公开(公告)号：US20220109842A1

公开(公告)日：2022-04-07

申请号：US17407974

申请日：2021-08-20

Applicant: GE Video Compression, LLC

Inventor： Philipp MERKLE ,  Detlev MARPE ,  Karsten Mueller

IPC: H04N19/13 ,  H04N19/176 ,  H04N19/119 ,  H04N19/463 ,  H04N19/91

Abstract: Wedgelet-based coding for coding blocks of varying size is rendered more efficient by the usage of a variable length coded syntax element having a prefix and a suffix, wherein the size of the suffix is dependent on the prefix and the size of the current coding block. By this measure, it is feasible to efficiently adapt the length of the variable-length coded syntax element which controls the bi-partitioning of the current coding block to the actual needs, namely the size, of the current coding block, and the variability of the bi-partitioning by varying the wedglet separation line, respectively. The greater the current coding block is, the longer the variable-length coded syntax element may be. This length dependency may even be sufficiently effective in terms of coding efficiency so that the variable length coded syntax element may be coded without context-adaptive entropy coding, but directly or using fixed-equal-probability binary entropy coding.

公开(公告)号：US10924748B2

公开(公告)日：2021-02-16

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：US10771814B2

公开(公告)日：2020-09-08

申请号：US16403887

申请日：2019-05-06

Applicant: GE Video Compression, LLC

Inventor： Thomas Wiegand ,  Karsten Mueller ,  Philipp Merkle

IPC: 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：US09462276B2

公开(公告)日：2016-10-04

申请号：US14743094

申请日：2015-06-18

Applicant: GE Video Compression, LLC

Inventor： Thomas Wiegand ,  Karsten Mueller ,  Philipp Merkle

IPC: H04N7/32 ,  H04N19/105 ,  H04N13/00 ,  H04N19/597 ,  H04N19/46 ,  H04N19/513 ,  H04N19/61 ,  H04N19/11 ,  H04N19/109 ,  H04N19/17 ,  H04N19/172 ,  H04N19/177 ,  H04N19/567 ,  H04N19/00

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：US12047547B2

公开(公告)日：2024-07-23

申请号：US17824336

申请日：2022-05-25

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Gerhard Tech ,  Karsten Mueller ,  Thomas Wiegand

IPC: H04N13/161 ,  G06T15/20 ,  H04N13/111 ,  H04N13/122 ,  H04N13/128

CPC classification number: H04N13/161 ,  G06T15/205 ,  H04N13/111 ,  H04N13/122 ,  H04N13/128

Abstract: An apparatus for determining a measure for a distortion change of a first view synthesized from a second view, caused by a modification of a depth map of the second view from a first state to a second state, is configured—starting from a current synthesis state of the first view corresponding to a synthesis from the second view having the depth map modified to the second state in an already processed portion of the depth map and having the depth map unmodified at the first state in a yet to be processed portion of the depth map—to compute a possible successor synthesis state corresponding to a synthesis of the first view from the second view having the depth map modified to the second state in an already processed portion plus a currently processed portion and having the depth map unmodified at the first state in the yet to be processed portion without the currently processed portion; and to determine a distortion change of a distortion of the current synthesis state of the first view relative to an undistorted version of the first view to a distortion of the possible successor synthesis state of the first view relative to the undistorted version of the first view.

公开(公告)号：US11843757B2

公开(公告)日：2023-12-12

申请号：US17715757

申请日：2022-04-07

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

CPC classification number: H04N13/161 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/197 ,  H04N19/597 ,  H04N19/61

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 parallelly encoding these views show similarities which may be exploited in order to further improve the coding rate.

公开(公告)号：US11330242B2

公开(公告)日：2022-05-10

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.

公开(公告)号：US11128865B2

公开(公告)日：2021-09-21

申请号：US16256128

申请日：2019-01-24

Applicant: GE VIDEO COMPRESSION, LLC

Inventor： Philipp Merkle ,  Detlev Marpe ,  Karsten Mueller

IPC: H04N19/13 ,  H04N19/91 ,  H04N19/176 ,  H04N19/119 ,  H04N19/463

Abstract: Wedgelet-based coding for coding blocks of varying size is rendered more efficient by the usage of a variable length coded syntax element having a prefix and a suffix, wherein the size of the suffix is dependent on the prefix and the size of the current coding block. By this measure, it is feasible to efficiently adapt the length of the variable-length coded syntax element which controls the bi-partitioning of the current coding block to the actual needs, namely the size, of the current coding block, and the variability of the bi-partitioning by varying the wedglet separation line, respectively. The greater the current coding block is, the longer the variable-length coded syntax element may be. This length dependency may even be sufficiently effective in terms of coding efficiency so that the variable length coded syntax element may be coded without context-adaptive entropy coding, but directly or using fixed-equal-probability binary entropy coding.

公开(公告)号：US10827158B2

公开(公告)日：2020-11-03

申请号：US16868654

申请日：2020-05-07

Applicant: GE VIDEO COMPRESSION LLC

Inventor： Gerhard Tech ,  Karsten Mueller ,  Thomas Wiegand

IPC: H04N13/161 ,  H04N13/122 ,  H04N13/111 ,  H04N13/128 ,  G06T15/20

Abstract: An apparatus for determining a measure for a distortion change of a first view synthesized from a second view, caused by a modification of a depth map of the second view from a first state to a second state, is configured—starting from a current synthesis state of the first view corresponding to a synthesis from the second view having the depth map modified to the second state in an already processed portion of the depth map and having the depth map unmodified at the first state in a yet to be processed portion of the depth map—to compute a possible successor synthesis state corresponding to a synthesis of the first view from the second view having the depth map modified to the second state in an already processed portion plus a currently processed portion and having the depth map unmodified at the first state in the yet to be processed portion without the currently processed portion; and to determine a distortion change of a distortion of the current synthesis state of the first view relative to an undistorted version of the first view to a distortion of the possible successor synthesis state of the first view relative to the undistorted version of the first view.

公开(公告)号：US10771794B2

公开(公告)日：2020-09-08

申请号：US16720054

申请日：2019-12-19

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 ,  H04N19/103 ,  H04N19/157 ,  H04N19/82 ,  H04N19/44 ,  H04N19/23 ,  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.