Title:
REVERSIBLE COMPRESSION CODER AND REVERSIBLE EXPANSION DECODER FOR MOVING IMAGE
Document Type and Number:
Japanese Patent JP3902698
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To increase a recording time of an image recorder and to reduce a data transfer rate in the image transmission.
SOLUTION: The reversible compression coder for a moving image is provided with a plurality of Markov models and conditional probability distribution tables (1), (2), (3) used respectively for the models. Entropy coding is applied to a plurality of representative point pixels decided in advance in a frame by using the Markov models and at least one conditional probability table corresponding to them, a conditional probability distribution table used corresponding to the Markov model where bit total numbers (5-1), (5-2), (5-3) as the coding result are minimized (6) is selected (SW1) adaptively in the unit of frames, and all pixels in a frame image which can be subject to entropy coding are entropy-coded.
Inventors:
Ogawa alone
Takashi Kato
Uehara Toshihiro
Okuda Haruo
Takashi Kato
Uehara Toshihiro
Okuda Haruo
Application Number:
JP33008297A
Publication Date:
April 11, 2007
Filing Date:
December 01, 1997
Export Citation:
Assignee:
Japan Broadcasting Corporation
International Classes:
H04N19/11; H03M7/36; H04N7/24; H04N19/00; H04N19/13; H04N19/134; H04N19/136; H04N19/142; H04N19/15; H04N19/172; H04N19/196; H04N19/423; H04N19/46; H04N19/593; H04N19/61; H04N19/625; H04N19/70; H04N19/87; H04N19/90; H04N19/91; (IPC1-7): H04N7/24; H03M7/36
Domestic Patent References:
| JP59002485A | ||||
| JP4291826A | ||||
| JP4035468A | ||||
| JP4006954A | ||||
| JP7154606A | ||||
| JP2177684A | ||||
| JP5207441A |
Attorney, Agent or Firm:
Kosaku Sugimura
Hiroshi Tokunaga
Umemoto Masao
Juno Aoki
Shiro Fujitani
Hiroshi Tokunaga
Umemoto Masao
Juno Aoki
Shiro Fujitani
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