公开(公告)号：US20190253729A1

公开(公告)日：2019-08-15

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 ,  H04N19/52 ,  H04N19/82 ,  H04N19/157 ,  H04N19/196 ,  H04N19/593 ,  H04N19/96 ,  H04N19/597 ,  H04N19/46 ,  H04N19/119 ,  H04N19/70 ,  H04N19/176 ,  H04N19/105

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

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：US20190246121A1

公开(公告)日：2019-08-08

申请号：US16385391

申请日：2019-04-16

Applicant: GE Video Compression, LLC

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

IPC: H04N19/18 ,  H04N19/59 ,  H04N19/124 ,  H04N19/139 ,  H04N19/51 ,  H04N19/91 ,  H04N19/136 ,  H04N19/50 ,  H04N19/129 ,  H04N19/13 ,  H04N19/46 ,  H04N19/70 ,  H04N19/176 ,  H04N19/61

Abstract: A higher coding efficiency for coding a significance map indicating positions of significant transform coefficients within a transform coefficient block is achieved by the scan order by which the sequentially extracted syntax elements indicating, for associated positions within the transform coefficient block, as to whether at the respective position a significant or insignificant transform coefficient is situated, are sequentially associated to the positions of the transform coefficient block, among the positions of the transform coefficient block depends on the positions of the significant transform coefficients indicated by previously associated syntax elements. Alternatively, the first-type elements may be context-adaptively entropy decoded using contexts which are individually selected for each of the syntax elements dependent on a number of significant transform coefficients in a neighborhood of the respective syntax element, indicated as being significant by any of the preceding syntax elements.

公开(公告)号：US20190197579A1

公开(公告)日：2019-06-27

申请号：US16268136

申请日：2019-02-05

Applicant: GE VIDEO COMPRESSION, LLC

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

IPC: G06Q30/02 ,  G06F16/00 ,  H04N19/147 ,  H04N19/105 ,  H04N19/186 ,  H04N19/14 ,  H04N19/463 ,  H04N19/96 ,  H04N19/61 ,  H04N19/196 ,  H04N19/46 ,  H04N19/119 ,  H04N19/176 ,  H04N19/139 ,  H04N19/52 ,  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：US20190191165A1

公开(公告)日：2019-06-20

申请号：US16259738

申请日：2019-01-28

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

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：US20190158861A1

公开(公告)日：2019-05-23

申请号：US16256064

申请日：2019-01-24

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Tung NGUYEN ,  Ali Atef Ibrahim KHAIRAT ABDELHAMID ,  Detlev MARPE

IPC: H04N19/44 ,  H04N19/186 ,  H04N19/176 ,  H04N19/119 ,  H04N19/597 ,  H04N19/96 ,  H04N19/503 ,  H04N19/50 ,  H04N19/593

CPC classification number: H04N19/44 ,  H04N19/119 ,  H04N19/176 ,  H04N19/186 ,  H04N19/50 ,  H04N19/503 ,  H04N19/593 ,  H04N19/597 ,  H04N19/96

Abstract: Reconstructing a second component signal relating to a second component of a multi-component picture from a spatially corresponding portion of a reconstructed first component signal and a correction signal derived from a data stream for the second component promises increased coding efficiency over a broader range of multi-component picture content. By including the spatially corresponding portion of the reconstructed first component signal into the reconstruction of the second component signal, any remaining inter-component redundancies/correlations present such as still present despite a possibly a priori performed component space transformation, or present because of having been introduced by such a priori performed component space transformation, for example, may readily be removed by way of the inter-component redundancy/correlation reduction of the second component signal.

公开(公告)号：US20190116360A1

公开(公告)日：2019-04-18

申请号：US16180292

申请日：2018-11-05

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

Abstract: The coding efficiency of scalable video coding is increased by substituting missing spatial intra prediction parameter candidates in a spatial neighborhood of a current block of the enhancement layer by use of intra prediction parameters of a co-located block of the base layer signal. By this measure, the coding efficiency for coding the spatial intra prediction parameters is increased due to the improved prediction quality of the set of intra prediction parameters of the enhancement layer, or, more precisely stated, the increased likelihood, that appropriate predictors for the intra prediction parameters for an intra predicted block of the enhancement layer are available thereby increasing the likelihood that the signaling of the intra prediction parameter of the respective enhancement layer block may be performed, on average, with less bits.

