A Study Of Bit-Reduction Method of Overhead Information for MPEG-2 Low Bit Rate Coding
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- Kurozumi Masaaki
- NHK Science and Technical Research Laboratories.
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- Ichigaya Atsuro
- NHK Science and Technical Research Laboratories.
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- Sugimoto Tomohiko
- NHK Science and Technical Research Laboratories.
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- Nakasu Eisuke
- NHK Science and Technical Research Laboratories.
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- Ohtsuka Yoshimichi
- NHK Engineering Services, INC.
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- Tsuchiya Yuzuru
- NHK Engineering Services, INC.
Bibliographic Information
- Other Title
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- オーバーヘッド符号量低減によるMPEG-2低ビットレート符号化の検討(ハイビジョンおよび一般)
- オーバーヘッド符号量低減によるMPEG-2低ビットレート符号化の検討
- オーバーヘッド フゴウリョウ テイゲン ニ ヨル MPEG 2 テイビットレート フゴウカ ノ ケントウ
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Abstract
A higher efficient HDTV coding technique is desired to enrich digital broadcasting services. In the MPEG-2 video coding, which is commonly used for digital broadcasting, a motion vector rate is almost constant and not related to the coding bit rate. Therefore, at a lower bit rate, the motion vector rate is generally high and the quantiser scale becomes large to reduce the DCT coefficient rate. This is the major factor that causes remarkable picture degradation by HDTV low bit rate coding. To improve picture quality at the lower bit rate, the motion vector rate should be suppressed. This paper describes an improvement method of picture quality by selecting the coding mode and the motion vectors so that give the minimum amount of the transmitted bits in a macroblock.
Journal
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- ITE Technical Report
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ITE Technical Report 26.17 (0), 7-12, 2002
The Institute of Image Information and Television Engineers
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Details 詳細情報について
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- CRID
- 1390001204526737152
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- NII Article ID
- 110003671266
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- NII Book ID
- AN1059086X
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- ISSN
- 24241970
- 13426893
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- NDL BIB ID
- 6125482
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed
