Inter-plane reuse of coding parameters

A method for decoding, comprising:

• extracting, from a data stream, first information individually encoded for a first coding block located in a first array of information samples that represents a first color component of a picture, wherein the first information is indicative of whether a coding parameter including a first intra coding parameter of the first coding block containing information related to the first color component is determined using one or more parameters including;
• a second intra coding parameter associated with a second coding block in a second array of information samples that represents a second color component, different from the first color component, of the picture, the second coding block containing information related to the second color component of the picture;
• if the first information indicates that a coding parameter of the first coding block is determined using the one or more parameters associated with the second coding block, obtaining the one or more parameters including the second intra coding parameter associated with the second coding block in the second array of information samples that represents the second color component, and obtaining at least one coding parameter for the first coding block containing information related to the first color component of the picture by copying the second intra coding parameter as the first intra coding parameter such that the first and second intra coding parameters are equal, wherein a spatial resolution of the second array is twice a spatial resolution of the first array, the first intra coding parameter indicates a directionality of intra prediction within the first array in an intra prediction mode and the second intra coding parameter indicates a directionality of intra prediction within the second array in the intra prediction mode;
• if the first information does not indicate that a coding parameter of the first coding block is determined using the one or more parameters associated with the second coding block, obtaining at least one coding parameter specifically encoded into the data stream for the first coding block containing information related to the first color component of the picture, wherein the at least one coding parameter is independent of the one or more parameters associated with the second coding block;
• and
• reconstructing the first coding block based on the at least one coding parameter.

A non-transitory machine readable digital storage medium having computer instructions stored thereon for decoding, wherein the computer instructions, when read by the machine, causing the machine to at least perform:

• extracting, from a data stream, first information individually encoded for a first coding block located in a first array of information samples that represents a first color component of a picture, wherein the first information is indicative of whether a coding parameter including a first intra coding parameter of the first coding block containing information related to the first color component is determined using one or more parameters including a second intra coding parameter associated with a second coding block in a second array of information samples that represents a second color component, different from the first color component, of the picture, the second coding block containing information related to the second color component of the picture;
• if the first information indicates that a coding parameter of the first coding block is determined using the one or more parameters associated with the second coding block, obtaining the one or more parameters including the second intra coding parameter associated with the second coding block in the second array of information samples that represents the second color component, and obtaining at least one coding parameter for the first coding block containing information related to the first color component of the picture by copying the second intra coding parameter as the first intra coding parameter such that the first and second intra coding parameters are equal, wherein a spatial resolution of the second array is twice a spatial resolution of the first array, the first intra coding parameter indicates a directionality of intra prediction within the first array in an intra prediction mode and the second intra coding parameter indicates a directionality of intra prediction within the second array in the intra prediction mode;
• if the first information does not indicate that a coding parameter of the first coding block is determined using the one or more parameters associated with the second coding block, obtaining at least one coding parameter specifically encoded into the data stream for the first coding block containing information related to the first color component of the picture, wherein the at least one coding parameter is independent of the one or more parameters associated with the second coding block;
• and
• reconstructing the first coding block based on the at least one coding parameter.

An encoder configured for coding, into a data stream, first information individually encoded for a first coding block located in a first array of information samples that represents a first color component of a picture, wherein the first information is indicative of whether a coding parameter including a first intra coding parameter of the first coding block containing information related to the first color component is determined using one or more parameters including a second intra coding parameter associated with a second coding block in a second array of information samples that represents a second color component, different from the first color component, of the picture, the second coding block containing information related to the second color component of the picture,

• wherein the encoder is further configured for:
• coding, into the data stream, the one or more parameters associated with the second coding block in the second array of information samples so that if the first information indicates that that a coding parameter of the first coding block is determined using the one or more parameters associated with the second coding block, the second intra coding parameter associated with the second coding block is copied as the first intra coding parameter such that the first and second intra coding parameters are equal to reconstruct the first coding block, wherein a spatial resolution of the second array is twice a spatial resolution of the first array, the first intra coding parameter indicates a directionality of intra prediction within the first array in an intra prediction mode and the second intra coding parameter indicates a directionality of intra prediction within the second array in the intra prediction mode;
• and
• coding, into the data stream, at least one coding parameter of the first coding block containing information related to the first color component of the picture, if the first information does not indicate that that a coding parameter of the first coding block is determined using the one or more parameters associated with the second coding block, such that the at least one coding parameter is independent of the one or more parameters associated with the second coding block.

A method for encoding, comprising:

• coding, into a data stream, first information individually encoded for a first coding block located in a first array of information samples that represents a first color component of a picture, wherein the first information is indicative of whether a coding parameter including a first intra coding parameter of the first coding block containing information related to the first color component is determined using one or more parameters including a second intra coding parameter associated with a second coding block in a second array of information samples that represents a second color component, different from the first color component, of the picture, the second coding block containing information related to the second color component of the picture;
• coding, into the data stream, the one or more parameters associated with the second coding block in the second array of information samples so that if the first information indicates that that a coding parameter of the first coding block is determined using the one or more parameters associated with the second coding block, the second intra coding parameter associated with the second coding block is copied as the first intra coding parameter such that the first and second intra coding parameters are equal to reconstruct the first coding block, wherein a spatial resolution of the second array is twice a spatial resolution of the first array, the first intra coding parameter indicates a directionality of intra prediction within the first array in an intra prediction mode and the second intra coding parameter indicates a directionality of intra prediction within the second array in the intra prediction mode;
• and
• coding, into the data stream, at least one coding parameter of the first coding block containing information related to the first color component of the picture, if the first information does not indicate that a coding parameter of the first coding block is determined using the one or more parameters associated with the second coding block, such that the at least one coding parameter is independent of the one or more parameters associated with the second coding block.

A data stream stored in a non-transitory storage medium, the data stream comprising encoded first information individually encoded for a first coding block located in a first array of information samples that represents a first color component of a picture, wherein the first information is indicative of whether a coding parameter including a first intra coding parameter of the first coding block containing information related to the first color component is determined using one or more parameters including a second intra coding parameter associated with a second coding block in a second array of information samples that represents a second color component, different from the first color component, of the picture, the second coding block containing information related to the second color component of the picture,

• wherein the data stream further comprises the one or more parameters including the second intra coding parameter associated with the second coding block in the second array of information samples so that if the first information indicates that a coding parameter of the first coding block is determined using the one or more parameters associated with the second coding block, the second intra coding parameter is copied as the first intra coding parameter such that the first and second intra coding parameters are equal to reconstruct the first coding block, wherein a spatial resolution of the second array is twice a spatial resolution of the first array, the first intra coding parameter indicates a directionality of intra prediction within the first array in an intra prediction mode and the second intra coding parameter indicates a directionality of intra prediction within the second array in the intra prediction mode, and
• at least one coding parameter of the first coding block containing information related to the first color component of the picture, if the first information does not indicate that a coding parameter of the first coding block is determined using the one or more parameters associated with the second coding block, such that the at least one coding parameter is independent of the one or more parameters associated with the second coding block.