Title:
領域情報で符号化する方法
Document Type and Number:
Japanese Patent JP4295828
Kind Code:
B2
Abstract:
The process for the compression of digital data from a video image which carries out a partitioning (4) of the image into image blocks, a Discrete Cosine Transformation (9) of these blocks so as to deliver coefficients and a quantization (10) of each coefficient using a quantization interval, is characterized in that it also carries out a segmentation (2) of the image and a labelling (2) of the regions obtained, and in that it associates with each block a block control interval on the basis of which the quantization interval for each coefficient of the block is defined, the value of which is calculated as a function of these labels.
Inventors:
Guillotel, Philip
Application Number:
JP52435898A
Publication Date:
July 15, 2009
Filing Date:
November 24, 1997
Export Citation:
Assignee:
THOMSON MULTIMEDIA
International Classes:
H04N7/30; G06T9/00; H04N7/26; H04N7/50
Domestic Patent References:
| JP7222145A | ||||
| JP7203458A | ||||
| JP8265769A | ||||
| JP7050830A | ||||
| JP3124181A | ||||
| JP4219089A | ||||
| JP6070311A |
Attorney, Agent or Firm:
Tadahiko Ito