Title:
ディジタル画像信号の階層符号化および復号装置
Document Type and Number:
Japanese Patent JP3590996
Kind Code:
B2
Abstract:
In a hierarchical encoding apparatus, predictors each including a look-up table are used to form predicted signals for respective hierarchical levels. The difference between the predicted signal and the original signal forms the differential signal for the higher hierarchical levels. The look-up table contains either predictive coefficients which are used as weights for pixels of a signal in one hierarchical level to produce a signal at a higher hierarchical level, or representative values which are combined with a dynamic range and redundant component in a set of pixels of a signal in one hierarchical level to produce a signal at a higher hierarchical level. The values in the look-up table are obtained from representative images.
Inventors:
Yasuhiro Fujimori
Tetsujiro Kondo
Nishikata Takeharu
Tetsujiro Kondo
Nishikata Takeharu
Application Number:
JP17597194A
Publication Date:
November 17, 2004
Filing Date:
July 05, 1994
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04N19/105; G06T9/00; H03M7/36; H04N1/41; H04N19/132; H04N19/136; H04N19/137; H04N19/14; H04N19/182; H04N19/31; H04N19/33; H04N19/423; H04N19/50; H04N19/59; H04N19/80; H04N19/90; H04N19/94; H04N19/98; (IPC1-7): H04N7/32; G06T9/00; H03M7/36; H04N1/41
Domestic Patent References:
| JP63306789A | ||||
| JP63048088A | ||||
| JP5328185A |
Attorney, Agent or Firm:
Masatomo Sugiura