公开(公告)号：US20200320570A1

公开(公告)日：2020-10-08

申请号：US16907861

申请日：2020-06-22

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Philipp HELLE ,  Simon OUDIN ,  Martin WINKEN ,  Detlev MARPE ,  Thomas WIEGAND

IPC: G06Q30/02 ,  G06F16/00 ,  H04N19/105 ,  H04N19/147 ,  H04N19/196 ,  H04N19/52 ,  H04N19/139 ,  H04N19/176 ,  H04N19/119 ,  H04N19/46 ,  H04N19/61 ,  H04N19/96 ,  H04N19/463 ,  H04N19/14 ,  H04N19/186 ,  G06Q30/06

Abstract: A favorable merging or grouping of simply connected regions into which the array of information samples is sub-divided, is coded with a reduced amount of data. To this end, a predetermined relative locational relationship is defined enabling an identifying, for a predetermined simply connected region, of simply connected regions within the plurality of simply connected regions which have the predetermined relative locational relationship to the predetermined simply connected region. Namely, if the number is zero, a merge indicator for the predetermined simply connected region may be absent within the data stream. In other embodiments, spatial sub-division is performed depending on a first subset of syntax elements, followed by combining spatially neighboring simply connected regions depending on a second subset of syntax elements, to obtain an intermediate sub-division.

公开(公告)号：US20200252595A1

公开(公告)日：2020-08-06

申请号：US16857608

申请日：2020-04-24

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Thomas WIEGAND ,  Detlev MARPE ,  Karsten MUELLER ,  Philipp MERKLE ,  Gerhard TECH ,  Hunn RHEE ,  Heiko SCHWARZ

IPC: H04N13/161 ,  H04N19/597 ,  H04N19/196 ,  H04N19/139 ,  H04N19/61 ,  H04N19/159 ,  H04N19/176

Abstract: Embodiments are described which exploit a finding, according to which a higher compression rate or better rate/distortion ratio may be achieved by adopting or predicting second coding parameters used for encoding a second view of the multi-view signal from first coding parameters used in encoding a first view of the multi-view signal. In other words, the inventors found out that the redundancies between views of a multi-view signal are not restricted to the views themselves, such as the video information thereof, but that the coding parameters in parallely encoding these views show similarities which may be exploited in order to further improve the coding rate.

公开(公告)号：US20200186164A1

公开(公告)日：2020-06-11

申请号：US16779851

申请日：2020-02-03

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：US20200112730A1

公开(公告)日：2020-04-09

申请号：US16703918

申请日：2019-12-05

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Philipp MERKLE ,  Christian BARTNIK ,  Haricharan LAKSHMAN ,  Detlev MARPE ,  Karsten MUELLER ,  Thomas WIEGAND ,  Gerhard TECH

IPC: H04N19/176 ,  H04N19/597 ,  H04N19/105 ,  H04N19/70 ,  H04N19/119 ,  H04N19/46 ,  H04N19/196 ,  H04N19/96 ,  H04N19/593 ,  H04N19/157 ,  H04N19/82 ,  H04N19/126 ,  H04N19/61

Abstract: The way of predicting a current block by assigning constant partition values to the partitions of a bi-partitioning of a block is quite effective, especially in case of coding sample arrays such as depth/disparity maps where the content of these sample arrays is mostly composed of plateaus or simple connected regions of similar value separated from each other by steep edges. The transmission of such constant partition values would, however, still need a considerable amount of side information which should be avoided. This side information rate may be further reduced if mean values of values of neighboring samples associated or adjoining the respective partitions are used as predictors for the constant partition values.

公开(公告)号：US20200036956A1

公开(公告)日：2020-01-30

申请号：US16592433

申请日：2019-10-03

Applicant: GE Video Compression, LLC

Inventor： Heiko SCHWARZ ,  Thomas WIEGAND

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

Abstract: This disclosure is directed to coding a multi-view signal, which includes processing a list of plurality of motion vector candidates associated with a coding block of a current picture in a dependent view of the multi-view signal. Such processing includes estimating a first motion vector based on a second motion vector associated with a reference block in a current picture of a reference view of the multi-view signal, the reference block corresponding to the coding block of the current picture in the dependent view. The first motion vector is added into the list, and an index is used that specifies at least one candidate from the list to be used for motion-compensated prediction. The coding block in the current picture is coded by performing the motion-compensated prediction based on the at least one candidate indicated by the index.

