公开(公告)号：US10321148B2

公开(公告)日：2019-06-11

申请号：US15657813

申请日：2017-07-24

Applicant: GE VIDEO COMPRESSION, LLC

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

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

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：US10321139B2

公开(公告)日：2019-06-11

申请号：US15655445

申请日：2017-07-20

Applicant: GE VIDEO COMPRESSION, LLC

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

IPC: H04N19/14 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/96 ,  H04N19/105 ,  H04N19/119 ,  H04N19/126 ,  H04N19/157 ,  H04N19/176 ,  H04N19/196 ,  H04N19/593 ,  H04N19/597

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：US10257544B2

公开(公告)日：2019-04-09

申请号：US15413852

申请日：2017-01-24

Applicant: GE VIDEO COMPRESSION, LLC

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

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

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：US10230954B2

公开(公告)日：2019-03-12

申请号：US16040764

申请日：2018-07-20

Applicant: GE Video Compression, LLC

Inventor： Valeri George ,  Benjamin Bross ,  Heiner Kirchhoffer ,  Detlev Marpe ,  Tung Nguyen ,  Matthias Preiss ,  Mischa Siekmann ,  Jan Stegemann ,  Thomas Wiegand

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

Abstract: An entropy decoder is configured to, for horizontal and vertical components of motion vector differences, derive a truncated unary code from the data stream using context-adaptive binary entropy decoding with exactly one context per bin position of the truncated unary code, which is common for horizontal and vertical components of the motion vector differences, and an Exp-Golomb code using a constant equi-probability bypass mode to obtain the binarizations of the motion vector differences. A desymbolizer is configured to debinarize the binarizations of the motion vector difference syntax elements to obtain integer values of the horizontal and vertical components of the motion vector differences. A reconstructor is configured to reconstruct a video based on the integer values of the horizontal and vertical components of the motion vector differences.

公开(公告)号：US10212419B2

公开(公告)日：2019-02-19

申请号：US14666634

申请日：2015-03-24

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: H04N19/103 ,  H04N19/46 ,  H04N19/119 ,  H04N19/105 ,  H04N19/117 ,  H04N19/157 ,  H04N19/187 ,  H04N19/82 ,  H04N19/33 ,  H04N19/587 ,  H04N19/59 ,  H04N19/18 ,  H04N19/48 ,  H04N19/61 ,  H04N19/70 ,  H04N19/86 ,  H04N19/107 ,  H04N19/137 ,  H04N19/176 ,  H04N19/196 ,  H04N19/503 ,  H04N19/593 ,  H04N19/615 ,  H04N19/11 ,  H04N19/463

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.

公开(公告)号：US10097810B2

公开(公告)日：2018-10-09

申请号：US14272671

申请日：2014-05-08

Applicant: GE Video Compression, LLC

Inventor： Heiko Schwarz ,  Thomas Wiegand

IPC: H04N19/597 ,  H04N13/161 ,  H04N13/128 ,  H04N19/52 ,  H04N19/46 ,  H04N19/194 ,  H04N13/00 ,  H04N19/513 ,  H04N19/895

Abstract: The unavailability of a depth map for a current picture of a reference view may be adequately addressed so as to reduce inter-view redundancies by estimating a depth map for the pictures of the reference and dependent views and updating same using motion and/or disparity data signaled within the multi-view data stream.

公开(公告)号：US10057603B2

公开(公告)日：2018-08-21

申请号：US15843679

申请日：2017-12-15

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: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/91 ,  H04N19/184 ,  H04N19/174 ,  H04N19/513 ,  H04N19/132 ,  H03M7/42 ,  H04N19/124 ,  H04N19/61 ,  H04N19/13 ,  H04N19/70 ,  H04N19/50 ,  H04N19/52

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：US09936227B2

公开(公告)日：2018-04-03

申请号：US15641992

申请日：2017-07-05

Applicant: GE Video Compression, LLC

Inventor： Valeri George ,  Benjamin Bross ,  Heiner Kirchhoffer ,  Detlev Marpe ,  Tung Nguyen ,  Matthias Preiss ,  Mischa Siekmann ,  Jan Stegemann ,  Thomas Wiegand

IPC: H04N7/12 ,  H04N19/91 ,  H04N19/52 ,  H04N19/50 ,  H04N19/70 ,  H04N19/13 ,  H04N19/124 ,  H03M7/42 ,  H04N19/132 ,  H04N19/513 ,  H04N19/61

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

Abstract: An entropy decoder is configured to, for horizontal and vertical components of motion vector differences, derive a truncated unary code from the data stream using context-adaptive binary entropy decoding with exactly one context per bin position of the truncated unary code, which is common for horizontal and vertical components of the motion vector differences, and an Exp-Golomb code using a constant equi-probability bypass mode to obtain the binarizations of the motion vector differences. A desymbolizer is configured to debinarize the binarizations of the motion vector difference syntax elements to obtain integer values of the horizontal and vertical components of the motion vector differences. A reconstructor is configured to reconstruct a video based on the integer values of the horizontal and vertical components of the motion vector differences.

公开(公告)号：US09860563B2

公开(公告)日：2018-01-02

申请号：US15257447

申请日：2016-09-06

Applicant: GE Video Compression, LLC

Inventor： Thomas Wiegand ,  Karsten Mueller ,  Philipp Merkle

IPC: H04N19/17 ,  H04N19/11 ,  H04N19/597 ,  H04N13/00 ,  H04N19/105 ,  H04N19/46 ,  H04N19/513 ,  H04N19/61 ,  H04N19/109 ,  H04N19/172 ,  H04N19/177 ,  H04N19/567 ,  H04N19/124 ,  H04N19/30 ,  H04N19/80

CPC classification number: H04N19/597 ,  H04N13/111 ,  H04N19/105 ,  H04N19/109 ,  H04N19/11 ,  H04N19/124 ,  H04N19/17 ,  H04N19/172 ,  H04N19/177 ,  H04N19/30 ,  H04N19/46 ,  H04N19/513 ,  H04N19/521 ,  H04N19/567 ,  H04N19/61 ,  H04N19/80 ,  H04N2013/0081

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：US09756330B2

公开(公告)日：2017-09-05

申请号：US14273601

申请日：2014-05-09

Applicant: GE Video Compression, LLC

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

IPC: H04N7/12 ,  H04N19/44 ,  H04N19/597 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119 ,  H04N19/46 ,  H04N19/196 ,  H04N19/96 ,  H04N19/593 ,  H04N19/103 ,  H04N19/157 ,  H04N19/82 ,  H04N19/14

CPC classification number: H04N19/176 ,  H04N19/103 ,  H04N19/105 ,  H04N19/119 ,  H04N19/14 ,  H04N19/157 ,  H04N19/196 ,  H04N19/23 ,  H04N19/44 ,  H04N19/46 ,  H04N19/593 ,  H04N19/597 ,  H04N19/70 ,  H04N19/82 ,  H04N19/96

Abstract: Although wedgelet-based partitioning seems to represent a better tradeoff between side information rate on the one hand and achievable variety in partitioning possibilities on the other hand, compared to contour partitioning, the ability to alleviate the constraints of the partitioning to the extent that the partitions have to be wedgelet partitions, enables applying relatively uncomplex statistical analysis onto overlaid spatially sampled texture information in order to derive a good predictor for the bi-segmentation in a depth/disparity map. Thus, in accordance with a first aspect it is exactly the increase of the freedom which alleviates the signaling overhead provided that co-located texture information in form of a picture is present. Another aspect pertains the possibility to save side information rate involved with signaling a respective coding mode supporting irregular partitioning.