中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

284 records (took 0.073 seconds)

    Quality scalable coding with mapping different ranges of bit depths
    82.
    发明授权
    Quality scalable coding with mapping different ranges of bit depths 有权

    公开(公告)号：US10659776B2

    公开(公告)日：2020-05-19

    申请号：US16190409

    申请日：2018-11-14

    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.

    Multi-view coding with efficient residual handling
    83.
    发明授权
    Multi-view coding with efficient residual handling 有权

    公开(公告)号：US10659754B2

    公开(公告)日：2020-05-19

    申请号：US14277850

    申请日：2014-05-15

    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.

    Entropy encoding and decoding scheme
    85.
    发明授权
    Entropy encoding and decoding scheme 有权

    公开(公告)号：US10581454B2

    公开(公告)日：2020-03-03

    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 ,  H03M7/46 ,  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.

    Entropy encoding and decoding scheme
    90.
    发明授权
    Entropy encoding and decoding scheme 有权

    公开(公告)号：US10419017B2

    公开(公告)日：2019-09-17

    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 ,  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.

Patent Agency Ranking