Patent search ap:("GE Video Compression Page LLC.") AND inv:"Haricharan LAKSHMAN"

31.

发明申请
SCALABLE VIDEO CODING USING INTER-LAYER PREDICTION CONTRIBUTION TO ENHANCEMENT LAYER PREDICTION 有权

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.

32.

发明申请
EFFECTIVE WEDGELET PARTITION CODING USING SPATIAL PREDICTION 有权

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.

33.

发明申请
EFFECTIVE PREDICTION USING PARTITION CODING 审中-公开

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.

34.

发明申请
SCALABLE VIDEO CODING USING DERIVATION OF SUBBLOCK SUBDIVISION FOR PREDICTION FROM BASE LAYER 审中-公开

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.