HDTV down-conversion using a drift reduction scheme

Dennis Jia Yu Chan; Sheng Mei Shen; Takafumi Ueno

doi:10.1117/12.386591

30 May 2000 HDTV down-conversion using a drift reduction scheme

Dennis Jia Yu Chan; Sheng Mei Shen; Takafumi Ueno

Author Affiliations +

Proceedings Volume 4067, Visual Communications and Image Processing 2000; (2000) https://doi.org/10.1117/12.386591
Event: Visual Communications and Image Processing 2000, 2000, Perth, Australia

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.

Citation Download Citation

Dennis Jia Yu Chan, Dennis Jia Yu Chan, Sheng Mei Shen, Sheng Mei Shen, Takafumi Ueno, Takafumi Ueno, } "HDTV down-conversion using a drift reduction scheme", Proc. SPIE 4067, Visual Communications and Image Processing 2000, (30 May 2000); doi: 10.1117/12.386591; https://doi.org/10.1117/12.386591

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