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.

公开(公告)号：US10609385B2

公开(公告)日：2020-03-31

申请号：US16197154

申请日：2018-11-20

Applicant: GE Video Compression, LLC

Inventor： Martin Winken ,  Heiner Kirchhoffer ,  Heiko Schwarz ,  Detlev Marpe ,  Thomas Wiegand

IPC: H04N19/159 ,  H04N19/597 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119 ,  H04N19/147 ,  H04N19/46 ,  H04N19/196 ,  H04N19/61 ,  H04N19/96 ,  H04N19/103 ,  H04N19/463 ,  H04N19/186

Abstract: A better rate distortion ratio is achieved by making interrelationships between coding parameters of different planes available for exploitation for the aim of redundancy reduction despite the additional overhead resulting from the need to signal the inter-plane prediction information to the decoder. In particular, the decision to use inter plane prediction or not may be performed for a plurality of planes individually. Additionally or alternatively, the decision may be done on a block basis considering one secondary plane.

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.

公开(公告)号：US10542278B2

公开(公告)日：2020-01-21

申请号：US16397166

申请日：2019-04-29

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Philipp Merkle ,  Christian Bartnik ,  Haricharan Lakshman ,  Detlev Marpe ,  Karsten Mueller ,  Thomas Wiegand ,  Gerhard Tech

IPC: H04N19/51 ,  H04N19/597 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119 ,  H04N19/46 ,  H04N19/196 ,  H04N19/96 ,  H04N19/593 ,  H04N19/157 ,  H04N19/82 ,  H04N19/52 ,  H04N19/14

Abstract: In accordance with a first aspect, the intra prediction direction of a neighboring, intra-predicted block is used in order to predict the extension direction of the wedgelet separation line of a current block, thereby reducing the side information rate necessitated in order to convey the partitioning information. In accordance with a second aspect, the idea is that previously reconstructed samples, i.e. reconstructed values of blocks preceding the current block in accordance with the coding/decoding order allow for at least a prediction of a correct placement of a starting point of the wedgelet separation line, namely by placing the starting point of the wedgelet separation line at a position of a maximum change between consecutive ones of a sequence of reconstructed values of samples of a line of samples extending adjacent to the current block along a circumference thereof. Both aspects may be used individually or in combination.

公开(公告)号：US10531129B2

公开(公告)日：2020-01-07

申请号：US16155281

申请日：2018-10-09

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Heiner Kirchhoffer ,  Martin Winken ,  Philipp Helle ,  Detlev Marpe ,  Heiko Schwarz ,  Thomas Wiegand

IPC: H04N19/17 ,  H04N19/46 ,  H04N19/52 ,  H04N19/53 ,  H04N19/59 ,  H04N19/61 ,  H04N19/96 ,  H04N19/169 ,  H04N19/176 ,  H04N19/593

Abstract: Coding schemes for coding a spatially sampled information signal using sub-division and coding schemes for coding a sub-division or a multitree structure are described, wherein representative embodiments relate to picture and/or video coding applications.

公开(公告)号：US10491926B2

公开(公告)日：2019-11-26

申请号：US16155281

申请日：2018-10-09

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Heiner Kirchhoffer ,  Martin Winken ,  Philipp Helle ,  Detlev Marpe ,  Heiko Schwarz ,  Thomas Wiegand

IPC: H04N19/17 ,  H04N19/46 ,  H04N19/52 ,  H04N19/53 ,  H04N19/59 ,  H04N19/61 ,  H04N19/96 ,  H04N19/169 ,  H04N19/176 ,  H04N19/593

Abstract: Coding schemes for coding a spatially sampled information signal using sub-division and coding schemes for coding a sub-division or a multitree structure are described, wherein representative embodiments relate to picture and/or video coding applications.

公开(公告)号：US10432978B2

公开(公告)日：2019-10-01

申请号：US15196342

申请日：2016-06-29

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Philipp Helle ,  Detlev Marpe ,  Simon Oudin ,  Thomas Wiegand

IPC: H04N19/96 ,  H04N19/463 ,  H04N19/159 ,  H04N19/593 ,  H04N19/70 ,  H04N19/176 ,  H04N19/53 ,  H04N19/52 ,  H04N19/30 ,  H04N19/44 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/42 ,  H04N19/513

Abstract: A better compromise between encoding complexity and achievable rate distortion ratio, and/or to achieve a better rate distortion ratio is achieved by using multitree sub-divisioning not only in order to subdivide a continuous area, namely the sample array, into leaf regions, but using the intermediate regions also to share coding parameters among the corresponding collocated leaf blocks. By this measure, coding procedures performed in tiles—leaf regions—locally, may be associated with coding parameters individually without having to, however, explicitly transmit the whole coding parameters for each leaf region separately. Rather, similarities may effectively exploited by using the multitree subdivision.

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.

公开(公告)号：US10382777B2

公开(公告)日：2019-08-13

申请号：US16007084

申请日：2018-06-13

Applicant: GE Video Compression LLC

Inventor： Heiko Schwarz ,  Heiner Kirchhoffer ,  Philipp Helle ,  Simon Oudin ,  Jan Stegemann ,  Benjamin Bross ,  Detlev Marpe ,  Thomas Wiegand

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

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.

公开(公告)号：US20190238896A1

公开(公告)日：2019-08-01

申请号：US16376671

申请日：2019-04-05

Applicant: GE Video Compression, LLC

Inventor： Philipp HELLE ,  Detlev Marpe ,  Simon Oudin ,  Thomas Wiegand

IPC: H04N19/96 ,  H04N19/513 ,  H04N19/53 ,  H04N19/176 ,  H04N19/159 ,  H04N19/70 ,  H04N19/30 ,  H04N19/593 ,  H04N19/52 ,  H04N19/463 ,  H04N19/129 ,  H04N19/124 ,  H04N19/42 ,  H04N19/13 ,  H04N19/44

Abstract: A better compromise between encoding complexity and achievable rate distortion ratio, and/or to achieve a better rate distortion ratio is achieved by using multitree sub-divisioning not only in order to subdivide a continuous area, namely the sample array, into leaf regions, but using the intermediate regions also to share coding parameters among the corresponding collocated leaf blocks. By this measure, coding procedures performed in tiles—leaf regions—locally, may be associated with coding parameters individually without having to, however, explicitly transmit the whole coding parameters for each leaf region separately. Rather, similarities may effectively exploited by using the multitree subdivision.