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    MULTI-VIEW CODING WITH EXPLOITATION OF RENDERABLE PORTIONS
    1.
    发明公开
    MULTI-VIEW CODING WITH EXPLOITATION OF RENDERABLE PORTIONS 审中-公开

    公开(公告)号：US20230328271A1

    公开(公告)日：2023-10-12

    申请号：US18207473

    申请日：2023-06-08

    Applicant: GE VIDEO COMPRESSION, LLC

    Inventor： Sebastian BOSSE ,  Heiko SCHWARZ ,  Thomas WIEGAND ,  Heribert BRUST

    IPC: H04N19/52 ,  H04N19/597

    CPC classification number: H04N19/52 ,  H04N19/597

    Abstract: Rendered portions of a renderable portion of a first view of a multi-view signal are introduced into a prediction loop of a multi-view encoder to form a reference signal for the block-based prediction of the encoder's view predictor may improve the prediction and thereby increasing the coding efficiency. The introduction may be performed by completely inserting the renderable portion into the prediction loop to form new reference pictures with their own reference picture indices in addition to reference pictures obtained by the reconstructed version of the multi-view signal of the block-based prediction. Alternatively, the rendered portion may be introduced into the prediction loop completely, but with replacing the normal prediction reference signal, i.e., the normally reconstructed signal as obtained by block-based prediction. Alternatively, it may be signaled within the data stream which portions of the renderable portion are used to replace respective portions in the normally reconstructed signal.

    MULTI-VIEW CODING WITH EFFICIENT RESIDUAL HANDLING
    2.
    发明申请
    MULTI-VIEW CODING WITH EFFICIENT RESIDUAL HANDLING 有权

    公开(公告)号：US20220159228A1

    公开(公告)日：2022-05-19

    申请号：US17531478

    申请日：2021-11-19

    Applicant: GE Video Compression, LLC

    Inventor： Heiko SCHWARZ ,  Thomas WIEGAND ,  Martin WINKEN

    IPC: H04N13/128 ,  H04N13/161 ,  H04N19/597 ,  H04N19/463

    Abstract: A gain in multi-view coding is achieved as follows: the residual signal involved with coding a dependent view of the multi-view signal is predicted from a reference residual signal of the current picture of the reference view using block-granular disparity-compensated prediction, i.e. using disparity compensated prediction with a disparity defined at, and varying with, block granularity so that each block of the current picture of the dependent view has its own disparity displacement such as its own disparity vector, associated therewith. In other words, a remaining similarity between the residual signal involved with predictively coding the reference view is used in order to predict the residual signal involved with predictively coding the dependent view.

    MULTI-VIEW CODING WITH EXPLOITATION OF RENDERABLE PORTIONS
    4.
    发明申请
    MULTI-VIEW CODING WITH EXPLOITATION OF RENDERABLE PORTIONS 有权

    公开(公告)号：US20210112269A1

    公开(公告)日：2021-04-15

    申请号：US17129457

    申请日：2020-12-21

    Applicant: GE Video Compression, LLC

    Inventor： Sebastian BOSSE ,  Heiko SCHWARZ ,  Thomas WIEGAND ,  Heribert BRUST

    IPC: H04N19/52 ,  H04N19/597

    Abstract: Rendered portions of a renderable portion of a first view of a multi-view signal are introduced into a prediction loop of a multi-view encoder to form a reference signal for the block-based prediction of the encoder's view predictor may improve the prediction and thereby increasing the coding efficiency. The introduction may be performed by completely inserting the renderable portion into the prediction loop to form new reference pictures with their own reference picture indices in addition to reference pictures obtained by the reconstructed version of the multi-view signal of the block-based prediction. Alternatively, the rendered portion may be introduced into the prediction loop completely, but with replacing the normal prediction reference signal, i.e., the normally reconstructed signal as obtained by block-based prediction. Alternatively, it may be signaled within the data stream which portions of the renderable portion are used to replace respective portions in the normally reconstructed signal.

    QUALITY SCALABLE CODING WITH MAPPING DIFFERENT RANGES OF BIT DEPTHS
    5.
    发明申请
    QUALITY SCALABLE CODING WITH MAPPING DIFFERENT RANGES OF BIT DEPTHS 审中-公开

    公开(公告)号：US20200351491A1

    公开(公告)日：2020-11-05

    申请号：US16849271

    申请日：2020-04-15

    Applicant: GE VIDEO COMPRESSION, LLC

    Inventor： Detlev MARPE ,  Martin WINKEN ,  Heiko SCHWARZ ,  Thomas WIEGAND

    IPC: H04N19/102 ,  H04N19/50 ,  H04N19/30 ,  H04N19/61 ,  H04N19/117 ,  H04N19/186 ,  H04N19/184 ,  H04N19/187 ,  H04N19/36

    Abstract: A more efficient way of addressing different bit-depths, or different bit-depths and chroma sampling format requirements is achieved by using a low bit-depth and/or low-chroma resolution representation for providing a respective base layer data stream representing this low bit-depth and/or low-chroma resolution representation as well as for providing a higher bit-depth and/or higher chroma resolution representation so that a respective prediction residual may be encoded in order to obtain a higher bit-depth and/or higher chroma resolution representation. By this measure, an encoder is enabled to store a base-quality representation of a picture or a video sequence, which can be decoded by any legacy decoder or video decoder, together with an enhancement signal for higher bit-depth and/or reduced chroma sub-sampling, which may be ignored by legacy decoders or video decoders.

