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    Apparatus, a Method and a Computer Program for Video Coding and Decoding.
    1.
    发明公开
    Apparatus, a Method and a Computer Program for Video Coding and Decoding. 审中-公开

    公开(公告)号：US20230319286A1

    公开(公告)日：2023-10-05

    申请号：US18131432

    申请日：2023-04-06

    Applicant: Nokia Technologies Oy

    Inventor： Miska HANNUKSELA ,  Alireza AMINLOU

    IPC: H04N19/137 ,  H04N19/30 ,  H04N19/176

    CPC classification number: H04N19/137 ,  H04N19/176 ,  H04N19/30

    Abstract: A method comprising: encoding an input picture into a coded picture; reconstructing picture corresponding to the coded picture; encoding a spatial region into a coded tile, the encoding comprising: determining a horizontal offset and a vertical offset indicative of a region-wise anchor position of the spatial region within the decoded picture; encoding the horizontal offset and the vertical offset; determining that a prediction unit at position of a first horizontal coordinate and a first vertical coordinate is predicted relative to the region-wise anchor position; indicating that the prediction unit is predicted relative to a prediction-unit anchor position; deriving a prediction-unit anchor position equal to sum of the first horizontal coordinate and the horizontal offset, and the first vertical coordinate and the vertical offset, respectively; and determining a motion vector for the prediction unit; and applying the motion vector relative to the prediction-unit anchor position to obtain a prediction block.

    Method, An Apparatus and A Computer Program Product for Video Encoding and Video Decoding
    2.
    发明申请
    Method, An Apparatus and A Computer Program Product for Video Encoding and Video Decoding 有权

    公开(公告)号：US20230062691A1

    公开(公告)日：2023-03-02

    申请号：US17789883

    申请日：2020-12-30

    Applicant: Nokia Technologies Oy

    Inventor： Kashyap Kammachi SREEDHAR ,  Miska HANNUKSELA ,  Sujeet MATE ,  Emre AKSU

    IPC: H04N21/84 ,  H04N21/854

    Abstract: The embodiments relate to a method, including writing a first and a second media entity in a container file; creating a media presentation description (MPD) with a first and a second Representation; the Representations belonging to Adaptation Sets; the Representations being associated with the media entities of the container file; when one of the Representations belongs to a media entity which is a thumbnail to a viewpoint or a thumbnail to an overlay, the method includes writing in the MPD file an association/correspondence/grouping information of the said one Representation with another Representation belonging to a media entity which is a viewpoint or an overlay, correspondingly. The embodiments also relate to a method for parsing, and technical equipment for implementing the methods.

    AN APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING
    4.
    发明申请
    AN APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING 有权

    公开(公告)号：US20220141455A1

    公开(公告)日：2022-05-05

    申请号：US17430893

    申请日：2020-01-29

    Applicant: Nokia Technologies Oy

    Inventor： Francesco CRICRI ,  Caglar AYTEKIN ,  Miska HANNUKSELA ,  Xingyang NI

    IPC: H04N19/11 ,  H04N19/85 ,  H04N19/159 ,  H04N19/176 ,  G06N3/08 ,  G06N3/04

    Abstract: A method comprising: obtaining a configuration of at least one neural network comprising a plurality of intra-prediction mode agnostic layers and one or more intra-prediction mode specific layers, the one or more intra-prediction mode specific layers corresponding to different intra-prediction modes; obtaining at least one input video frame comprising a plurality of blocks; determining to encode one or more blocks using intra prediction; determining an intra-prediction mode for each of said one or more blocks; grouping blocks having same intra-prediction mode into groups, each group being assigned with a computation path among the plurality of intra-prediction mode agnostic and the one or more intra-prediction mode specific layers; training the plurality of intra-prediction mode agnostic and/or the one or more intra-prediction mode specific layers of the neural networks based on a training loss between an output of the neural networks relating to a group of blocks and ground-truth blocks, wherein the ground-truth blocks are either blocks of the input video frame or reconstructed blocks; and encoding a block using a computation path assigned to an intra-prediction mode for the block.

    AN APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING
    5.
    发明申请
    AN APPARATUS, A METHOD AND A COMPUTER PROGRAM FOR VIDEO CODING AND DECODING 有权

    公开(公告)号：US20220078486A1

    公开(公告)日：2022-03-10

    申请号：US17419080

    申请日：2019-12-30

    Applicant: Nokia Technologies Oy

    Inventor： Miska HANNUKSELA

    IPC: H04N19/597 ,  H04N19/119 ,  H04N19/167 ,  H04N19/169 ,  H04N19/177 ,  H04N19/70 ,  H04N19/593 ,  H04N19/46 ,  H04N19/85

    Abstract: A method comprising: encoding at least four bitstream versions of a same content divided into segments of independently coded tile sets representing a plurality of spatial regions, wherein a first and a second bitstream comprise independently coded tile sets encoded at a first quality, and a third and a fourth bitstream comprise independently coded tile sets encoded at a second quality, wherein the first and the third bitstream have first random access picture interval and the second and the fourth bitstream have second random access picture interval, which is an integer multiple of the first random access picture interval; grouping the independently coded tile sets of all four bitstreams representing a common spatial region into a plurality of groups of collocated sub-picture tracks, wherein only one of said tile sets per group is intended to be received and/or decoded per any segment; and generating at least one instruction for merging tile sets of different spatial locations into at least one coded picture, the at least one instruction causing a tile set originating from a random access picture to be decoded as a tile set originating from anon-random-access picture when merged with a tile set originating from a non-random-access picture.

    Luma Mapping with Chroma Scaling for Gradual Decoding Refresh
    9.
    发明公开
    Luma Mapping with Chroma Scaling for Gradual Decoding Refresh 审中-公开

    公开(公告)号：US20230164338A1

    公开(公告)日：2023-05-25

    申请号：US17916925

    申请日：2021-03-25

    Applicant: Nokia Technologies OY

    Inventor： Limin WANG ,  Seungwook HONG ,  Krit PANUSOPONE ,  Miska HANNUKSELA

    IPC: H04N19/44 ,  H04N19/46 ,  H04N19/186 ,  H04N19/172

    CPC classification number: H04N19/44 ,  H04N19/46 ,  H04N19/172 ,  H04N19/186

    Abstract: A method, apparatus, and computer program product provide for management of luma mapping with chroma scaling (LMCS) processes for Gradual Decoding Refresh (GDR) pictures. In the context of a method, the method accesses a picture to be decoded and determines whether the picture is within a GDR period. The method can also prevent a LMCS decoding process from being applied to the picture within the GDR period. Another method can determine whether a virtual boundary is within a current coding tree unit of a picture with a GDR period and if so, prevent a chroma residual scaling decoding process associated with LMCS from being applied to one or more coding units within a clean area. Another method can pad a neighboring pixel area from one or more reconstructed pixels in a clean area for a chroma residual scaling decoding process associated with LMCS.

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