公开(公告)号：US11252419B2

公开(公告)日：2022-02-15

申请号：US16923205

申请日：2020-07-08

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 ,  H04N19/129 ,  H04N19/136 ,  H04N19/13 ,  H04N19/61 ,  H04N19/91 ,  H04N19/124 ,  H04N19/139 ,  H04N19/51 ,  H04N19/59

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：US11115681B2

公开(公告)日：2021-09-07

申请号：US16855058

申请日：2020-04-22

Applicant: GE Video Compression, LLC

Inventor： Thomas Wiegand ,  Karsten Mueller ,  Philipp Merkle

IPC: H04N19/136 ,  H04N19/597 ,  H04N13/111 ,  H04N19/46 ,  H04N19/513 ,  H04N19/61 ,  H04N19/11 ,  H04N19/109 ,  H04N19/17 ,  H04N19/105 ,  H04N19/172 ,  H04N19/177 ,  H04N19/567 ,  H04N19/124 ,  H04N19/30 ,  H04N19/80 ,  H04N13/00

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：US11057630B2

公开(公告)日：2021-07-06

申请号：US17038777

申请日：2020-09-30

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Philipp Helle ,  Heiko Schwarz ,  Detlev Marpe ,  Thomas Wiegand ,  Simon Oudin ,  Benjamin Bross

IPC: H04N19/176 ,  H04N19/119 ,  H04N19/61 ,  H04N19/196 ,  H04N19/46 ,  H04N19/147 ,  H04N19/93 ,  H04N19/70

Abstract: A further coding efficiency increase may be achieved if for a current block of a picture, for which the bit stream signals one of supported partitioning patterns, a reversal of the partitioning by block merging is avoided. In particular, if the signaled one of the supported partitioning patterns specifies a subdivision of the block into two or more further blocks, a removal of certain coding parameter candidates for all further blocks, except a first further block of the further blocks in a coding order, is performed. Particularly, those coding parameter candidates are removed from the set of coding parameter candidates for the respective further block, the coding parameters of which are the same as coding parameters associated with any of the further blocks which, when being merged with the respective further block, would result in one of the supported partitioning pattern. This avoids redundancy between partitioning coding and merging coding.

公开(公告)号：US11032562B2

公开(公告)日：2021-06-08

申请号：US17010987

申请日：2020-09-03

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 ,  H04N19/196 ,  H04N19/96 ,  H04N19/593 ,  H04N19/157 ,  H04N19/82 ,  H04N19/52 ,  H04N19/46 ,  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：US11032555B2

公开(公告)日：2021-06-08

申请号：US17012224

申请日：2020-09-04

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 ,  H04N19/96 ,  H04N19/593 ,  H04N19/157 ,  H04N19/82 ,  H04N19/126 ,  H04N19/61 ,  H04N19/196 ,  H04N19/14

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：US10986352B2

公开(公告)日：2021-04-20

申请号：US17012506

申请日：2020-09-04

Applicant: GE VIDEO COMPRESSION, LLC

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

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

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.

公开(公告)号：US10958936B2

公开(公告)日：2021-03-23

申请号：US16434286

申请日：2019-06-07

Applicant: GE Video Compression, LLC

Inventor： Thomas Wiegand ,  Martin Winken

IPC: H04N19/36 ,  H04N19/593 ,  H04N19/117 ,  H04N19/184 ,  H04N19/80 ,  H04N19/33 ,  H04N19/82

Abstract: To increase efficiency of a bit-depth scalable data-stream an inter-layer prediction is obtained by mapping samples of the representation of the picture or video source data with a first picture sample bit-depth from a first dynamic range corresponding to the first picture sample bit-depth to a second dynamic range greater than the first dynamic range and corresponding to a second picture sample bit-depth being higher than the first picture sample bit-depth by use of one or more global mapping functions being constant within the picture or video source data or varying at a first granularity, and a local mapping function locally modifying the one or more global mapping functions and varying at a second granularity smaller than the first granularity, with forming the quality-scalable data-stream based on the local mapping function such that the local mapping function is derivable from the quality-scalable data-stream.

公开(公告)号：US10911753B2

公开(公告)日：2021-02-02

申请号：US16736845

申请日：2020-01-08

Applicant: GE VIDEO COMPRESSION, LLC

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

IPC: H04N19/105 ,  H04N19/597 ,  H04N19/176 ,  H04N19/70 ,  H04N19/119 ,  H04N19/46 ,  H04N19/96 ,  H04N19/593 ,  H04N19/124 ,  H04N19/157 ,  H04N19/174 ,  H04N19/44 ,  H04N19/82 ,  H04N19/167

Abstract: Wedgelet separation lines of neighboring blocks are predicted from each other by aligning the wedgelet separation lines of such neighboring blocks to each other, thereby reducing the side information coding rate that may be used.

公开(公告)号：US10887617B2

公开(公告)日：2021-01-05

申请号：US16291146

申请日：2019-03-04

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Sebastian Bosse ,  Heiko Schwarz ,  Thomas Wiegand ,  Heribert Brust

IPC: H04N19/52 ,  H04N19/597

Abstract: Rendered portions of a renderable portion of a first view of a multi-view signal are introduced into a prediction loop of a multi-view encoder to form a reference signal for the block-based prediction of the encoder's view predictor may improve the prediction and thereby increasing the coding efficiency. The introduction may be performed by completely inserting the renderable portion into the prediction loop to form new reference pictures with their own reference picture indices in addition to reference pictures obtained by the reconstructed version of the multi-view signal of the block-based prediction. Alternatively, the rendered portion may be introduced into the prediction loop completely, but with replacing the normal prediction reference signal, i.e., the normally reconstructed signal as obtained by block-based prediction. Alternatively, it may be signaled within the data stream which portions of the renderable portion are used to replace respective portions in the normally reconstructed signal.

公开(公告)号：US10855990B2

公开(公告)日：2020-12-01

申请号：US15195266

申请日：2016-06-28

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.