公开(公告)号：US20210281861A1

公开(公告)日：2021-09-09

申请号：US17330197

申请日：2021-05-25

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：US20210266563A9

公开(公告)日：2021-08-26

申请号：US16459940

申请日：2019-07-02

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: H04N19/159 ,  H04N19/117 ,  H04N19/136 ,  H04N19/176

Abstract: A scalable video decoder is described which is configured to reconstruct a base layer signal from a coded data stream to obtain a reconstructed base layer signal; and reconstruct an enhancement layer signal including spatially or temporally predicting a portion of an enhancement layer signal, currently to be reconstructed, from an already reconstructed portion of the enhancement layer signal to obtain an enhancement layer internal prediction signal; forming, at the portion currently to be reconstructed, a weighted average of an inter-layer prediction signal obtained from the reconstructed base layer signal, and the enhancement layer internal prediction signal to obtain an enhancement layer prediction signal such that a weighting between the inter-layer prediction signal and the enhancement layer internal prediction signal varies over different spatial frequency components; and predictively reconstructing the enhancement layer signal using the enhancement layer prediction signal.

公开(公告)号：US20210211687A1

公开(公告)日：2021-07-08

申请号：US17211542

申请日：2021-03-24

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Karsten SUEHRING ,  Thomas SCHIERL ,  Detlev MARPE ,  Robert SKUPIN ,  Yago SANCHEZ DE LA FUENTE ,  Gerhard TECH

IPC: H04N19/30 ,  H04N19/65 ,  H04N19/70 ,  H04L29/08 ,  H04N19/187 ,  H04N19/423 ,  H04N19/44 ,  H04N19/50 ,  H04N19/85 ,  H04N19/119 ,  H04N19/166 ,  H04N19/174 ,  H04N19/593 ,  H04N19/66 ,  H04N19/89 ,  H04N19/91 ,  H04N19/33

Abstract: A signaling of at least one characteristic for layers of a multi-layered video signal such as, for example, for each layer the indication of dependent layers to which the respective layer directly relates via inter-layer prediction, or the signaling of the afore-mentioned second inter-dependency syntax structure, is described. A maximum syntax element is signaled within the multi-layered video signal to indicate a maximally used value of an extension layer-ID field of the packets of the multi-layered video signal, the scope of the maximum syntax element being, for example, a predetermined portion of the multi-layered video signal extending, for example, across several portions of the multi-layered video signal. Accordingly, it is feasible for devices such as decoders or network elements receiving the multi-layered video signal to gain, for a relatively large predetermined portion of the multi-layered video signal, knowledge about the actually consumed portion of the possible domain of possible values.

公开(公告)号：US20210211686A1

公开(公告)日：2021-07-08

申请号：US17212396

申请日：2021-03-25

Applicant: GE VIDEO COMPRESSION, LLC

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

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

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：US20210160524A1

公开(公告)日：2021-05-27

申请号：US17166822

申请日：2021-02-03

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

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：US20210120271A1

公开(公告)日：2021-04-22

申请号：US17136716

申请日：2020-12-29

Applicant: GE Video Compression, LLC

Inventor： Tung NGUYEN ,  Heiner KIRCHHOFFER ,  Detlev MARPE

IPC: H04N19/60 ,  H04N19/91 ,  H03M7/40

Abstract: An idea used herein is to use the same function for the dependency of the context and the dependency of the symbolization parameter on previously coded/decoded transform coefficients. Using the same function—with varying function parameter—may even be used with respect to different transform block sizes and/or frequency portions of the transform blocks in case of the transform coefficients being spatially arranged in transform blocks. A further variant of this idea is to use the same function for the dependency of a symbolization parameter on previously coded/decoded transform coefficients for different sizes of the current transform coefficient's transform block, different information component types of the current transform coefficient's transform block and/or different frequency portions the current transform coefficient is located within the transform block.

公开(公告)号：US20210044814A1

公开(公告)日：2021-02-11

申请号：US17082096

申请日：2020-10-28

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Karsten SUEHRING ,  Thomas SCHIERL ,  Detlev MARPE ,  Robert SKUPIN ,  Yago SANCHEZ DE LA FUENTE ,  Gerhard TECH

IPC: H04N19/30 ,  H04N19/44 ,  H04N19/70 ,  H04N19/66 ,  H04L29/08 ,  H04N19/91 ,  H04N19/423 ,  H04N19/593 ,  H04N19/89 ,  H04N19/65 ,  H04N19/33 ,  H04N19/187 ,  H04N19/50 ,  H04N19/85 ,  H04N19/119 ,  H04N19/174 ,  H04N19/166

Abstract: A signaling of the layer ID is described which each of the packets of a multi-layered video signal is associated with. In particular, an efficient way of signaling this layer association is achieved, with nevertheless maintaining the backward compatibility with codecs according to which a certain value of the base layer-ID field is restricted to be non-extendable such as base layer-ID value 0 in the base layer-ID field. Instead of circumventing this restriction specifically with respect to this non-extendable base layer-ID value, the layer-ID of portions of the multi-layer data stream is signaled in an extendable manner by sub-dividing the base layer-ID field into a first sub-field and a second sub-field: whenever the first sub-field of the base layer-ID field fulfills a predetermined criterion, an extension layer-ID field is provided, and if the first sub-field of the base layer-ID field does not fulfill the predetermined criterion, the extension layer-ID field is omitted.

公开(公告)号：US20210029365A1

公开(公告)日：2021-01-28

申请号：US17065934

申请日：2020-10-08

Applicant: GE Video Compression, LLC

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

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

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：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.