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

Wen Chien Yen, Shen Chuan Tai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationProceedings - Fourth Annual ACIS International Conference on Computer and Information Science, ICIS 2005
Pages489-494
Number of pages6
DOIs
Publication statusPublished - 2005 Dec 1
Event4th Annual ACIS International Conference on Computer and Information Science, ICIS 2005 - Jeju Island, Korea, Republic of
Duration: 2005 Jul 142006 Jul 16

Publication series

NameProceedings - Fourth Annual ACIS International Conference on Computer and Information Science, ICIS 2005
Volume2005

Other

Other4th Annual ACIS International Conference on Computer and Information Science, ICIS 2005
CountryKorea, Republic of
CityJeju Island
Period05-07-1406-07-16

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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