公开(公告)号：US20240291981A1

公开(公告)日：2024-08-29

申请号：US18693380

申请日：2022-08-31

Applicant: Nokia Technologies Oy

Inventor： Alireza ZARE ,  Alireza AMINLOU ,  Miska Matias HANNUKSELA

IPC: H04N19/117 ,  H04N19/119 ,  H04N19/174

CPC classification number: H04N19/117 ,  H04N19/119 ,  H04N19/174

Abstract: A method comprising: dividing pictures of one or more input picture sequences into a plurality of subpictures (1000); encoding each of the subpictures into a plurality of subpicture versions having different quality and/or resolution (1002); partitioning the plurality of subpicture versions into one or more subpicture groups (1004); and allocating a range of adaptive loop filter parameter set identifiers coefficients for each of said subpicture groups (1006).

公开(公告)号：US20230110503A1

公开(公告)日：2023-04-13

申请号：US17759550

申请日：2021-02-04

Applicant: Nokia Technologies Oy

Inventor： Jani LAINEMA ,  Emre Baris AKSU ,  Miska Matias HANNUKSELA ,  Alireza ZARE ,  Francesco CRICRI

IPC: H04N19/42 ,  H04N19/176 ,  H04N19/172 ,  H04N19/463 ,  H04N19/117 ,  G06N20/00

Abstract: The embodiments relate to method for encoding and decoding, wherein the method for encoding comprises receiving an input block of a video frame for encoding; applying at least a learning-based model (702) for said input block as a processing step for encoding the block; combining (703) an output of a learning-based model with one or more data sources (712, 713) by a combination process; encoding block to a bitstream (40); using a result of the combination process as additional input for the learning-based model for encoding a subsequent block; and encoding to a bitstream combination information (720) used in the combination process, said combination information comprising at least one or more combination parameters. The embodiments also relate to technical equipment for implementing the methods.

公开(公告)号：US20230062752A1

公开(公告)日：2023-03-02

申请号：US17760017

申请日：2021-02-12

Applicant: Nokia Technologies Oy

Inventor： Jani LAINEMA ,  Francesco CRICRI ,  Emre Baris AKSU ,  Alireza ZARE ,  Miska Matias HANNUKSELA

IPC: H04N19/149 ,  H04N19/159 ,  H04N19/176 ,  G06N3/04

Abstract: The embodiments relate to a method for encoding and a decoding, and apparatuses for the same. The method for encoding comprises receiving a block of a video frame for encoding (1510); making a decision on whether or not a learning-based model is to be applied as a processing step for encoding the block (1520); applying the learning-based model for said input block according to the decision, where the learning-based model has been selectively fine-tuned according to information relating to activation of the learning-based model of previously-decoded blocks (1530); encoding a signal corresponding to the decision on usage of the learning-based model into a bitstream (1540); and encoding the block into a bitstream with an information whether the block is to be used for finetuning (1550).