公开(公告)号：US20220141444A1

公开(公告)日：2022-05-05

申请号：US17579065

申请日：2022-01-19

申请人： B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.

发明人： Ki Baek KIM

IPC分类号： H04N13/161 ,  H04N19/597 ,  H04N19/172 ,  H04N19/167 ,  H04N19/119 ,  H04N19/70 ,  H04N19/124 ,  H04N19/103 ,  H04N19/134 ,  H04N19/176 ,  H04N19/625 ,  H04N19/11 ,  H04N19/105 ,  H04N19/129 ,  H04N19/13

摘要： Disclosed are methods and apparatuses for decoding an image. A method includes receiving a bitstream obtained by encoding the image; dividing a first coding block into a plurality of second coding blocks; generating a prediction block of a second coding block based on syntax information obtained from the bitstream; and reconstructing the second coding block based on the prediction block and a residual block of the second coding block, the residual block being obtained by performing a dequantization and an inverse-transform on quantized transform coefficients from the bitstream. The first coding block has a recursive division structure. The first coding block is divided based on at least one of a quad tree division, a binary tree division or a triple tree division.

公开(公告)号：US20220094934A1

公开(公告)日：2022-03-24

申请号：US17540817

申请日：2021-12-02

申请人： Sun Patent Trust

发明人： Daisaku KOMIYA ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI ,  Toshiyasu SUGIO ,  Kyoko TANIKAWA ,  Toru MATSUNOBU

IPC分类号： H04N19/124 ,  H04N19/46 ,  H04N19/13 ,  H04N19/134 ,  H04N19/436 ,  H04N19/503 ,  H04N19/176 ,  H04N19/70 ,  H04N19/172 ,  H04N19/51 ,  H04N19/60 ,  H04N19/593 ,  H04N19/174 ,  H04N19/17 ,  G06T9/00

摘要： An image decoding apparatus obtain pieces of coded data that is included in a bitstream and generated by coding tiles. Tile boundary independence information is further obtained from the bitstream, with the tile boundary independence information indicating whether each of boundaries between the tiles is one of a first boundary or a second boundary. The pieces of coded data are decoded to generate image data of the tiles. Image data of a first tile is generated by decoding a first code string included in first coded data with reference to decoding information of a decoded tile when the tile boundary independence information indicates the first boundary, and by decoding the first code string without referring to the decoding information of the decoded tile when the tile boundary independence information indicates the second boundary.

公开(公告)号：US20220060621A1

公开(公告)日：2022-02-24

申请号：US17519712

申请日：2021-11-05

申请人： B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.

发明人： Ki Baek KIM

IPC分类号： H04N5/232 ,  G06T3/40 ,  H04N19/176 ,  H04N19/103 ,  H04N19/159 ,  H04N19/13 ,  H04N19/129 ,  H04N19/124 ,  H04N19/134 ,  H04N19/625 ,  H04N19/51 ,  H04N19/119 ,  H04N19/11

摘要： Disclosed is an image data encoding/decoding method and apparatus. A method for decoding a 360-degree image comprises the steps of: receiving a bitstream obtained by encoding a 360-degree image; generating a prediction image by making reference to syntax information obtained from the received bitstream; combining the generated prediction image with a residual image obtained by dequantizing and inverse-transforming the bitstream, so as to obtain a decoded image; and reconstructing the decoded image into a 360-degree image according to a projection format.

公开(公告)号：US20220014789A1

公开(公告)日：2022-01-13

申请号：US17484731

申请日：2021-09-24

申请人： Intellectual Discovery Co., Ltd.

发明人： Ho Chan Ryu ,  Yong Jo Ahn

IPC分类号： H04N19/70 ,  H04N19/176 ,  H04N19/119 ,  H04N19/88 ,  H04N19/46 ,  H04N19/44 ,  H04N19/134 ,  H04N19/169 ,  H04N19/96

摘要： A decoding method comprises the steps of: combining two or more encoding units of maximum size into a single encoding unit group; acquiring encoding data corresponding to the combined single encoding unit group; and decoding, according to a decoding order, the two or more encoding units of maximum size contained in the single encoding unit group. Also disclosed is a block partitioning structure used for encoding and decoding video.

公开(公告)号：US11202005B2

公开(公告)日：2021-12-14

申请号：US17211575

申请日：2021-03-24

申请人： B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.

发明人： Ki Baek Kim

IPC分类号： H04N5/00 ,  H04N19/51 ,  H04N5/232 ,  G06T3/40 ,  H04N19/176 ,  H04N19/103 ,  H04N19/159 ,  H04N19/13 ,  H04N19/129 ,  H04N19/124 ,  H04N19/134 ,  H04N19/625 ,  H04N19/119 ,  H04N19/11

摘要： A method for decoding a 360-degree image includes: receiving a bitstream obtained by encoding a 360-degree image; generating a prediction image by making reference to syntax information obtained from the received bitstream; combining the generated prediction image with a residual image obtained by dequantizing and inverse-transforming the bitstream to obtain a decoded image; and reconstructing the decoded image into a 360-degree image according to a projection format. Generating the prediction image includes: obtaining, from motion information in the syntax information, a motion vector candidate group including a motion vector of a block adjacent to a current block to be decoded; deriving a prediction motion vector from the motion vector candidate group based on selection information extracted from the motion information; and determining a prediction block for the current block to be decoded, using a final motion vector derived by adding the prediction motion vector to a differential motion vector extracted from the motion information.

