Title:
データ圧縮のための改良された最適化技術
Document Type and Number:
Japanese Patent JP4662697
Kind Code:
B2
Abstract:
Methods and apparatuses are provided relating to the encoding of data, such as, e.g., images, video, etc. For example, certain methods include processing at least a portion of data using a plurality of different quantization functions to produce a plurality of corresponding quantized portions of data, and selectively outputting one of the quantized portions of data based on at least one threshold value. The method may also include dividing initial data into a plurality of portions and classifying the portion of data based on at least one classification characteristic. Here, for example, there may be a threshold value that is associated with the classification characteristic. Additional syntax may be adopted to enable considerably higher compression efficiency by allowing several alternative motion prediction cases. A high efficiency time stamp independent Direct Mode is also provided which considers spatial motion vector prediction as well with stationary temporal predictors.
Inventors:
Alexandros tourapis
Recipe
Wu Feng
Gary Sullivan
Recipe
Wu Feng
Gary Sullivan
Application Number:
JP2003181889A
Publication Date:
March 30, 2011
Filing Date:
June 25, 2003
Export Citation:
Assignee:
MICROSOFT CORPORATION
International Classes:
G06T9/00; H04N7/26; H03M7/30; H04N1/41; H04N7/30; H04N7/50
Domestic Patent References:
| JP2001025014A | ||||
| JP2000307672A |
Other References:
Tourapis,A.M. et al,Motion Vector Prediction in Bidirectionally Predictive (B) frames with regards to Direct Mode ,Joint Video Team (JVT) of ISO/IEC MPEG & ITU-T VCEG (ISO/IEC JTC1/SC29/WG11 and ITU-T SG16 Q.6) JVT-C127,2002年 5月 6日,URL,http://wftp3.itu.int/av-arch/jvt-site/2002_05_Fairfax/JVT-C127.doc
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe