公开(公告)号：US11184631B2

公开(公告)日：2021-11-23

申请号：US16902483

申请日：2020-06-16

申请人： SONY CORPORATION

发明人： Ehsan Maani ,  Ali J Tabatabai ,  Jun Xu

IPC分类号： H04N19/44 ,  H04N19/117 ,  H04N19/82 ,  H04N19/61 ,  H04N19/176 ,  H04N19/14 ,  H04N19/86 ,  H04N19/50 ,  H04N19/96

摘要： A Flexible Band Offset (FBO) apparatus and method of performing Sample Adaptive Offset (SAO) filtering within encoders and decoders, such as according to the High Efficiency Video Coding (HEVC) standard, and similarly configured coding devices. The number of Band Offset (BO) modes and the number of necessary offsets is reduced. The invention beneficially provides simpler coding, reduces temporary buffer size requirements, and can yield a small performance gain over existing SAO techniques of HEVC test model HM 5.

公开(公告)号：US11044488B2

公开(公告)日：2021-06-22

申请号：US16842257

申请日：2020-04-07

申请人： SONY CORPORATION

发明人： Ehsan Maani ,  Ali J Tabatabai ,  Jun Xu

IPC分类号： H04N19/176 ,  H04N19/117 ,  H04N19/82 ,  H04N19/14 ,  H04N19/86 ,  H04N19/50 ,  H04N19/61 ,  H04N19/96 ,  H04N19/44

摘要： A Flexible Band Offset (FBO) apparatus and method of performing Sample Adaptive Offset (SAO) filtering within encoders and decoders, such as according to the High Efficiency Video Coding (HEVC) standard, and similarly configured coding devices. The number of Band Offset (BO) modes and the number of necessary offsets is reduced. The invention beneficially provides simpler coding, reduces temporary buffer size requirements, and can yield a small performance gain over existing SAO techniques of HEVC test model HM 5.

公开(公告)号：US11032561B2

公开(公告)日：2021-06-08

申请号：US16842176

申请日：2020-04-07

申请人： SONY CORPORATION

发明人： Ehsan Maani ,  Ali J Tabatabai ,  Jun Xu

IPC分类号： H04N19/176 ,  H04N19/117 ,  H04N19/82 ,  H04N19/14 ,  H04N19/86 ,  H04N19/50 ,  H04N19/61 ,  H04N19/96 ,  H04N19/44

摘要： A Flexible Band Offset (FBO) apparatus and method of performing Sample Adaptive Offset (SAO) filtering within encoders and decoders, such as according to the High Efficiency Video Coding (HEVC) standard, and similarly configured coding devices. The number of Band Offset (BO) modes and the number of necessary offsets is reduced. The invention beneficially provides simpler coding, reduces temporary buffer size requirements, and can yield a small performance gain over existing SAO techniques of HEVC test model HM 5.

公开(公告)号：US10917642B2

公开(公告)日：2021-02-09

申请号：US16246006

申请日：2019-01-11

申请人： SONY CORPORATION

发明人： Ali J Tabatabai ,  Jun Xu

IPC分类号： H04N19/13 ,  H04N19/60 ,  H04N19/176 ,  H04N19/159 ,  H04N19/129 ,  H04N19/136 ,  H04N19/18

摘要： Coefficient coding for transform units (TUs) during high efficiency video coding (HEVC), and similar standards, toward simplifying design while enhancing efficiency. Elements of the invention include coefficient coding for TUs with up-right diagonal scans being modified, and selectively applying multi-level significance map coding.

公开(公告)号：US10750197B2

公开(公告)日：2020-08-18

申请号：US16503763

申请日：2019-07-05

申请人： SONY CORPORATION

发明人： Ali Tabatabai ,  Jun Xu

IPC分类号： H04N19/46 ,  H04N19/82 ,  H04N19/91

摘要： An encoder/decoder is described using enhanced signaling mechanisms SAO parameters. The various parameters are signaled in various ways according to different embodiments of the invention. In a first embodiment (embodiment A), SAO on/off is decoupled form SAO type coding, with SAO on/off flags being jointly encoded for all color components. The second embodiment (embodiment B), is similar to embodiment A, but modified for application to JCTVC-J0268. In a third embodiment separate signaling is provided for SAO on/off, SAO types BO and EO, and for BO and EO side information (classes or band position). Each of these enhanced SAO signaling mechanisms provide enhanced coding efficiency.

