DCT-based image compression using wavelet-based algorithm with efficient deblocking filter

Wen Chien Yen, Shen Chuan Tai

研究成果: Conference contribution

6 引文 斯高帕斯(Scopus)

摘要

Discrete cosine transform (DCT) is widely used in many practical image/video compression systems because of its compression performance and computational efficiency. This work adopts DCT, and modified the SPIHT algorithm that designed initially for encoding the discrete wavelet transform (DWT) coefficients in order to suit to encode DCT coefficients. The algorithm represents the DCT coefficients to concentrate signal energy and proposes combination and dictator to eliminate the correlation in the same level subband for encoding the DCT-based images. The coding complexity of the proposed algorithm for DCT coefficients is just close to JPKG but the performance is higher than JPEG2000, Furthermore, the proposed algorithm append to deblocking function in low bit rate in order to improve the perceptual quality. Experimental results indicate that the proposed technique improves the quality of the reconstructed image in tenus of both PSNR and the perceptual results over JPEG2000 at the same bit rate.

原文English
主出版物標題Proceedings - Fourth Annual ACIS International Conference on Computer and Information Science, ICIS 2005
頁面489-494
頁數6
DOIs
出版狀態Published - 2005 十二月 1
事件4th Annual ACIS International Conference on Computer and Information Science, ICIS 2005 - Jeju Island, Korea, Republic of
持續時間: 2005 七月 142006 七月 16

出版系列

名字Proceedings - Fourth Annual ACIS International Conference on Computer and Information Science, ICIS 2005
2005

Other

Other4th Annual ACIS International Conference on Computer and Information Science, ICIS 2005
國家/地區Korea, Republic of
城市Jeju Island
期間05-07-1406-07-16

All Science Journal Classification (ASJC) codes

  • 工程 (全部)

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