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Proceedings Paper

Block effect reduction for the two-layer video codec based on MPEG-2
Author(s): Taehwan Shin; Tae-Sun Choi
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Paper Abstract

In this paper, we describe the two-layer video codec based on MPEG-2 and its layering algorithms, where we exploit the property that the human vidual system is more sensitive to low frequency coefficients than high frequency coefficients in the DCT domain. We prose a new bloc effect reduction algorithm, called content-based AC correction, which predicts AC coefficients considering the image content itself in the DCT domain; because the block effect occurs in a block which has few AC coefficients in DCT domain. First, this algorithm detects which block has a block effect. Secondly, this algorithm detects if a block is located near the edge or a boundary of video object. If the block is located near any edge or boundary, a new AC correction algorithm is used. Otherwise, the traditional AC correction algorithm is used.

Paper Details

Date Published: 9 January 1998
PDF: 8 pages
Proc. SPIE 3309, Visual Communications and Image Processing '98, (9 January 1998); doi: 10.1117/12.298332
Show Author Affiliations
Taehwan Shin, Kwangju Institute of Science and Technology (South Korea)
Tae-Sun Choi, Kwangju Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 3309:
Visual Communications and Image Processing '98
Sarah A. Rajala; Majid Rabbani, Editor(s)

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