公开(公告)号：US10721486B2

公开(公告)日：2020-07-21

申请号：US15954956

申请日：2018-04-17

申请人： SONY CORPORATION

发明人： Ehsan Maani ,  Ali Tabatabai ,  Jun Xu

IPC分类号： H04N19/176 ,  H04N19/44 ,  H04N19/117 ,  H04N19/14 ,  H04N19/82 ,  H04N19/86 ,  H04N19/50 ,  H04N19/61 ,  H04N19/96

摘要： A Flexible Band Offset (FBO) apparatus and method of performing Sample Adaptive Offset (SAO) filtering within encoders and decoders, such as according to the High Efficiency Video Coding (HEVC) standard, and similarly configured coding devices. The number of Band Offset (BO) modes and the number of necessary offsets is reduced. The invention beneficially provides simpler coding, reduces temporary buffer size requirements, and can yield a small performance gain over existing SAO techniques of HEVC test model HM 5.

公开(公告)号：US10536698B2

公开(公告)日：2020-01-14

申请号：US16111961

申请日：2018-08-24

申请人： SONY CORPORATION

发明人： Jun Xu ,  Kazushi Sato ,  Ehsan Maani

IPC分类号： H04N7/26 ,  H04N19/186 ,  H04N19/124 ,  H04N19/176 ,  H04N19/147 ,  H04N19/61 ,  H04N19/70 ,  H04N19/149 ,  H04N19/126 ,  H04N19/174 ,  H04N19/13 ,  H04N19/159 ,  H04N19/80 ,  H04N19/436 ,  H04N19/172

摘要： The quantization parameters (QP) for Chroma are extended up to and more preferably to the same range as Luma QP (e.g., 0 to 51). Previous, values of Chroma QP only extended up to 39. Techniques are provided for determining extended Chroma QP values (e.g., for Cr and Cb) based on the Luma QP and picture level chroma offsets. In one preferred embodiment, slice level offsets are added making the method particularly well-suited for slice level parallel processing. The extension of Chroma QP enhances functionality, flexibility and friendliness of the High Efficiency Video Coding (HEVC) standard for various applications.

公开(公告)号：US10419776B2

公开(公告)日：2019-09-17

申请号：US14325610

申请日：2014-07-08

申请人： SONY CORPORATION

发明人： Jun Xu ,  Ali Tabatabai

IPC分类号： H04N19/503 ,  H04N19/70 ,  H04N19/30 ,  H04N19/174 ,  H04N19/105 ,  H04N19/52 ,  H04N19/172 ,  H04N19/463 ,  H04N19/187 ,  H04N19/573 ,  H04N19/58

摘要： Syntax changes for SHVC/MV-HEVC coding apparatus and methods are described which improve efficiency. In a first portion, syntax of header signaling position under P or B-slice conditions are described, and a new condition to signal inter-layer prediction layer. A second portion describes use of an inter-layer reference picture set as an alternative to the first portion, and provides an arranged syntax to more efficiently signal inter-layer reference information. In a third portion, an inter-layer sample only prediction and TMVP interaction is described which reduces signaling needs for collocated references syntax.

公开(公告)号：US10390024B2

公开(公告)日：2019-08-20

申请号：US14760457

申请日：2014-04-08

申请人： SONY CORPORATION ,  Cheung Auyeung ,  Jun Xu ,  Ohji Nakagami ,  Ali Tabatabai

发明人： Cheung Auyeung ,  Jun Xu ,  Ohji Nakagami ,  Ali Tabatabai

IPC分类号： H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/167 ,  H04N19/187 ,  H04N19/36 ,  H04N19/70 ,  H04N19/115 ,  H04N19/463 ,  H04N19/174 ,  H04N19/33

摘要： Region of Interest (ROI) scalability with SHVC is able to be implemented where scalability is used for part of a picture but not the whole picture. Applications of ROI scalability include traffic monitoring, security monitoring and tiled streaming.

公开(公告)号：US10230992B2

公开(公告)日：2019-03-12

申请号：US14635176

申请日：2015-03-02

申请人： SONY CORPORATION

发明人： Jun Xu ,  Ali Tabatabai ,  Ohji Nakagami ,  Teruhiko Suzuki

IPC分类号： H04N19/86 ,  H04N19/157 ,  H04N19/186 ,  H04N19/117 ,  H04N19/179

摘要： Based on conditions or restrictions, Strong Intra Smoothing (SIS) is enabled or disabled. SIS is not allowed for chroma when the chroma format is 444, and SIS is not allowed for chroma when the chroma format is 422 or 444.