| 摘要 |
An intra prediction mode selecting unit selects an intra prediction mode for a block subject to coding. A most probable mode list construction unit constructs, using intra prediction modes for multiple reference blocks, a list of most probable modes having a certain number of elements for any block subject to coding, irrespective of the number of different intra prediction modes for multiple coded blocks. A most probable mode index calculating unit calculates, when the intra prediction mode for a block subject to coding is probable, information identifying the most probable mode according to the list. A non-probable mode index calculating unit calculates, when the intra prediction mode for a block subject to coding is not probable, information identifying the non-probable mode according to the list. |
