公开(公告)号：US20230262221A1

公开(公告)日：2023-08-17

申请号：US18302761

申请日：2023-04-18

申请人： HUAWEI TECHNOLOGIES CO., LTD. ,  TSINGHUA UNIVERSITY

发明人： Xiaozhen Zheng ,  Zhen Mao ,  Ziyuan Wang ,  Yun He ,  Xiaozhong Xu ,  Jianhua Zheng

IPC分类号： H04N19/126 ,  H04N19/70 ,  H04N19/61 ,  H04N19/174 ,  H04N19/17 ,  H04N19/436 ,  H04N19/46

CPC分类号： H04N19/126 ,  H04N19/70 ,  H04N19/61 ,  H04N19/174 ,  H04N19/17 ,  H04N19/436 ,  H04N19/46 ,  H04N19/172

摘要： A method and device for coding and decoding are disclosed. The method includes: dividing a picture to be encoded into several slices, each containing macroblocks continuous in a designated scanning sequence in the picture; dividing slices in the picture into one or more slice sets according to attribute information of the slices, each slice set containing one or more slices; and encoding the slices in the slice sets according to slice and slice set division information to get a coded bit stream of the picture. The decoding method includes: obtaining slice and slice set division information from a bit stream to be decoded and decoding the bit stream according to the obtained slice and slice set division information. The invention improves the performance of video transmission effectively and realizes region based coding. The implementation of coding and decoding is simple and the complexity of coding and decoding systems is reduced.

公开(公告)号：US20230247213A1

公开(公告)日：2023-08-03

申请号：US18132032

申请日：2023-04-07

申请人： SHARP KABUSHIKI KAISHA ,  FG Innovation Company Limited

发明人： SACHIN G. DESHPANDE ,  EIICHI SASAKI ,  TAKESHI CHUJOH ,  YUKINOBU YASUGI ,  TOMOHIRO IKAI ,  TOMOKO AONO

IPC分类号： H04N19/436 ,  H04N19/119 ,  H04N19/167 ,  H04N19/174 ,  H04N19/96

CPC分类号： H04N19/436 ,  H04N19/119 ,  H04N19/167 ,  H04N19/174 ,  H04N19/96

摘要： A moving image decoding method is provided for decoding encoded data of a tile group generated by splitting a picture into one or more rectangular regions. The tile group includes one or more segments. The moving image decoding method includes decoding a wavefront parallel processing (WPP) enabled flag indicating whether a rectangular tile or a coding tree unit (CTU) row having a height of one CTU exists in a segment in an object tile group; and decoding an end bit of the segment. When the WPP enabled flag is 1, after decoding a CTU at a right end of the CTU row, an end bit of a first segment having a first fixed value is decoded. When the WPP enabled flag is 0, after decoding a CTU at a bottom right of a tile, an end bit of a second segment having a second fixed value is decoded.

公开(公告)号：US20230247197A1

公开(公告)日：2023-08-03

申请号：US18131470

申请日：2023-04-06

申请人： OL Security Limited Liability Company

发明人： Ujval J. Kapasi ,  Amit Gulati ,  John Sievers ,  Yipeng Liu ,  Dan Miller

IPC分类号： H04N19/115 ,  H04N19/56 ,  H04N19/61 ,  H04N19/43 ,  H04N19/433 ,  H04N19/436 ,  H04N19/53 ,  H04N19/533 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51

CPC分类号： H04N19/115 ,  H04N19/56 ,  H04N19/61 ,  H04N19/43 ,  H04N19/433 ,  H04N19/436 ,  H04N19/53 ,  H04N19/533 ,  H04N19/176 ,  H04N19/46 ,  H04N19/51

摘要： Instructions embedded on a computer-readable medium, when executed on one or more computer devices, improve video coding performance while using a merge mode in motion estimation. The instructions comprise instructions to perform one or more refinement searches on a plurality of candidate regions of a current frame. The instructions also comprise instructions to determine one or more distortion values based, at least in part, on reduced candidate regions and instructions to code motion data based, at least in part, on the one or more refinement searches.

