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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 tow bit rate coded images. In this paper the Double Shift DCI ( DSDCT ) image coding scheme is to be presented. The pixels in spatial and coefficients domain has been shifted according to the equalpitch principle before DCI 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 DSDCT results in smaller image reconstruction errors better signal to noise ratio and more data compression than the adaptive DCT image coding scheme from Chen1 h

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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