Patent ID: 11889030
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A method implemented by an encoder, the method comprising:
encoding a slice into a bitstream as a coded slice as part of an encoded video sequence;
determining adaptive loop filter (ALF) parameters associated with the coded slice;
encoding the ALF parameters into the bitstream in a first adaptation parameter set (APS) network abstraction layer (NAL) unit including an ALF type; and
storing the bitstream for communication toward a decoder,
wherein the bitstream further comprises a third APS NAL unit including a luma mapping with chroma scaling (LMCS) type including LMCS parameters for application to the coded slice,
wherein the bitstream comprises an ALF APS assigned to the first APS NAL unit and a LMCS APS assigned to the third APS NAL unit, wherein each APS includes an APS identifier (ID) from a predefined range determined based on a parameter type of each APS, wherein the APS is a syntax structure used to signal information for slices, wherein the LMCS parameters are used for a LMCS which is a process that scale chroma values based on luma mappings, and wherein the ALF parameters are used for an ALF which is a filter controlled by parameters included in the ALF APS, and
wherein the APSs of a particular type share a same value space for the APS IDs, and different types of the APSs use different value spaces of the APS ID.