公开(公告)号：US20190098323A1

公开(公告)日：2019-03-28

申请号：US16198275

申请日：2018-11-21

Applicant: GE Video Compression, LLC

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

IPC: H04N19/18 ,  H04N19/129 ,  H04N19/61 ,  H04N19/136 ,  H04N19/91 ,  H04N19/51 ,  H04N19/139 ,  H04N19/13 ,  H04N19/59 ,  H04N19/50 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46 ,  H04N19/124

Abstract: A higher coding efficiency for coding a significance map indicating positions of significant transform coefficients within a transform coefficient block is achieved by the scan order by which the sequentially extracted syntax elements indicating, for associated positions within the transform coefficient block, as to whether at the respective position a significant or insignificant transform coefficient is situated, are sequentially associated to the positions of the transform coefficient block, among the positions of the transform coefficient block depends on the positions of the significant transform coefficients indicated by previously associated syntax elements. Alternatively, the first-type elements may be context-adaptively entropy decoded using contexts which are individually selected for each of the syntax elements dependent on a number of significant transform coefficients in a neighborhood of the respective syntax element, indicated as being significant by any of the preceding syntax elements.

公开(公告)号：US20190098322A1

公开(公告)日：2019-03-28

申请号：US16198170

申请日：2018-11-21

Applicant: GE Video Compression, LLC

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

IPC: H04N19/18 ,  H04N19/50 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46 ,  H04N19/13 ,  H04N19/129 ,  H04N19/59 ,  H04N19/136 ,  H04N19/91 ,  H04N19/51 ,  H04N19/139 ,  H04N19/124 ,  H04N19/61

CPC classification number: H04N19/18 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/136 ,  H04N19/139 ,  H04N19/176 ,  H04N19/46 ,  H04N19/50 ,  H04N19/51 ,  H04N19/59 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

Abstract: A higher coding efficiency for coding a significance map indicating positions of significant transform coefficients within a transform coefficient block is achieved by the scan order by which the sequentially extracted syntax elements indicating, for associated positions within the transform coefficient block, as to whether at the respective position a significant or insignificant transform coefficient is situated, are sequentially associated to the positions of the transform coefficient block, among the positions of the transform coefficient block depends on the positions of the significant transform coefficients indicated by previously associated syntax elements. Alternatively, the first-type elements may be context-adaptively entropy decoded using contexts which are individually selected for each of the syntax elements dependent on a number of significant transform coefficients in a neighborhood of the respective syntax element, indicated as being significant by any of the preceding syntax elements.

公开(公告)号：US20190045201A1

公开(公告)日：2019-02-07

申请号：US16153307

申请日：2018-10-05

Applicant: GE Video Compression, LLC

Inventor： Thomas SCHIERL ,  Valeri GEORGE ,  Anastasia HENKEL ,  Detlev MARPE ,  Karsten GRÜNEBERG ,  Robert SKUPIN

IPC: H04N19/169 ,  H04N19/91 ,  H04N19/13 ,  H04N19/436 ,  H04N19/463 ,  H04N19/70 ,  H04N19/174

Abstract: Parallel processing concepts such as wavefront parallel processing, are realized with a reduced end-to-end delay by giving up the usual slice concept according to which slices are either coded/decoded completely independent from areas of the picture outside of the respective slice, or at least independent from areas outside the respective slice as far as the entropy coding is concerned, namely in favor of slices of different modes, namely ones called dependent slices which allow for interdependencies across slice boundaries, and others which do not, called normal slices, for example. Combined with the aspect or not, WPP processing concept is made more efficiently by using the slices' start syntax portions to locate WPP entry points.

公开(公告)号：US20190037245A1

公开(公告)日：2019-01-31

申请号：US16148417

申请日：2018-10-01

Applicant: GE VIDEO COMPRESSION, LLC

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

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

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.