Title:
IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING PROGRAM, AND IMAGE DECODING PROGRAM
Document Type and Number:
WIPO Patent Application WO/2004/039083
Kind Code:
A1
Abstract:
In a variable length encoding unit (16), CBP is input as an input symbol (H1) to a variable length code output unit (30). Moreover, CBP in the surrounding block is input as encoding map table reference information (H2) from an encoding symbol memory (31) to a encoding map table providing unit (32). According to the CBP in the surrounding block, an encoding map table to be used for encoding the CBP is decided in the encoding map table providing unit (32) and the encoding map table (H4) is provided to the variable length code output unit (30). Moreover, a variable length encoding table (H5) is input from a variable length encoding table providing unit (33) to the variable length code output unit (30). The CBP as an object to be encoded is encoded with a variable length and output as encoded data (D9). Thus, it is possible to effectively perform information source encoding of an encoding symbol according to the encoding condition and the image quality.
Inventors:
SUGIMOTO KAZUO (JP)
ADACHI SATORU (JP)
KATO SADAATSU (JP)
ETOH MINORU (JP)
KOBAYASHI MITSURU (JP)
YAMAGUCHI HIROYUKI (JP)
ADACHI SATORU (JP)
KATO SADAATSU (JP)
ETOH MINORU (JP)
KOBAYASHI MITSURU (JP)
YAMAGUCHI HIROYUKI (JP)
Application Number:
PCT/JP2003/005388
Publication Date:
May 06, 2004
Filing Date:
April 25, 2003
Export Citation:
Assignee:
NTT DOCOMO INC (JP)
SUGIMOTO KAZUO (JP)
ADACHI SATORU (JP)
KATO SADAATSU (JP)
ETOH MINORU (JP)
KOBAYASHI MITSURU (JP)
YAMAGUCHI HIROYUKI (JP)
SUGIMOTO KAZUO (JP)
ADACHI SATORU (JP)
KATO SADAATSU (JP)
ETOH MINORU (JP)
KOBAYASHI MITSURU (JP)
YAMAGUCHI HIROYUKI (JP)
International Classes:
G06T9/00; H04N19/132; H04N19/119; H04N19/134; H04N19/136; H04N19/137; H04N19/139; H04N19/14; H04N19/172; H04N19/176; H04N19/186; H04N19/196; H04N19/46; H04N19/463; H04N19/50; H04N19/503; H04N19/51; H04N19/60; H04N19/61; H04N19/625; H04N19/70; H04N19/91; H04N19/93; (IPC1-7): H04N7/50
Foreign References:
| JPH10191324A | 1998-07-21 | |||
| JP2001320715A | 2001-11-16 | |||
| JPH08214310A | 1996-08-20 | |||
| JPH10327411A | 1998-12-08 | |||
| JPH01179584A | 1989-07-17 | |||
| JPH1169358A | 1999-03-09 |
Other References:
See also references of EP 1478190A4
None
None
Attorney, Agent or Firm:
Hasegawa, Yoshiki (Ginza First Bldg. 10-6, Ginza 1-chom, Chuo-ku Tokyo, JP)
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