| US 7,515,635 B2 | ||
| Moving picture coding method and a moving picture decoding method | ||
| Makoto Hagai, Moriguchi (Japan); Shinya Kadono, Nishinomiya (Japan); Satoshi Kondo, Yawata (Japan); and Kiyofumi Abe, Kadoma (Japan) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Appl. No. 10/480,932 PCT Filed Apr. 16, 2003, PCT No. PCT/JP03/04806 § 371(c)(1), (2), (4) Date Dec. 16, 2003, PCT Pub. No. WO03/090474, PCT Pub. Date Oct. 30, 2003. |
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| Claims priority of application No. 2002-118484 (JP), filed on Apr. 19, 2002. | ||
| Prior Publication US 2004/0146105 A1, Jul. 29, 2004 | ||
| Int. Cl. H04N 7/12 (2006.01); H04N 11/02 (2006.01); H04N 11/04 (2006.01); H04B 1/66 (2006.01) | ||
| U.S. Cl. 375—240.12 | 2 Claims |
| 1. A picture coding method for dividing, into blocks, a current picture to be coded, selecting a reference picture from among
reference pictures on a block basis, describing information which identifies the selected reference picture, and performing
predictive coding on the block, said method comprising:
selecting, using a selection unit, for coding a plural-block image unit made up of a plurality of blocks, a common reference
picture to be commonly referred to, from among plural reference pictures, the common reference picture being only one reference
picture that is selected from among the plural reference pictures and is assigned commonly to each of the plurality of blocks
of the plural-block image unit;
describing, using a common information description unit, common information which identifies the selected common reference
picture, in a common information area for the plural-block image unit such that reference picture identification information
for the selected common reference picture can be omitted for at least one of the plurality of blocks of the plural-block image
unit, instead of describing, per block, reference picture identification information which identifies the selected common
reference picture;
generating, using a predictive image generation unit, a predictive image of a current block to be coded included in the plural-block
image unit, using the selected common reference picture; and
coding, using a coding unit, the current block using the predictive image.
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