Method, apparatus and storage medium for image encoding/decoding using reference picture
AssigneeElectronics and Telecommunications Research Institute
InventorsGun Bang, Woong Lim
Life of this patent
Estimating the term…
Abstract
Disclosed herein are a method, apparatus and storage medium for image encoding/decoding using a reference picture. A picture is divided into multiple sub-pictures. The sub-pictures of the picture share a reference picture list. In order to determine sub-pictures that share the reference picture list, specific information is signaled from an encoding apparatus to a decoding apparatus. For each sub-picture that does not share a reference picture list for an additional sub-picture, a reference picture list for the sub-picture is separately configured.
Claims17
A decoding method, comprising:
- determining a reference picture list for a target sub-picture of a target picture;
- and
- performing decoding on the target sub-picture using the reference picture list for the target sub-picture,
- wherein whether a common reference picture list is shared for all sub-pictures including the target sub-picture in the target picture is determined,
- the common reference picture list is configured and used as the reference picture list for the target sub-picture in a case that it is determined that the common reference picture list is shared for all sub-pictures including the target sub-picture in the target picture, and
- a scale value is derived in a configuration for the reference picture list for the target sub-picture in a case that a first scale of the target sub-picture and a second scale of a reference picture of the target sub-picture are different from each other.
An encoding method, comprising:
- determining a reference picture list for a target sub-picture of a target picture;
- and
- generating encoded information about a target block by performing encoding on the target sub-picture that uses the reference picture list for the target sub-picture,
- wherein whether a common reference picture list is shared for all sub-pictures including the target sub-picture in the target picture is determined,
- the common reference picture list is configured and used as the reference picture list for the target sub-picture in a case that it is determined that the common reference picture list is shared for all sub-pictures including the target sub-picture in the target picture, and
- a scale value is derived in a configuration for the reference picture list for the target sub-picture in a case that a first scale of the target sub-picture and a second scale of a reference picture of the target sub-picture are different from each other.
A non-transitory computer-readable storage medium storing non-transitory information comprising a bitstream, the bitstream including encoded information about a target sub-picture of a target picture, wherein:
- information about the target sub-picture is generated by performing decoding on encoded information about the target sub-picture,
- decoding is performed on the target sub-picture using the information about the target sub-picture,
- a reference picture list for the target sub-picture is determined,
- decoding is performed on the target sub-picture that uses the reference picture list for the target sub-picture, and
- whether a common reference picture list is shared for all sub-pictures including the target sub-picture in the target picture is determined,
- the common reference picture list is configured and used as the reference picture list for the target sub-picture in a case that it is determined that the common reference picture list is shared for all sub-pictures including the target sub-picture in the target picture, and
- a scale value is derived in a configuration for the reference picture list for the target sub-picture in a case that a first scale of the target sub-picture and a second scale of a reference picture of the target sub-picture are different from each other.
Dependencies are inferred from the claim text.