We Claim:
1. An image decoding device comprising:
an intra prediction unit for carrying out an intra-frame prediction process on a block which is a unit for a prediction process to generate an intra prediction image, when a coding mode for said block is an intra coding mode,
wherein said intra prediction unit generates said intra prediction image of said block by calculating a predicted value from reference samples according to an intra prediction parameter indicating a type of intra prediction, and performs a filtering process for said intra prediction image on at least one of pixels in the intra prediction image according to a type of color component and a size of said block.
2. An image decoding method comprising:
an intra prediction processing step of carrying out an intra-frame prediction process on a block which is a unit for a prediction process to generate an intra prediction image, when a coding mode for said block is an intra coding mode,
wherein said intra prediction processing step includes generating said intra prediction image of said block by calculating a predicted value from reference samples according to an intra prediction parameter indicating a type of intra prediction, and performing a filtering process for said intra prediction image of said block on at least one of pixels in said intra prediction image according to a type of color component and a block size of said block.
3. An image encoding device comprising:
an intra prediction unit for carrying out an intra-frame prediction process on a block which is a unit for a prediction process to generate an intra prediction image, when a coding mode for said block is an intra coding mode,
wherein said intra prediction unit generates said intra prediction image of said block by calculating a predicted value from reference samples according to an intra prediction parameter indicating a type of intra prediction, and performs a filtering process for said intra prediction image of said block on at least one of pixels in said intra prediction image according to a type of color component and a size of said block.

4. An image encoding method comprising:
an intra prediction processing step of carrying out an intra-frame prediction process on a block which is a unit for a prediction process to generate an intra prediction image, when a coding mode for said block is an intra coding mode,
wherein said intra prediction processing step includes generating said intra prediction image of said block by calculating a predicted value from reference samples according to an intra prediction parameter indicating a type of intra prediction, and performing a filtering process for said intra prediction image of said block on at least one of pixels in said intra prediction image according to a type of color component and a block size of said block.
5. An image decoding device comprising:
an intra prediction unit for carrying out an intra-frame prediction process on a block which is a unit for a prediction process to generate an intra prediction image, when a coding mode for said block is an intra coding mode,
wherein said intra prediction unit generates said intra prediction image of said block by calculating a predicted value from reference samples according to an intra prediction parameter indicating a type of intra prediction, and performs a filtering process for said intra prediction image of said block on at least one of pixels in said intra prediction image according to a type of color component and said intra prediction parameter.
6. An image decoding method comprising:
an intra prediction processing step of carrying out an intra-frame prediction process on a block which is a unit for a prediction process to generate an intra prediction image, when a coding mode for said block is an intra coding mode,
wherein said intra prediction processing step includes generating said intra prediction image of said block by calculating a predicted value from reference samples according to an intra prediction parameter indicating a type of intra prediction, and performing a filtering process for said intra prediction image of said block on at least one of pixels in said intra prediction image according to a type of color component and said intra prediction parameter.

7. An image encoding device comprising:
an intra prediction unit for carrying out an intra-frame prediction process on a block which is a unit for a prediction process to generate an intra prediction image, when a coding mode for said block is an intra coding mode,
wherein said intra prediction unit generates said intra prediction image of said block by calculating a predicted value from reference samples according to an intra prediction parameter indicating a type of intra prediction, and performs a filtering process for said intra prediction image of said block on at least one of pixels in said intra prediction image according to a type of color component and said intra prediction parameter.
8. An image encoding method comprising:
an intra prediction processing step of carrying out an intra-frame prediction process on a block which is a unit for a prediction process to generate an intra prediction image, when a coding mode for said block is an intra coding mode,
wherein said intra prediction processing step includes generating said intra prediction image of said block by calculating a predicted value from reference samples according to an intra prediction parameter indicating a type of intra prediction, and performing a filtering process for said intra prediction image of said block on at least one of pixels in said intra prediction image according to a type of color component and said intra prediction parameter.