公开(公告)号：US20240155157A1

公开(公告)日：2024-05-09

申请号：US18549099

申请日：2022-03-04

申请人： LG Electronics Inc.

发明人： Yousun PARK ,  Hyejung HUR ,  Hyunmook OH ,  Sooyeon LEE

IPC分类号： H04N19/597 ,  G06T9/40 ,  H04N19/124 ,  H04N19/132 ,  H04N19/136 ,  H04N19/184 ,  H04N19/96

CPC分类号： H04N19/597 ,  G06T9/40 ,  H04N19/132 ,  H04N19/136 ,  H04N19/184 ,  H04N19/96 ,  H04N19/124

摘要： A point cloud data transmission method according to embodiments may comprise the steps of: encoding geometry information including the positions of points of the point cloud data; encoding, on the basis of the geometry information, attribute information about the points of the point cloud data; and transmitting the encoded geometry information, the encoded attribute information and signaling information.

公开(公告)号：US20240155146A1

公开(公告)日：2024-05-09

申请号：US18490269

申请日：2023-10-19

申请人： Axis AB

发明人： Stefan LUNDBERG ,  Björn VÖLCKER

IPC分类号： H04N19/46 ,  H04N19/136 ,  H04N19/184 ,  H04N19/40

CPC分类号： H04N19/46 ,  H04N19/136 ,  H04N19/184 ,  H04N19/40

摘要： A method for providing a signed video bitstream suitable for transcoding from a first video format into a second video format, the method comprising: obtaining first video data in a lossy first video format; reconstructing a video sequence from the first video data; encoding the reconstructed video sequence as second video data in a second video format; computing first fingerprints of the first video data and second fingerprints of the second video data; deriving a first bitstring from the first fingerprints and a second bitstring from the second fingerprints; and providing a signed video bitstream, which includes the first video data and signature units, each signature unit including a first digital signature of the derived first bitstring and second digital signature of the derived second bitstring.

公开(公告)号：US11979606B2

公开(公告)日：2024-05-07

申请号：US17495301

申请日：2021-10-06

申请人： TENCENT AMERICA LLC

发明人： Xiang Zhang ,  Wen Gao ,  Shan Liu ,  Weiwei Feng ,  Bing Jian

IPC分类号： H04N19/597 ,  G06T15/04 ,  H04N19/184

CPC分类号： H04N19/597 ,  G06T15/04 ,  H04N19/184 ,  G06T2210/56

摘要： Methods and apparatuses of encoding a video stream using video point cloud coding include obtaining a source point cloud; generating a geometry map and a texture map based on the source point cloud; generating a reconstructed geometry map and a reconstructed texture map using lossy coding without using recoloring, wherein a resolution of the reconstructed geometry map is same as a resolution of the reconstructed texture map; obtaining a point of the source point cloud corresponding to a geometry pixel of the geometry map and a texture pixel of the texture map; selecting a color of the texture pixel based on a color of the obtained point; and generating an encoded video stream based on the selected color, the geometry map, and the texture map.

公开(公告)号：US11979605B2

公开(公告)日：2024-05-07

申请号：US17200418

申请日：2021-03-12

申请人： Huawei Technologies Co., Ltd.

发明人： Ye-Kui Wang ,  Fnu Hendry ,  Vladyslav Zakharchenko

IPC分类号： H04N19/597 ,  G06T9/00 ,  H04N19/172 ,  H04N19/184 ,  H04N19/46 ,  H04N19/70

CPC分类号： H04N19/597 ,  G06T9/00 ,  H04N19/172 ,  H04N19/184 ,  H04N19/46 ,  H04N19/70

摘要： A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a plurality of coded sequences of point cloud coding (PCC) frames. The plurality of coded sequences of PCC frames represent a plurality of PCC attributes including geometry, texture, and one or more of reflectance, transparency, and normal. Each coded PCC frame is represented by one or more PCC network abstraction layer (NAL) units.
The mechanism also includes parsing the bitstream to obtain, for each PCC attribute, an indication of one of a plurality of video codecs used to code the corresponding PCC attribute. The mechanism also includes decoding the bitstream based on the indicated video codecs for the PCC attributes.

公开(公告)号：US11979582B2

公开(公告)日：2024-05-07

申请号：US18086228

申请日：2022-12-21

申请人： Sun Patent Trust

发明人： Toshiyasu Sugio ,  Takahiro Nishi ,  Youji Shibahara ,  Kyoko Tanikawa ,  Hisao Sasai ,  Toru Matsunobu

IPC分类号： H04N19/139 ,  H04N19/102 ,  H04N19/105 ,  H04N19/13 ,  H04N19/134 ,  H04N19/176 ,  H04N19/184 ,  H04N19/196 ,  H04N19/51 ,  H04N19/52 ,  H04N19/577 ,  H04N19/70

CPC分类号： H04N19/139 ,  H04N19/102 ,  H04N19/105 ,  H04N19/13 ,  H04N19/134 ,  H04N19/176 ,  H04N19/51 ,  H04N19/52 ,  H04N19/577 ,  H04N19/70 ,  H04N19/184 ,  H04N19/197

摘要： A method for transmitting a bitstream via a network is provided. The bitstream is for coding a current block and is generated by: deriving a first candidate from a first motion vector that has been used to code a first block; coding a first index identifying a reference picture to be used for coding the current block; deriving a second candidate having a second motion vector that includes a non-zero value, which is assigned to the reference picture; and coding a second index identifying a selected candidate to be used for coding the current block. The second motion vector is not derived by coding a block adjacent to the current block, and the non-zero value is assigned by offset values which include an OffsetX and an OffsetY and which are located in a picture header.

