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Proceedings Paper

DS-DCT: the double-shift DCT image coding for low-bit-rate image transmission
Author(s): Defu Cai; Yan-Ping Chen
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Paper Abstract

Traditional block transform coding scheme would generate the artifact called blocking effects near block boundaries which degrate the low bit rate coded images. In this paper; the Double Shift DCT ( DS-DCT ) image coding scheme is to be presented. The pixels in spatial and coefficients domain has been shifted according to the equal-pitch principle before DCT transformation. Finally; the blocking effects will be reduced to a very low level. At the mean time; the energy with in subblocks will be more compacted. Therefore; the benefits of more data compression will be accompanied with the reducing blocking effects. The DS-DCT results in smaller image reconstruction errors; better signal to noise ratio and more data compression than the adaptive DCT image coding scheme from Chen1 .

Paper Details

Date Published: 1 September 1990
PDF: 9 pages
Proc. SPIE 1360, Visual Communications and Image Processing '90: Fifth in a Series, (1 September 1990); doi: 10.1117/12.24276
Show Author Affiliations
Defu Cai, Institute of Electronics (China)
Yan-Ping Chen, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 1360:
Visual Communications and Image Processing '90: Fifth in a Series
Murat Kunt, Editor(s)

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