公开(公告)号：US20190327474A1

公开(公告)日：2019-10-24

申请号：US16454247

申请日：2019-06-27

Applicant: GE Video Compression, LLC

Inventor： Valeri GEORGE ,  Benjamin BROSS ,  Heiner KIRCHHOFFER ,  Detlev MARPE ,  Tung NGUYEN ,  Matthias PREISS ,  Mischa SIEKMANN ,  Jan STEGEMANN ,  Thomas WIEGAND ,  Christian BARTNIK

IPC: H04N19/13 ,  H04N19/174 ,  H04N19/61 ,  H04N19/91 ,  H04N19/513 ,  H04N19/52 ,  H04N19/124 ,  H04N19/184 ,  H04N19/50 ,  H04N19/132 ,  H03M7/42 ,  H04N19/70

Abstract: A decoder for decoding a data stream into which media data is coded has a mode switch configured to activate a low-complexity mode or a high-efficiency mode depending on the data stream, an entropy decoding engine configured to retrieve each symbol of a sequence of symbols by entropy decoding using a selected one of a plurality of entropy decoding schemes, a desymbolizer configured to desymbolize the sequence of symbols to obtain a sequence of syntax elements, a reconstructor configured to reconstruct the media data based on the sequence of syntax elements, selection depending on the activated low-complexity mode or the high-efficiency mode. In another aspect, a desymbolizer is configured to perform desymbolization such that the control parameter varies in accordance with the data stream at a first rate in case of the high-efficiency mode being activated and the control parameter is constant irrespective of the data stream or changes depending on the data stream, but at a second lower rate in case of the low-complexity mode being activated.

公开(公告)号：US20190306539A1

公开(公告)日：2019-10-03

申请号：US16446150

申请日：2019-06-19

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Heiner KIRCHHOFFER ,  Martin WINKEN ,  Philipp HELLE ,  Detlev MARPE ,  Heiko SCHWARZ ,  Thomas WIEGAND

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

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：US20190261019A1

公开(公告)日：2019-08-22

申请号：US16403887

申请日：2019-05-06

Applicant: GE Video Compression, LLC

Inventor： Thomas WIEGAND ,  Karsten MUELLER ,  Philipp MERKLE

IPC: H04N19/597 ,  H04N19/80 ,  H04N13/111 ,  H04N19/124 ,  H04N19/567 ,  H04N19/172 ,  H04N19/177 ,  H04N19/105 ,  H04N19/513 ,  H04N19/17 ,  H04N19/109 ,  H04N19/11 ,  H04N19/61 ,  H04N19/46 ,  H04N19/30

Abstract: Hybrid video decoder supporting intermediate view synthesis of an intermediate view video from a first- and a second-view video which are predictively coded into a multi-view data signal with frames of the second-view video being spatially subdivided into sub-regions and the multi-view data signal having a prediction mode is provided, having: an extractor configured to respectively extract, from the multi-view data signal, for sub-regions of the frames of the second-view video, a disparity vector and a prediction residual; a predictive reconstructor configured to reconstruct the sub-regions of the frames of the second-view video, by generating a prediction from a reconstructed version of a portion of frames of the first-view video using the disparity vectors and a prediction residual for the respective sub-regions; and an intermediate view synthesizer configured to reconstruct first portions of the intermediate view video.

公开(公告)号：US20190174148A1

公开(公告)日：2019-06-06

申请号：US16271094

申请日：2019-02-08

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Philipp HELLE ,  Detlev MARPE ,  Simon OUDIN ,  Thomas WIEGAND

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

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：US20190110046A1

公开(公告)日：2019-04-11

申请号：US16142195

申请日：2018-09-26

Applicant: GE Video Compression, LLC

Inventor： Tobias HINZ ,  Haricharan LAKSHMAN ,  Jan STEGEMANN ,  Philipp HELLE ,  Mischa SIEKMANN ,  Karsten SUEHRING ,  Detlev MARPE ,  Heiko SCHWARZ ,  Christian BARTNIK ,  Ali Atef Ibrahim KHAIRAT ABDELHAMID ,  Heiner KIRCHHOFFER ,  Thomas WIEGAND

IPC: H04N19/119 ,  H04N19/86 ,  H04N19/105 ,  H04N19/70 ,  H04N19/615 ,  H04N19/61 ,  H04N19/593 ,  H04N19/59 ,  H04N19/587 ,  H04N19/503 ,  H04N19/48 ,  H04N19/82 ,  H04N19/107 ,  H04N19/33 ,  H04N19/196 ,  H04N19/187 ,  H04N19/18 ,  H04N19/176 ,  H04N19/157 ,  H04N19/137 ,  H04N19/117

Abstract: Scalable video coding is rendered more efficient by deriving/selecting a subblock subdivision to be used for enhancement layer prediction, among a set of possible subblock subdivisions of an enhancement layer block by evaluating the spatial variation of the base layer coding parameters over the base layer signal. By this measure, less of the signalization overhead has to be spent on signaling this subblock subdivision within the enhancement layer data stream, if any. The subblock subdivision thus selected may be used in predictively coding/decoding the enhancement layer signal.