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Proceedings Paper

HDTV down-conversion using a drift reduction scheme
Author(s): Dennis Jia Yu Chan; Sheng Mei Shen; Takafumi Ueno
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Paper Abstract

In the near future of the digital television (DTV) broadcasting, we assume that a standard definition television (SDTV) decoder should have the function of receiving a high definition television (HDTV) signal so that user with SDTV display can receiver HDTV program and display it on its monitor. In order to do so, it is required to convert a HDTV bitstream down to a SDTV signal. In this paper, we propose a fast and memory efficient scheme for the down-conversion. The proposed scheme uses adaptive scalar to truncate the HDTV motion vector for performing half-pel motion compensation (MC) in low-resolution so that the loss in motion vector accuracy will not be accumulated. It saves a lot of computations and requires a smaller memory by performing MC after the down-conversion. The simulation results show that the proposed scheme provides acceptable visual quality while maintaining reasonable complexity.

Paper Details

Date Published: 30 May 2000
PDF: 5 pages
Proc. SPIE 4067, Visual Communications and Image Processing 2000, (30 May 2000); doi: 10.1117/12.386591
Show Author Affiliations
Dennis Jia Yu Chan, Panasonic Singapore Labs. Pte Ltd. (Singapore)
Sheng Mei Shen, Panasonic Singapore Labs. Pte Ltd. (Singapore)
Takafumi Ueno, Matsushita Electric Industrial Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 4067:
Visual Communications and Image Processing 2000
King N. Ngan; Thomas Sikora; Ming-Ting Sun, Editor(s)

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