    PICTURE CODING SUPPORTING BLOCK MERGING AND SKIP MODE
    6.
    发明申请
    PICTURE CODING SUPPORTING BLOCK MERGING AND SKIP MODE 审中-公开

    公开(公告)号：US20200186826A1

    公开(公告)日：2020-06-11

    申请号：US16790892

    申请日：2020-02-14

    Applicant: GE Video Compression LLC

    Inventor： Heiko SCHWARZ ,  Heiner KIRCHHOFFER ,  Philipp HELLE ,  Simon OUDIN ,  Jan STEGEMANN ,  Benjamin BROSS ,  Detlev MARPE ,  Thomas WIEGAND

    IPC: H04N19/52 ,  H04N19/184 ,  H04N19/176 ,  H04N19/172 ,  H04N19/70 ,  H04N19/50

    Abstract: A coding efficiency increase is achieved by using a common signalization within the bitstream with regard to activation of merging and activation of the skip mode. One possible state of one or more syntax elements within the bitstream may signalize for a current sample set of a picture that the sample set is to be merged and has no prediction residual encoded and inserted into the bitstream. A common flag may signalize whether the coding parameters associated with a current sample set are to be set according to a merge candidate or to be retrieved from the bitstream, and whether the current sample set of the picture is to be reconstructed based on a prediction signal depending on the coding parameters associated with the current sample set, without any residual data, or to be reconstructed by refining the prediction signal depending on the coding parameters associated with the current sample set by means of residual data within the bitstream.

    ENTROPY ENCODING AND DECODING SCHEME
    8.
    发明申请
    ENTROPY ENCODING AND DECODING SCHEME 审中-公开

    公开(公告)号：US20190305795A1

    公开(公告)日：2019-10-03

    申请号：US16446228

    申请日：2019-06-19

    Applicant: GE VIDEO COMPRESSION, LLC

    Inventor： Detlev MARPE ,  Tung NGUYEN ,  Heiko SCHWARZ ,  Thomas WIEGAND

    IPC: H03M7/00 ,  H03M7/40 ,  H03M7/46

    Abstract: Decomposing a value range of the respective syntax elements into a sequence of n partitions with coding the components of z laying within the respective partitions separately with at least one by VLC coding and with at least one by PIPE or entropy coding is used to greatly increase the compression efficiency at a moderate coding overhead since the coding scheme used may be better adapted to the syntax element statistics. Accordingly, syntax elements are decomposed into a respective number n of source symbols si with i=1 . . . n, the respective number n of source symbols depending on as to which of a sequence of n partitions into which a value range of the respective syntax elements is sub-divided, a value z of the respective syntax elements falls into, so that a sum of values of the respective number of source symbols si yields z, and, if n>1, for all i=1 . . . n−1, the value of si corresponds to a range of the ith partition.

    PICTURE CODING SUPPORTING BLOCK MERGING AND SKIP MODE
    9.
    发明申请
    PICTURE CODING SUPPORTING BLOCK MERGING AND SKIP MODE 审中-公开

    公开(公告)号：US20190246136A1

    公开(公告)日：2019-08-08

    申请号：US16386403

    申请日：2019-04-17

    Applicant: GE Video Compression LLC

    Inventor： Heiko SCHWARZ ,  Heiner KIRCHHOFFER ,  Philipp HELLE ,  Simon OUDIN ,  Jan STEGEMANN ,  Benjamin BROSS ,  Detlev MARPE ,  Thomas WIEGAND

    IPC: H04N19/52 ,  H04N19/184 ,  H04N19/176 ,  H04N19/50 ,  H04N19/70 ,  H04N19/172

    Abstract: A coding efficiency increase is achieved by using a common signalization within the bitstream with regard to activation of merging and activation of the skip mode. One possible state of one or more syntax elements within the bitstream may signalize for a current sample set of a picture that the sample set is to be merged and has no prediction residual encoded and inserted into the bitstream. A common flag may signalize whether the coding parameters associated with a current sample set are to be set according to a merge candidate or to be retrieved from the bitstream, and whether the current sample set of the picture is to be reconstructed based on a prediction signal depending on the coding parameters associated with the current sample set, without any residual data, or to be reconstructed by refining the prediction signal depending on the coding parameters associated with the current sample set by means of residual data within the bitstream.

    ENTROPY ENCODING AND DECODING SCHEME
    10.
    发明申请
    ENTROPY ENCODING AND DECODING SCHEME 审中-公开

    公开(公告)号：US20190097649A1

    公开(公告)日：2019-03-28

    申请号：US16198338

    申请日：2018-11-21

    Applicant: GE VIDEO COMPRESSION, LLC

    Inventor： Detlev MARPE ,  Tung NGUYEN ,  Heiko SCHWARZ ,  Thomas WIEGAND

    IPC: H03M7/00

    CPC classification number: H03M7/00 ,  H03M7/40 ,  H03M7/4006 ,  H03M7/46

    Abstract: Decomposing a value range of the respective syntax elements into a sequence of n partitions with coding the components of z laying within the respective partitions separately with at least one by VLC coding and with at least one by PIPE or entropy coding is used to greatly increase the compression efficiency at a moderate coding overhead since the coding scheme used may be better adapted to the syntax element statistics. Accordingly, syntax elements are decomposed into a respective number n of source symbols si with i=1 . . . n, the respective number n of source symbols depending on as to which of a sequence of n partitions into which a value range of the respective syntax elements is sub-divided, a value z of the respective syntax elements falls into, so that a sum of values of the respective number of source symbols si yields z, and, if n>1, for all i=1 . . . n−1, the value of si corresponds to a range of the ith partition.

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