Patent ID: 11956440
Assignee: SUN PATENT TRUST
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. An image decoding apparatus for decoding pictures, the image decoding apparatus comprising:
a processor; and
a memory storing thereon a computer program, which when executed by the processor, causes the processor to perform operations including:
obtaining, from a sequence parameter set corresponding to a coded bitstream,
buffer descriptions, each of the buffer descriptions specifying reference pictures to be held in a buffer for decoding pictures;
obtaining, from the sequence parameter set, reference list descriptions, which correspond one-to-one with the buffer descriptions, each of the reference list descriptions indicating a correspondence relationship between one of the reference pictures that is specified by a corresponding one of the buffer descriptions and an index for identifying the one of the reference pictures;
obtaining, from a header of one of slices in one of the pictures, buffer description selecting information indicating one of the buffer descriptions;
obtaining, from the one of the slices, the index for identifying the one of the reference pictures; and

specifying one of the reference pictures held in the buffer using (i) the reference list description which corresponds to the buffer description indicated by the buffer description selecting information and (ii) the index for identifying the one of the reference pictures.