公开(公告)号：US11711536B2

公开(公告)日：2023-07-25

申请号：US17443475

申请日：2021-07-27

申请人： UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

发明人： Gwang Hoon Park ,  Min Seong Lee ,  Young Su Heo ,  Yoon Jin Lee

IPC分类号： H04N19/51 ,  H04N19/597 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70 ,  H04N19/159 ,  H04N19/436

CPC分类号： H04N19/51 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/597 ,  H04N19/70 ,  H04N19/436

摘要： According to the present invention, there is provided A method of encoding a three-dimensional (3D) image, the method comprising: determining a prediction mode for a current block as an inter prediction mode; determining whether a reference block corresponding to the current block in a reference picture has motion information; when the reference block has the motion information, deriving motion information on the current block for each sub prediction block in the current block; and deriving a prediction sample for the current block based on the motion information on the current block.

公开(公告)号：US11700382B1

公开(公告)日：2023-07-11

申请号：US17518543

申请日：2021-11-03

申请人： Meta Platforms, Inc.

发明人： Gaurang Chaudhari ,  Yunqing Chen ,  Harikrishna Madadi Reddy

IPC分类号： H04N19/147 ,  H04N19/436 ,  H04N19/184 ,  H04N19/107

CPC分类号： H04N19/147 ,  H04N19/107 ,  H04N19/184 ,  H04N19/436

摘要： An example disclosed system may include a hardware video encoding pipeline (HVEP), the HVEP that includes a prediction module that generates, using a primary prediction mode, a primary encode of a portion of a video stream, and using a secondary prediction mode, a secondary encode of the portion of the video stream. The HVEP may also include (1) a rate-distortion optimization (RDO) module that determines a primary cost associated with the primary encode and a secondary cost associated with the secondary encode, (2) a quality metric (QM) module that determines a primary QM associated with the primary encode and a secondary QM associated with the secondary encode, and (3) a decision module that selects, for an encoding of the video stream, at least one of the primary prediction mode and the secondary prediction mode based on the primary cost, the secondary cost, the primary QM, and the secondary QM.

公开(公告)号：US11683510B2

公开(公告)日：2023-06-20

申请号：US16868579

申请日：2020-05-07

申请人： Axis AB

发明人： Viktor Edpalm ,  Alexandre Martins

IPC分类号： H04N19/115 ,  H04N19/146 ,  H04N19/184 ,  H04N19/436 ,  H04N19/196 ,  H04L65/611

CPC分类号： H04N19/436 ,  H04N19/115 ,  H04N19/146 ,  H04N19/184 ,  H04N19/196 ,  H04L65/611

摘要： There is provided a method and devices for encoding and streaming a video sequence over a plurality of network connections. A video sequence is encoded (S04) in parallel into a number of encoded video sequences having different video properties. The encoded video sequences are then streamed (S06) in parallel over the plurality of network connections. Each encoded video sequence is streamed over at least one of the plurality of network connections, and, for each network connection, an encoded video sequence having video properties that match desired video properties of the network connection. In response to detecting (S08) that the desired video properties of one of the network connections have changed, the number of encoded video sequences is increased or decreased (S10).

公开(公告)号：US20190246127A1

公开(公告)日：2019-08-08

申请号：US15549326

申请日：2016-12-30

申请人： SHANGHAI CHAI MING HUANG INFORMATION TECHNOLOGY CO., LTD.

