公开(公告)号：US20220078426A1

公开(公告)日：2022-03-10

申请号：US17526529

申请日：2021-11-15

申请人： Velos Media, LLC

发明人： Junichi TANAKA

IPC分类号： H04N19/124 ,  H04N19/70 ,  H04N19/463 ,  H04N19/174 ,  H04N19/103 ,  H04N19/126 ,  H04N19/157 ,  H04N19/31 ,  H04N19/50 ,  H04N19/44

摘要： An image processing device including an acquiring section configured to acquire quantization matrix parameters from an encoded stream in which the quantization matrix parameters defining a quantization matrix are set within a parameter set which is different from a sequence parameter set and a picture parameter set, a setting section configured to set, based on the quantization matrix parameters acquired by the acquiring section, a quantization matrix which is used when inversely quantizing data decoded from the encoded stream, and an inverse quantization section configured to inversely quantize the data decoded from the encoded stream using the quantization matrix set by the setting section.

公开(公告)号：US11272210B2

公开(公告)日：2022-03-08

申请号：US17102218

申请日：2020-11-23

申请人： Velos Media, LLC

发明人： Gergely Ferenc Korodi ,  Jinwen Zan ,  Dake He

IPC分类号： H04N11/02 ,  H04N19/60 ,  H04N19/13 ,  H04N19/625 ,  H04N19/18 ,  H04N19/169 ,  H04N19/136 ,  H04N19/44 ,  H04N19/91

摘要： Methods of encoding and decoding for video data are describe in which significance maps are encoded and decoded using non-spatially-uniform partitioning of the map into parts, wherein the bit positions within each part are associated with a given context. Example partition sets and processes for selecting from amongst predetermined partition sets and communicating the selection to the decoder are described.

公开(公告)号：US11228784B2

公开(公告)日：2022-01-18

申请号：US16668975

申请日：2019-10-30

申请人： Velos Media, LLC

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

IPC分类号： H04N7/12 ,  H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/70 ,  H04N19/61 ,  H04N19/463 ,  H04N19/65 ,  H04N19/577

摘要： An image coding method bitstream includes: determining a maximum number of a merging candidate which is a combination of a prediction direction, a motion vector, and a reference picture index for use in coding of a current block; deriving a first merging candidate; determining whether or not a total number of the first merging candidate is smaller than the maximum number; deriving a second merging candidate when it is determined that the total number of the first merging candidate is smaller than the maximum number; selecting a merging candidate for use in the coding of the current block from the first merging candidate and the second merging candidate; and coding, using the maximum number, an index for identifying the selected merging candidate, and attaching the coded index to the bitstream.

公开(公告)号：US20210344963A1

公开(公告)日：2021-11-04

申请号：US17320514

申请日：2021-05-14

申请人： Velos Media, LLC

发明人： Peisong CHEN ,  Marta KARCZEWICZ ,  Yan YE

IPC分类号： H04N19/70 ,  H04N19/147 ,  H04N19/176 ,  H04N19/61 ,  H04N19/103 ,  H04N19/593 ,  H04N19/96 ,  H04N19/46 ,  H04N19/44

摘要： Technology is described for decoding a video block. A block-type syntax information is received which indicates a size of a video block in a video frame, wherein a maximum size of the video blocks is 32×32 or 64×64. The video block having the size indicated by the block-type syntax information is received. The video block is partitioned into partitions, and at least one of the partitions is encoded with a first encoding mode and at least one other of the partitions is encoded with a second encoding mode which is different from the first encoding mode. Syntax information is received for the partitions of the video block and for the first encoding mode and the second encoding mode. Motion vector information is received for one or more of the partitions. The video block is decoded based on at least the block-type syntax information and the motion vector information.

公开(公告)号：US11076160B2

公开(公告)日：2021-07-27

申请号：US16796054

申请日：2020-02-20

申请人： Velos Media, LLC

发明人： Sachin G. Deshpande ,  Louis Joseph Kerofsky

IPC分类号： H04N19/159 ,  H04N19/70 ,  H04N19/46 ,  H04N19/573 ,  H04N19/68 ,  H04N19/124 ,  H04N19/174 ,  H04N19/51 ,  H04N19/593 ,  H04N19/91

摘要： An instantaneous decoder refresh, IDR, picture is encoded. The IDR picture occurs at a random access point in a bitstream of data, includes only intra-prediction slices, I-slices, and does not refer to any picture or pictures other than itself for prediction. When the IDR picture has a subsequent leading picture, a first Network Access Layer, NAL, unit type of the IDR picture is generated indicating that the IDR picture has a subsequent leading picture, and the first NAL unit type is encoded. When the IDR picture does not have a subsequent leading picture, a second Network Access Layer, NAL, unit type of the IDR picture is generated indicating that the IDR picture does not have a subsequent leading picture, the second NAL unit type being different from the first NAL unit type, and the second NAL unit type is encoded. The subsequent leading picture follows the IDR picture in the encoding order and precedes the IDR picture in a display order, and the subsequent leading picture is encoded without inter-prediction from any picture that precedes the IDR picture in the encoding order.

公开(公告)号：US20210203976A1

公开(公告)日：2021-07-01

申请号：US17202259

申请日：2021-03-15

申请人： Velos Media, LLC

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

IPC分类号： H04N19/513 ,  H04N19/56 ,  H04N19/105 ,  H04N19/52 ,  H04N19/107

摘要： A decoding method and apparatus are provided. A first candidate having a first motion vector that has been used to decode a first block, a first prediction direction that corresponds to the first motion vector, and a first reference picture index that identifies a first reference picture is derived. A second candidate having a second motion vector that has been used to decode a second block, a second prediction direction that corresponds to the second motion vector, and a second reference picture index that identifies a second reference picture is derived. When a total number of candidates is less than a maximum number, a third candidate is derived by combining the first motion vector and the first reference picture index for the first prediction direction of the first candidate and the second motion vector and the second reference picture index for the second prediction direction of the second candidate.

公开(公告)号：US20210203938A1

公开(公告)日：2021-07-01

申请号：US17202269

申请日：2021-03-15

申请人： Velos Media, LLC

发明人： Jonatan Samuelsson ,  Rickard Sjoberg

IPC分类号： H04N19/13 ,  H04N19/70 ,  H04N19/174 ,  H04N19/46

摘要： A length indicator associated with an encoded representation of a slice is parsed. The length indicator is indicative of a length of an extension field present in a slice header of the encoded representation. A decoder can then determine to ignore, during decoding of the encoded representation, any value of the extension field in the slice header where these values are identified based on the length indicator. As a consequence, an extension field can be added to slice headers and still enable legacy decoders to correctly decode the encoded representations.

公开(公告)号：US10951911B2

公开(公告)日：2021-03-16

申请号：US16553110

申请日：2019-08-27

申请人： Velos Media, LLC

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

IPC分类号： H04N7/12 ,  H04N19/513 ,  H04N19/56 ,  H04N19/105 ,  H04N19/52 ,  H04N19/107 ,  H04N19/503

摘要： A decoding method and apparatus are provided. A first candidate having a first motion vector that has been used to decode a first block, a first prediction direction that corresponds to the first motion vector, and a first reference picture index that identifies a first reference picture is derived. A second candidate having a second motion vector that has been used to decode a second block, a second prediction direction that corresponds to the second motion vector, and a second reference picture index that identifies a second reference picture is derived. When a total number of candidates is less than a maximum number, a third candidate is derived by combining the first motion vector and the first reference picture index for the first prediction direction of the first candidate and the second motion vector and the second reference picture index for the second prediction direction of the second candidate.

公开(公告)号：US10771816B2

公开(公告)日：2020-09-08

申请号：US16544858

申请日：2019-08-19

申请人： Velos Media, LLC

发明人： Christopher A. Segall

IPC分类号： H04N19/61 ,  H04N19/513

摘要： A method for decoding video includes creating a first list of motion vectors from at least one neighboring block in a current frame of the video and creating a second list of motion vectors from at least one previous block in a temporally earlier frame of the video. A third list of motion vectors is created based upon the first list and the second list. Based upon receiving a motion vector competition control parameter selecting one of the motion vectors from the third list, wherein the second list of motion vectors is further based upon a flooring function.

公开(公告)号：US10743010B2

公开(公告)日：2020-08-11

申请号：US15970185

申请日：2018-05-03

申请人： Velos Media, LLC

发明人： Semih Esenlik ,  Matthias Narroschke ,  Thomas Wedi

IPC分类号： H04N19/436 ,  H04N19/597 ,  H04N19/176 ,  H04N19/61 ,  H04N19/174 ,  H04N13/189 ,  H04N19/46 ,  H04N19/44 ,  H04N19/119 ,  H04N19/13 ,  H04N19/167 ,  H04N19/184

摘要： A bitstream, including a coded signal resulting from coding slices of an image, is decoded. Each slice includes plural largest coding units (LCUs). A slice is either a normal slice having a slice header with information useable for another slice or a dependent slice having an associated normal slice which is decoded using information included in a slice header of the associated normal slice. The image includes plural LCU rows, and each LCU row includes two or more LCUs. When decoding a first normal slice in a first LCU row that starts at a position other than a beginning of the first LCU row: (i) the first normal slice and any dependent slices associated with the first normal slice are decoded, and (ii) a second normal slice that starts at the beginning of a second LCU row, immediately following the first LCU row, is decoded.