SPIHT coding algorithm based on mixed Contourlet and wavelet transform

doi:10.3778/j.issn.1002-8331.2009.27.051

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (27): 168-170.DOI: 10.3778/j.issn.1002-8331.2009.27.051

• 图形、图像、模式识别 • Previous Articles Next Articles

SPIHT coding algorithm based on mixed Contourlet and wavelet transform

LV Jia-kai，FENG Yan，LV Wei

School of Electronics and Information，Northwestern Polytechnical University，Xi’an 710072，China

Received:2008-05-22 Revised:2008-08-05 Online:2009-09-21 Published:2009-09-21
Contact: LV Jia-kai

Contourlet和小波相结合的SPIHT算法

吕嘉凯，冯燕，吕维

西北工业大学电子信息学院，西安 710072

通讯作者: 吕嘉凯

Abstract

Abstract: A Mixed Contourlet and Wavelet Transform（MCWT） is employed according to Contourlet Transform and Wavelet based Contourlet Transform（WBCT）.Due to particularity of the MCWT coefficients，a new spatial orientation tree is proposed to perform the Set Partitioning In Hierarchical Trees coding algorithm.Experimental results demonstrate that the proposed algorithm perform high Peak Signal to Noise Ratio（PSNR） at low bit rate，and it can keep more contours and textures in the reconstructed images.

Key words: Contourlet transform, Wavelet Transform, image coding, Set Partitioning In Hierarchical Trees（SPIHT）, Wavelet based Contourlet Transform（WBCT）

摘要： 借鉴Contourlet变换和WBCT的思想，采用Contourlet和小波相结合的变换，并根据变换后系数的特殊结构，提出了一种新的空间方向树结构，实现了对变换后系数的类似SPIHT编码，达到了对图像压缩的目的。实验表明，该算法能更好地恢复图像的纹理和细节信息，并在低比特率下具有较高的峰值信噪比。

关键词: Contourlet变换, 小波变换, 图像编码, 多级树集合分裂编码算法, 基于小波的Contourlet变换

CLC Number:

TN911.73

LV Jia-kai，FENG Yan，LV Wei. SPIHT coding algorithm based on mixed Contourlet and wavelet transform[J]. Computer Engineering and Applications, 2009, 45(27): 168-170.

吕嘉凯，冯燕，吕维. Contourlet和小波相结合的SPIHT算法[J]. 计算机工程与应用, 2009, 45(27): 168-170.

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SPIHT coding algorithm based on mixed Contourlet and wavelet transform

Contourlet和小波相结合的SPIHT算法

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