Title:
ビデオデータを処理して圧縮を行う方法
Document Type and Number:
Japanese Patent JP5044285
Kind Code:
B2
Abstract:
Data elements, preferably representative of video data, are logically divided into blocks. In a bit-wise fashion, each block is inspected to determine whether the data elements for that block may be represented in a highly compact format. If a given block may not be represented in this manner, it is sub-divided into blocks having smaller dimensions. This process of identifying suitable blocks and sub-dividing is recursively repeated until minimum block dimensions are reached. The same result may be achieved through the use of a plurality of ascending tables that are constructed by repetitively forming tables of reduced data elements. The plurality of ascending tables is traversed and, based on the reduced data elements, blocks of data are identified that are susceptible to the highly compact format. Wavelet transforms are preferably used to provide video data to be compressed.
Inventors:
Clark, Derek Land
Roberts, Teddy Paul
Shafer, Lucinda Ellen
Stocker, Kenneth Alan
Roberts, Teddy Paul
Shafer, Lucinda Ellen
Stocker, Kenneth Alan
Application Number:
JP2007135859A
Publication Date:
October 10, 2012
Filing Date:
May 22, 2007
Export Citation:
Assignee:
Memlung Digital Limited LLC
International Classes:
H04N7/30; G06T9/00; H04N11/04; H03M7/30; H04N1/41; H04N7/26
Domestic Patent References:
| JP11191153A |
Foreign References:
| WO1998052148A1 |
Other References:
Shapiro, J.M,A fast technique for identifying zerotrees in the EZW algorithm,Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings,米国,IEEE,1996年 5月10日,Vol.3,p.1455-1458
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito