Reference picture signaling
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsJonatan Samuelsson, Rickard Sjöberg
Life of this patent
Estimating the term…
Abstract
An encoded representation of a picture of a video stream is decoded by retrieving buffer description from the encoded representation. The buffer description information is used to determine at least one picture identifier identifying a respective reference picture as decoding reference for the picture. A decoded picture buffer is updated based on the determined picture identifier. The encoded representation of the picture itself comprises the information needed by a decoder to identify the reference pictures required to decode the encoded representation.
Claims18
A method of decoding a picture in a video stream of multiple pictures, said method comprising:
- decoding buffer description information defining at least one reference picture from an encoded representation of the picture;
- determining, based on the buffer description information, at least one delta identifier that corresponds to a difference between a reference picture identifier and a picture identifier identifying the picture;
- determining, based on the at least one delta identifier, a reference picture identifier identifying said reference picture;
- and
- comparing the at least one reference picture identifier determined from the buffer description information with reference picture identifiers associated with reference pictures stored in a decoded picture buffer.
A decoder configured to decode an encoded representation of a picture in a video stream of multiple pictures, the decoder comprising:
- at least one processor;
- and
- a memory storing instructions which, when executed by the at least one processor causes the decoder to perform operations comprising:
- decoding buffer description information defining at least one reference picture from an encoded representation of the picture;
- determining, based on the buffer description information, at least one delta identifier that corresponds to a difference between a reference picture identifier and a picture identifier identifying said picture;
- determining, based on the at least one delta identifier, at least one reference picture identifier identifying said reference picture;
- and
- comparing the at least one reference picture identifier determined from the buffer description information with reference picture identifiers associated with reference pictures stored in a decoded picture buffer.
Dependencies are inferred from the claim text.