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Proceedings Paper

Prefilter approach for the design of the lapped orthogonal transform basis
Author(s): ChangWoo Lee; Sang Uk Lee
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Paper Abstract

In this paper, we propose a new method to design the LOT basis with the view of maximizing the transform coding gain. In our approach, only the linear phase basis is considered, since the nonlinear phase basis is inappropriate to the image coding. The proposed design technique for the LOT basis is mainly based on decomposing the transform matrix into an orthogonal matrix and the prefilter matrix. Based on the decomposition, the prefilter matrix and the orthogonal matrix are designed separately. It is shown that the proposed LOT yields the improved coding gain as compared to the conventional LOT.

Paper Details

Date Published: 22 October 1993
PDF: 11 pages
Proc. SPIE 2094, Visual Communications and Image Processing '93, (22 October 1993); doi: 10.1117/12.157885
Show Author Affiliations
ChangWoo Lee, Seoul National Univ. (South Korea)
Sang Uk Lee, Seoul National Univ. (South Korea)


Published in SPIE Proceedings Vol. 2094:
Visual Communications and Image Processing '93
Barry G. Haskell; Hsueh-Ming Hang, Editor(s)

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