Picture coding method, picture decoding method, picture...

Details Picture coding method, picture decoding method, picture... Picture coding method, picture decoding method, picture...

2011-03-22

2011-03-22

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C382S232000

Reexamination Certificate

active

07912122

ABSTRACT:
The picture coding method according to the present invention is a picture coding method for coding a picture on a block-by-block basis through orthogonal transformation and quantization, and coding a quantization matrix that is used to derive quantization steps for frequencies of orthogonal transformation coefficients, the method comprising: calculating a difference value between each of frequency components included in the quantization matrix and a predetermined value corresponding to said each of the frequency components; and coding the difference value into a variable length code, wherein a code length of the variable length code is shorter as the difference value is smaller, or equal to a code length of a neighboring difference value of said difference value.

REFERENCES:
patent: 5034965 (1991-07-01), Kato
patent: 5241383 (1993-08-01), Chen et al.
patent: 5392037 (1995-02-01), Kato
patent: 5500677 (1996-03-01), Fert
patent: 5515105 (1996-05-01), Lim
patent: 5742342 (1998-04-01), Jung
patent: 6445739 (2002-09-01), Shen et al.
patent: 6577681 (2003-06-01), Kimura
patent: 6928113 (2005-08-01), Mihara
patent: 6963606 (2005-11-01), Yanagihara et al.
patent: 7082163 (2006-07-01), Uenoyama et al.
patent: 2002/0085636 (2002-07-01), Uenoyama et al.
patent: 2002/0114388 (2002-08-01), Ueda et al.
patent: 2004/0234150 (2004-11-01), Chang
patent: 2009/0010334 (2009-01-01), Ueda et al.
patent: 1088041 (1994-06-01), None
patent: 1158058 (1997-08-01), None
patent: 1243636 (2000-02-01), None
patent: 1354605 (2002-06-01), None
patent: 0 777 387 (1997-06-01), None
patent: 02-216917 (1990-08-01), None
patent: 04-343576 (1992-11-01), None
patent: 02-235778 (1993-09-01), None
patent: 10-276097 (1998-10-01), None
patent: 11-088880 (1999-03-01), None
patent: 2001-258029 (2001-09-01), None
patent: 2001-359107 (2001-12-01), None
patent: 98/35503 (1998-08-01), None
ITU-T Recommendation H.262, International Standard ISO/IEC 13818.2 MPEG-2 Video. Transmission of Non-Telephone Signals. Information Technology—Generic Coding of Moving Pictures and Associated Audio Information: Video. ITU-T Telecommunication Standarization Sector of ITU, Geneva, Switzerland, Jul. 1, 1995, pp. 54-55, 68.
“General Image Compression Coding Principle of MPEG-2”; Sep. 1997; pp. 13-15; © China Academic Journal Electronic Publishing House 1994-2006; with English translation.
Yun Q. Shi, Huifant Sun: “Image and Video Compression for Multimedia Engineering” CRC Press, 2000, pp. 55-60.

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