号出现的概率,按位平面采用半自适应霍夫曼编码。实践证明,这种基于半自适应霍夫曼的增强型EZW算法对提高图像数据的压缩比是十分有效的。 On the basis of summarizing formerly representative algorithms on the embedded zerotree wavelet(EZW)image compression coding,a half-adaptive-Huffman based on augmented EZW(HAEZW) image coding algorithm was proposed. Firstly, this algorithm augments expressed symbols of spatial orientation tree. Then,according to occurring probability of different symbol adopted half-adaptive-Huffman coding based on bit-plane. Practice verifies that the HAEZW algorithm is very effective on enhancing compression rate of image data.
出处 《计算机应用》 CSCD 北大核心 2004年第11期110-112,共3页 journal of Computer Applications
关键词 EZW HAEZW 小波变换 嵌入式编码 渐进量化 EZW HAEZW wavelet transform embedded coding successive-approximation quantization
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  • 1[1]SHAPIRO JM.Embedded image coding using zerotrees of wavelet coefficients[ J].IEEE Transactions on Signal Processing,1993,41(12):3445-3462. 被引量:1
  • 2[2]LIANG J.Highly Scalable Image Coding for Multimedia Applications [A].Proceeding of the Fifth ACM Intl.Multimedia Conference[ C].1997.11-19. 被引量:1
  • 3[3]MUZAFFAR T,CHOI TS.Simplified EZW image coder with residual data transmission[A].IEEE International Conference on Multimedia and Expro(I) [C].2000.111-114. 被引量:1
  • 4[4]SAID A,PEARLMAN WA.A new fast and efficient image codec based on set partitioning in hierarchical tree[ J].IEEE Transactions on Circuits and systems for Video Technology,1996,6(6). 被引量:1
  • 5[5]RAJPOOT N,WILSON R.Progressive image coding using augmented zerotrees of wavelet coefficients[ R].Research Report CS-RR 350,Department of Computer Science,University of Warwick (UK),September 1998. 被引量:1
  • 6[6]BARRETO CS,MENDONCA GV.Enhanced Zerotree Wavelet Transform Image Coding Exploiting Smilarities Inside Subbands[ A].Proceeding IEEE Conference On Image Proceeding[ C].1996. 被引量:1
  • 7[7]ANTONINI M,BARLAUD M,MATHIEU P,et al.Image coding using wavelet transform[ A].IEEE Transaction Image Processing[ C].1992.1:205-220. 被引量:1
  • 8[8](美)SALOMON D.数据压缩原理与应用(第二版)[M].吴乐南,等译.北京:电子工业出版社,2003.55-59. 被引量:1

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