公开(公告)号：US20220232245A1

公开(公告)日：2022-07-21

申请号：US17715779

申请日：2022-04-07

申请人： GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP.,LTD.

发明人： Bae Keun LEE

IPC分类号： H04N19/52 ,  H04N19/577

摘要： A video decoding method according to the present disclosure includes the steps of: generating a merge candidate list for a current block; determining a merge candidate for the current block among merge candidates included in the merge candidate list; deriving an offset vector for the current block; and deriving a motion vector for the current block by adding the offset vector to a motion vector of the merge candidate.

公开(公告)号：US20220224912A1

公开(公告)日：2022-07-14

申请号：US17607231

申请日：2020-05-12

申请人： LG Electronics Inc.

发明人： Nae Ri PARK ,  Jung Hak NAM ,  Hyeong Moon JANG ,  Jaehyun LIM ,  Seung Hwan KIM

IPC分类号： H04N19/139 ,  H04N19/176 ,  H04N19/52 ,  H04N19/577 ,  H04N19/105 ,  H04N19/593 ,  H04N19/159

摘要： An image encoding/decoding apparatus and method are provided. An image decoding method performed by an image decoding apparatus according to the present disclosure may comprise deriving a motion shift of a current block using motion information of a neighboring block of the current block, determining a collocated block of the current block using the motion shift, deriving a motion vector for at least one control point (CP) of the determined collocated block, and deriving at least one control point motion vector (CPMV) of the current block using the motion vector for the at least one CP.

公开(公告)号：US20220201291A1

公开(公告)日：2022-06-23

申请号：US17694979

申请日：2022-03-15

申请人： Sun Patent Trust

发明人： Toshiyasu SUGIO ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI

IPC分类号： H04N19/107 ,  H04N19/56 ,  H04N19/105 ,  H04N19/176 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61 ,  H04N19/137 ,  H04N19/567 ,  H04N19/573 ,  H04N19/58 ,  H04N19/577 ,  H04N19/139 ,  H04N19/52 ,  H04N19/124

摘要： An image coding method includes: adding, to a candidate list, a first adjacent motion vector as a candidate for a predicted motion vector to be used for coding the current motion vector; selecting the predicted motion vector from the candidate list; and coding the current motion vector, wherein in the adding, the first adjacent motion vector indicating a position in a first reference picture included in a first reference picture list is added to the candidate list for the current motion vector indicating a position in a second reference picture included in a second reference picture list.

公开(公告)号：US11363292B2

公开(公告)日：2022-06-14

申请号：US16999031

申请日：2020-08-20

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Semih Esenlik ,  Ivan Krasnov ,  Zhijie Zhao ,  Jianle Chen

IPC分类号： H04N11/02 ,  H04N19/563 ,  H04N19/103 ,  H04N19/176 ,  H04N19/57 ,  H04N19/80 ,  H04N19/172 ,  H04N19/513 ,  H04N19/55 ,  H04N19/56 ,  H04N19/577

摘要： The present disclosure relates to motion vector determination using template or bilateral matching and predictor generation based on the motion vector. The template or bilateral matching and/or the predictor generation use interpolation filtering. The interpolation filtering operation accesses integer sample positions within a window, and further uses padded sample values for integer sample positions outside the window, which are based on at least one sample within said window, and uses the accessed integer sample position values as well as the padded sample values to perform the template or bilateral matching and/or predictor generation.

公开(公告)号：US11363253B2

公开(公告)日：2022-06-14

申请号：US16099392

申请日：2017-05-11

申请人： VID SCALE, INC

发明人： Chun-Chi Chen ,  Xiaoyu Xiu ,  Yuwen He ,  Yan Ye

IPC分类号： H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/463 ,  H04N19/96 ,  H04N19/577 ,  H04N19/70 ,  H04N19/573

摘要： Systems and methods are described for video coding using generalized bi-prediction. In an exemplary embodiment, to code a current block of a video in a bitstream, a first reference block is selected from a first reference picture and a second reference block is selected from a second reference picture. Each reference block is associated with a weight, where the weight may be an arbitrary weight ranging, e.g., between 0 and 1. The current block is predicted using a weighted sum of the reference blocks. The weights may be selected from among a plurality of candidate weights. Candidate weights may be signaled in the bitstream or may be derived implicitly based on a template. Candidate weights may be pruned to avoid out-of-range or substantially duplicate candidate weights. Generalized bi-prediction may additionally be used in frame rate up conversion.

