Title:
ビデオ復号化における参照ピクチャの適応重み付け
Document Type and Number:
Japanese Patent JP4822467
Kind Code:
B2
Abstract:
A video decoder (300), encoder (500), and corresponding methods for processing video signal data for an image block and a particular reference picture index to predict the image block are disclosed that utilize adaptive weighting of reference pictures to enhance video compression, where a decoder (300) includes a reference picture weighting factor unit (380) for determining a weighting factor corresponding to the particular reference picture index; an encoder (500) includes a reference picture weighting factor assignor (572) for assigning a weighting factor corresponding to the particular reference picture index; and a method for decoding includes receiving a reference picture index with the data that corresponds to the image block, determining a weighting factor for each received reference picture index, retrieving a reference picture for each index, motion compensating the retrieved reference picture, and multiplying the motion compensated reference picture by the corresponding weighting factor to form a weighted motion compensated reference picture.
Inventors:
Voice, jill, mcdonalds
Application Number:
JP2010055800A
Publication Date:
November 24, 2011
Filing Date:
March 12, 2010
Export Citation:
Assignee:
Thomson Licensing
International Classes:
G06T9/00; H03M7/36; H04N1/00; H04N7/12; H04N19/50
Domestic Patent References:
| JP2004007377A |
Attorney, Agent or Firm:
Riki Kikoshi
Takashi Ishii
Kuramochi Makoto
Suita Reiko
Takashi Ishii
Kuramochi Makoto
Suita Reiko