公开(公告)号：US20210360257A1

公开(公告)日：2021-11-18

申请号：US17389892

申请日：2021-07-30

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 ,  H04N19/105 ,  H04N19/52 ,  H04N19/176 ,  H04N19/70 ,  H04N19/51 ,  H04N19/13 ,  H04N19/134 ,  H04N19/102 ,  H04N19/577

摘要： A moving picture decoding apparatus, method, and medium for decoding a current block are provided. A first candidate is derived from a first motion vector that has been used to decode a first block. The first block is adjacent to the current block. A first index identifying a reference picture to be selected for decoding the current block is decoded. A second candidate having a second motion vector that includes a non-zero value is derived. The non-zero value is assigned to the reference picture. A selected candidate is selected from a plurality of candidates, including the first candidate and the second candidate. A second index identifying the selected candidate is decoded. The current block is decoded using the selected candidate. The second candidate includes the non-zero value of the reference picture, with the reference picture being selected from a plurality of referable reference pictures.

公开(公告)号：US20210344970A1

公开(公告)日：2021-11-04

申请号：US17373525

申请日：2021-07-12

申请人： QUALCOMM Incorporated

发明人： Hsiao-Chiang Chuang ,  Xiang Li ,  Jianle Chen ,  Feng Zou ,  Wei-Jung Chien ,  Yi-Wen Chen ,  Marta Karczewicz

IPC分类号： H04N19/96 ,  H04N19/119 ,  H04N19/463 ,  H04N19/134 ,  H04N19/176 ,  H04N19/593

摘要： An example device includes a memory to store the video data, and processing circuitry in communication with the memory. The processing circuitry is configured to compare a value of a dimension of a current block of the stored video data to a value of a corresponding dimension of a neighboring block of the current block to obtain a relative dimension value. The processing circuitry is further configured to determine, based on the relative dimension value, that the current block is to be partitioned according to a prediction tree (PT) portion of a multi-type tree-based partitioning scheme. The PT portion comprises partitioning according to one of a binary tree structure or a center-side triple tree structure. The processing circuitry is further configured to partition, based on the determination, the current block according to the PT portion, to form a plurality of sub-blocks.

公开(公告)号：US20210289196A1

公开(公告)日：2021-09-16

申请号：US17303438

申请日：2021-05-28

申请人： SONY GROUP CORPORATION

发明人： OHJI NAKAGAMI

IPC分类号： H04N19/105 ,  H04N19/70 ,  H04N19/51 ,  H04N19/593 ,  H04N19/174 ,  H04N19/134

摘要： An image encoding device and a method, and an image decoding device and a method that are designed to improve encoding efficiency in IntraBC. A screen is divided into four slices (Slices # 0 through # 3). In a case where reference to a different slice is prohibited, the range that can be referred to from the current CTU in Slice # 2 is only the decoded portion in Slice # 2, and therefore, any block in Slice # 1 cannot be referred to, for example. In the case of the present technology, on the other hand, decoded different slices (Slice # 0 and Slice # 1)are included in the referable range, and accordingly, a block in Slice # 1 can be referred to from the current CTU in Slice # 2.

公开(公告)号：US20210274183A1

公开(公告)日：2021-09-02

申请号：US17307140

申请日：2021-05-04

申请人： Google LLC

发明人： Jaakko Tuomas Aleksi Ventelae

IPC分类号： H04N19/13 ,  H04N19/18 ,  H04N19/136 ,  H04N19/129 ,  H04N19/134 ,  H04N19/423

摘要： An apparatus for decoding a current block in a scan order identifies a current entropy coded transform coefficient from the current block; determines, based on the scan order and using a scan order distance table, a first scan order distance that is a difference between a first scan order location corresponding to the current entropy coded transform coefficient and a second scan order location corresponding to a first context coefficient; identifies, using the first scan order distance, a first location into a context coefficient register; identifies, at the first location of the context coefficient register, a first context coefficient value; identifies a probability distribution using at least the first context coefficient value; entropy decodes the current entropy coded transform coefficient using the probability distribution to obtain an entropy decoded current transform coefficient; and includes the entropy decoded current transform coefficient in an output bitstream.

公开(公告)号：US11082473B1

公开(公告)日：2021-08-03

申请号：US16819167

申请日：2020-03-15

申请人： TFI Digital Media Limited

发明人： Yiu Fai Yuen ,  Chi Keung Fong ,  Wing Chuen Cheng ,  Ho Ting Lee ,  Hon Wah Wong

IPC分类号： H04L29/06 ,  H04N19/134

摘要： A method for video coding with coding parameter reuse is provided as follows. A first video encoding process is executed with respect to a first video source for generating a first video stream by a first video encoder. First coding parameters are exported during the first video encoding process by the first video encoder. The first coding parameters are processed to generate second coding parameters by a parameter processor. A second video encoding process is executed with respect to a second video source for generating a second video stream by a second video encoder. The first and second video sources have different dynamic ranges from each other, and the second coding parameters are introduced into the second video encoding process.