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    EFFICIENT MULTI-VIEW CODING USING DEPTH-MAP ESTIMATE FOR A DEPENDENT VIEW
    92.
    发明申请
    EFFICIENT MULTI-VIEW CODING USING DEPTH-MAP ESTIMATE FOR A DEPENDENT VIEW 审中-公开

    公开(公告)号：US20200275072A1

    公开(公告)日：2020-08-27

    申请号：US16871919

    申请日：2020-05-11

    Applicant: GE Video Compression, LLC

    Inventor： Heiko SCHWARZ ,  Thomas WIEGAND

    IPC: H04N13/128 ,  H04N13/161 ,  H04N19/194 ,  H04N19/513 ,  H04N19/597 ,  H04N19/46 ,  H04N19/52 ,  H04N19/895

    Abstract: The usual coding order according to which the reference view is coded prior to the dependent view, and within each view, a depth map is coded subsequent to the respective picture, may be maintained and does lead to a sacrifice of efficiency in performing inter-view redundancy removal by, for example, predicting motion data of the current picture of the dependent view from motion data of the current picture of the reference view. Rather, a depth map estimate of the current picture of the dependent view is obtained by warping the depth map of the current picture of the reference view into the dependent view, thereby enabling various methods of inter-view redundancy reduction more efficiently by bridging the gap between the views. According to another aspect, the following discovery is exploited: the overhead associated with an enlarged list of motion predictor candidates for a block of a picture of a dependent view is comparatively low compared to a gain in motion vector prediction quality resulting from an adding of a motion vector candidate which is determined from an, in disparity-compensated sense, co-located block of a reference view.

    MULTI-VIEW CODING WITH EFFICIENT RESIDUAL HANDLING
    93.
    发明申请
    MULTI-VIEW CODING WITH EFFICIENT RESIDUAL HANDLING 审中-公开

    公开(公告)号：US20200244941A1

    公开(公告)日：2020-07-30

    申请号：US16848297

    申请日：2020-04-14

    Applicant: GE VIDEO COMPRESSION, LLC

    Inventor： Heiko SCHWARZ ,  Thomas WIEGAND ,  Martin WINKEN

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

    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.

    ENTROPY ENCODING AND DECODING SCHEME
    94.
    发明申请
    ENTROPY ENCODING AND DECODING SCHEME 审中-公开

    公开(公告)号：US20200228135A1

    公开(公告)日：2020-07-16

    申请号：US16836191

    申请日：2020-03-31

    Applicant: GE VIDEO COMPRESSION, LLC

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

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

    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.

    MULTI-VIEW CODING WITH EXPLOITATION OF RENDERABLE PORTIONS
    97.
    发明申请
    MULTI-VIEW CODING WITH EXPLOITATION OF RENDERABLE PORTIONS 审中-公开

    公开(公告)号：US20190208221A1

    公开(公告)日：2019-07-04

    申请号：US16291146

    申请日：2019-03-04

    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.

    ENTROPY ENCODING AND DECODING SCHEME
    99.
    发明申请
    ENTROPY ENCODING AND DECODING SCHEME 审中-公开

    公开(公告)号：US20190013822A1

    公开(公告)日：2019-01-10

    申请号：US16109953

    申请日：2018-08-23

    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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