公开(公告)号：US11356694B2

公开(公告)日：2022-06-07

申请号：US17230244

申请日：2021-04-14

申请人： Sun Patent Trust

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Hisao Sasai

IPC分类号： H04N19/513 ,  H04N19/56 ,  H04N19/105 ,  H04N19/52 ,  H04N19/503 ,  H04N19/577 ,  H04N19/573 ,  H04N19/70 ,  H04N19/107 ,  H04N19/109

摘要： By the moving picture coding method and the moving picture decoding method, it is possible to improve coding efficiency. The moving picture coding apparatus includes a merge block candidate calculation unit that (i) specifies merge block candidates at merge mode, by using colpic information such as motion vectors and reference picture index values of neighbor blocks of a current block to be coded and a motion vector and the like of a collocated block of the current block which are stored in a colPic memory, and (ii) generates a combined merge block by using the merge block candidates.

公开(公告)号：US20220174314A1

公开(公告)日：2022-06-02

申请号：US17674347

申请日：2022-02-17

申请人： KDDI CORPORATION

发明人： Kyohei UNNO ,  Kei KAWAMURA ,  Sei NAITO

IPC分类号： H04N19/577 ,  H04N19/137 ,  H04N19/64 ,  H04N19/176

摘要： An image decoding device (200) includes: a prediction signal generation unit (241D) configured to determine whether or not an application condition of BDOF processing is satisfied for each block, generate a prediction signal by executing the BDOF processing in a case where it is determined that the application condition is satisfied, and set the application condition based on a weight coefficient in a case where calculation is performed using pixel values of two reference frames or values calculated from the pixel values in the BDOF processing such that the application condition includes a condition on time distances between the two reference frames and a target frame.

公开(公告)号：US20220174292A1

公开(公告)日：2022-06-02

申请号：US17673879

申请日：2022-02-17

申请人： SK TELECOM CO., LTD.

发明人： Jeong-yeon LIM ,  Hyo Song KIM ,  Se-hoon SON ,  Jae-seob SHIN ,  Sun-young LEE

IPC分类号： H04N19/176 ,  H04N19/105 ,  H04N19/577

摘要： Disclosed herein is a method for adaptive bidirectional optical flow estimation for inter prediction compensation during video encoding. The method aims to reduce complexity and/or cost of bidirectional optical flow (BIO) at a pixel level or a subblock level.

公开(公告)号：US20220167006A1

公开(公告)日：2022-05-26

申请号：US17669235

申请日：2022-02-10

申请人： Microsoft Technology Licensing, LLC

发明人： Alexandros Tourapis ,  Shipeng Li ,  Feng Wu

IPC分类号： H04N19/577 ,  H04N19/87 ,  H04N19/107 ,  H04N19/52 ,  H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/51 ,  H04N19/102 ,  H04N19/61 ,  H04N19/593 ,  H04N19/137 ,  H04N19/142 ,  H04N19/573 ,  H04N19/56 ,  H04N19/58

摘要： Several improvements for use with Bidirectionally Predictive (B) pictures within a video sequence are provided. In certain improvements Direct Mode encoding and/or Motion Vector Prediction are enhanced using spatial prediction techniques. In other improvements Motion Vector prediction includes temporal distance and subblock information, for example, for more accurate prediction. Such improvements and other presented herein significantly improve the performance of any applicable video coding system/logic.

公开(公告)号：US20220150531A1

公开(公告)日：2022-05-12

申请号：US17583798

申请日：2022-01-25

申请人： Samsung Electronics Co., Ltd.

发明人： Jin-Young Lee ,  Woong-il Choi

IPC分类号： H04N19/513 ,  H04N19/176 ,  H04N19/577 ,  H04N19/105

摘要： A method of decoding motion information includes: identifying a type of omission motion information not included in a bitstream from among a plurality of pieces of motion information used to decode a current block that is inter predicted; obtaining the omission motion information by using a predetermined method; and decoding the current block based on the plurality of pieces of motion information including the obtained omission motion information.