公开(公告)号：US11979574B2

公开(公告)日：2024-05-07

申请号：US17964507

申请日：2022-10-12

申请人： Hyundai Motor Company ,  Kia Corporation ,  Ewha University-Industry Collaboration Foundation

发明人： Je Won Kang ,  Sang Hyo Park ,  Seung Wook Park ,  Wha Pyeong Lim

IPC分类号： H04N19/127 ,  H04N19/103 ,  H04N19/13 ,  H04N19/132 ,  H04N19/136 ,  H04N19/184 ,  H04N19/186 ,  H04N19/187

CPC分类号： H04N19/127 ,  H04N19/103 ,  H04N19/13 ,  H04N19/132 ,  H04N19/136 ,  H04N19/184 ,  H04N19/186 ,  H04N19/187

摘要： A method and device for controlling coding tools are provided. The video decoding method includes decoding, from a high level of a bitstream, an enable flag indicating whether one or more coding tools are enabled. The coding tools includes a first coding tool that encodes sample values using luma component mapping based on a piecewise linear model. The method includes acquiring a value of an application flag depending on a value of the enable flag, by setting the application flag indicating whether to apply the coding tools to a predetermined value, or by decoding the application flag from a low level of the bitstream, the application flag including a first application flag indicating whether to apply the first coding tool. The coding tools are operated when the value of the application flag is a value indicating that the coding tools are applied.

公开(公告)号：US20240146954A1

公开(公告)日：2024-05-02

申请号：US18363057

申请日：2023-08-01

申请人： GE VIDEO COMPRESSION, LLC

发明人： Heiko SCHWARZ ,  Heiner KIRCHHOFFER ,  Philipp HELLE ,  Simon OUDIN ,  Jan STEGEMANN ,  Benjamin BROSS ,  Detlev MARPE ,  Thomas WIEGAND

IPC分类号： H04N19/52 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/50 ,  H04N19/70

CPC分类号： H04N19/52 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/50 ,  H04N19/70

摘要： A coding efficiency increase is achieved by using a common signalization within the bitstream with regard to activation of merging and activation of the skip mode. One possible state of one or more syntax elements within the bitstream may signalize for a current sample set of a picture that the sample set is to be merged and has no prediction residual encoded and inserted into the bitstream. A common flag may signalize whether the coding parameters associated with a current sample set are to be set according to a merge candidate or to be retrieved from the bitstream, and whether the current sample set of the picture is to be reconstructed based on a prediction signal depending on the coding parameters associated with the current sample set, without any residual data, or to be reconstructed by refining the prediction signal depending on the coding parameters associated with the current sample set by means of residual data within the bitstream.

公开(公告)号：US20240146953A1

公开(公告)日：2024-05-02

申请号：US18393911

申请日：2023-12-22

申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

发明人： Gun BANG ,  Hui Yong KIM ,  Gwang Hoon PARK ,  Woo Woen GWUN ,  Tae Hyun KIM ,  Won Jun LEE

IPC分类号： H04N19/517 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184

CPC分类号： H04N19/517 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184

摘要： There is provided a method of decoding an image, the method comprising: decoding information for motion information prediction of a current block from a bitstream, predicting motion information of the current block based on the information, refining motion information of the current block by using the decoded information and the predicted motion information of the current block and reconstructing the current block based on the refined motion information of the current block.

公开(公告)号：US11973956B2

公开(公告)日：2024-04-30

申请号：US18107357

申请日：2023-02-08

申请人： DISH Technologies L.L.C.

发明人： Christopher Day ,  Rima Shah

IPC分类号： H04N19/136 ,  G06V10/44 ,  G06V20/40 ,  G06V30/194 ,  H04N19/103 ,  H04N19/132 ,  H04N19/14 ,  H04N19/177 ,  H04N19/184 ,  H04N19/196 ,  H04N19/40 ,  G06F16/783

CPC分类号： H04N19/136 ,  G06V10/44 ,  G06V20/42 ,  G06V30/194 ,  H04N19/103 ,  H04N19/132 ,  H04N19/14 ,  H04N19/177 ,  H04N19/184 ,  H04N19/196 ,  H04N19/40 ,  G06F16/783

摘要： Systems and methods for enhanced video encoding identify patterns in sequences of raw digital video frames to extract features and identify the type of content represented by the extracted features. The system simulates many outcomes of encoding the sequence of digital video frames by using various different encoding strategies to find the relative best encoding strategy for each sequence of frames. As the encoder processes video, it passes digital video frames to a modeling system which determines whether the video, or video having that same type of content, has been previously observed by the system. The system then selectively applies a saved encoding strategy that had been determined by the system to be particularly suitable for encoding the same sequence of video frames or that same type of content.

公开(公告)号：US11973955B2

公开(公告)日：2024-04-30

申请号：US17787219

申请日：2020-12-18

申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

发明人： Yago Sánchez De La Fuente ,  Karsten Sühring ,  Cornelius Hellge ,  Thomas Schierl ,  Robert Skupin ,  Thomas Wiegand

IPC分类号： H04N19/00 ,  H04N19/136 ,  H04N19/174 ,  H04N19/184 ,  H04N19/46

CPC分类号： H04N19/136 ,  H04N19/174 ,  H04N19/184 ,  H04N19/46

摘要： Concepts are described, including encoding, processing and decoding of a data stream having a video encoded thereinto, wherein the video comprises a plurality of pictures, wherein the data stream comprises a plurality of pictures in at least two layers, wherein the pictures of at least one layer are split into a predetermined layer-specific number of subpictures, one or more of the pictures or subpictures of one layer corresponds to one picture or subpictures in one or more other layer, and at least one of the subpictures comprises boundaries for boundary extension for motion compensation, and an indication that at least one of the boundaries of corresponding subpictures or corresponding pictures in different layers are aligned with each other.