发明人： Yukun CHEN ,  Chaiming HUANG ,  Wei TIAN ,  Chenglong YU ,  Huan XU ,  Jiulong BAO

IPC分类号： H04N19/436 ,  H04N19/174 ,  H04N19/46 ,  H04N19/70

CPC分类号： H04N19/436 ,  G02B27/01 ,  G06F3/01 ,  G06T7/10 ,  H04N19/134 ,  H04N19/174 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

摘要： A wireless transmission method and device for virtual reality, a terminal and a head-mounted display device are provided. The method includes: dividing each frame of a plurality of images to be transmitted into a plurality of slices of images; encoding slices of images obtained by the division of the plurality of images successively, to obtain a plurality of slices of encoded images; and respectively transmitting, receiving, decompressing and displaying the plurality of slices of encoded images and audio data. Efficiency of wireless transmission in VR scenes may be effectively improved.

公开(公告)号：US20190246109A1

公开(公告)日：2019-08-08

申请号：US16386207

申请日：2019-04-16

申请人： Dolby Laboratories Licensing Corporation

发明人： Athanasios LEONTARIS ,  Alexandros TOURAPIS

IPC分类号： H04N19/146 ,  H04N19/436 ,  H04N19/192 ,  H04N19/177 ,  H04N19/102 ,  H04N19/115 ,  H04N19/154 ,  H04N19/14

CPC分类号： H04N19/146 ,  H04N19/102 ,  H04N19/115 ,  H04N19/14 ,  H04N19/154 ,  H04N19/177 ,  H04N19/192 ,  H04N19/436

摘要： Rate control techniques are provided for encoding an input video sequence into a compressed coded bitstream with multiple coding passes. The final coding pass may comprise final splices with non-overlapping frames that do not extend into neighboring final splices. A final splice in the final coding pass may correspond to at least one non-final splice in a non-final coding pass. A non-final splice may have overlapping frames that extend into neighboring final splices in the final coding pass. The overlapping frames in the non-final splice may be used to derive complexity information about the neighboring final splices. The complexity information about the neighboring final splices, as derived from the overlapping frames, may be used to allocate or improve rate control related budgets in encoding the final splice into the compressed coded bitstream in the final coding pass.

公开(公告)号：US20190007693A1

公开(公告)日：2019-01-03

申请号：US15745267

申请日：2016-09-13

申请人： CHUANXIAN NETWORK TECHNOLOGY (SHANGHAI) CO., LTD)

发明人： Tao Wang ,  Jinje Ke ,  Sibin GU ,  Baiyu PAN ,  Ji WANG

IPC分类号： H04N19/436 ,  H04N19/513

CPC分类号： H04N19/436 ,  H04N19/513 ,  H04N19/523 ,  H04N19/533

摘要： The present disclosure relates to a motion compensation matching method and system for video coding. The method comprises: a CPU extracting a current frame image and a reference frame image from a video to be processed and sending the extracted frame images to a GPU; the GPU performing interpolation process at least once on the reference frame image to obtain a plurality of interpolation images; the GPU dividing the current frame image to obtain a plurality of prediction blocks; the GPU, according to each of the prediction blocks, performing block matching search in the reference frame image and each of the interpolation images; according to a result of the block matching search, determining a motion vector of a desired image block of the current frame image. The present disclosure uses GPU to execute large amounts of computation for interpolation and division of the frame images and block matching search, and uses CPU to process a small amount of computation. Since GPU is used to process search, which can be the most complicated and the most energy-consuming part of the coding process, the large-scale concurrency of the graphics card can be sufficiently utilized, and thus the video coding speed can be significantly increased.

公开(公告)号：US20180324446A1

公开(公告)日：2018-11-08

申请号：US15773216

申请日：2016-11-09

申请人： NEC CORPORATION

发明人： Tatsuji MORIYOSHI

IPC分类号： H04N19/423 ,  H04N19/176

CPC分类号： H04N19/423 ,  H04N19/124 ,  H04N19/176 ,  H04N19/184 ,  H04N19/426 ,  H04N19/436 ,  H04N19/60

摘要： Provided is an information compression device or the like which is capable of compressing information required for encoding processing to a smaller size. The information compression device calculates a number of non-zero blocks having a value equal or greater than a predetermined value, determine a position for storing the non-zero blocks in a memory, and store only the non-zero blocks to a memory area in accordance with the determined position.