公开(公告)号：US20250063209A1

公开(公告)日：2025-02-20

申请号：US18938907

申请日：2024-11-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Vivienne Sze ,  Madhukar Budagavi ,  Woo-Shik Kim ,  Do-Kyoung Kwon ,  Minhua Zhou

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/463 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/91

Abstract: A method for sample adaptive offset (SAO) filtering and SAO parameter signaling in a video encoder is provided that includes determining SAO parameters for largest coding units (LCUs) of a reconstructed picture, wherein the SAO parameters include an indicator of an SAO filter type and a plurality of SAO offsets, applying SAO filtering to the reconstructed picture according to the SAO parameters, and entropy encoding LCU specific SAO information for each LCU of the reconstructed picture in an encoded video bit stream, wherein the entropy encoded LCU specific SAO information for the LCUs is interleaved with entropy encoded data for the LCUs in the encoded video bit stream. Determining SAO parameters may include determining the LCU specific SAO information to be entropy encoded for each LCU according to an SAO prediction protocol.

公开(公告)号：US12225191B2

公开(公告)日：2025-02-11

申请号：US17620582

申请日：2020-06-19

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY

Inventor： Jin Ho Lee ,  Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Hui Yong Kim ,  Jae Gon Kim ,  Yong Uk Yoon ,  Do Hyeon Park

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/117 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/463 ,  H04N19/593

Abstract: Disclosed herein are image encoding/decoding method and apparatus. The image decoding method according to the present invention includes: obtaining prediction mode information of a neighboring block for a current block from a bitstream; by using the obtained information, deriving a prediction mode of the neighboring block; and, based on the prediction mode of the neighboring block, reconstructing the current block.

公开(公告)号：US20250016324A1

公开(公告)日：2025-01-09

申请号：US18890283

申请日：2024-09-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Il-koo KIM ,  Young-o PARK

IPC: H04N19/136 ,  H04N19/124 ,  H04N19/172 ,  H04N19/174 ,  H04N19/463 ,  H04N19/58 ,  H04N19/70 ,  H04N19/86

Abstract: A method of determining a reference picture set (RPS), which is a set of reference pictures used in predictive decoding of a current picture that is to be decoded includes: obtaining a flag indicating whether the RPS is determined based on POC values of the current picture and a previous picture or whether the RPS is determined based on an index of a reference RPS, which is an identification value of the reference RPS that is one of pre-defined RPSs and is referred to in determining the RPS, and a delta RPS that is a difference value between a POC vale of a reference picture included in the reference RPS and a POC value of a reference picture included in the RPS; and determining the RPS according to a value of the flag.

公开(公告)号：US20240430483A1

公开(公告)日：2024-12-26

申请号：US18828785

申请日：2024-09-09

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

Inventor： Santiago DE LUXÁN HERNÁNDEZ ,  Detlev MARPE ,  Klaus-Robert MUELLER ,  Heiko SCHWARZ ,  Thomas WIEGAND

IPC: H04N19/61 ,  H04N19/12 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/463 ,  H04N19/625

Abstract: The coding efficiency of predictive picture codecs using transform-based residual coding is enhanced by allowing the codec to switch between a set of transforms for the sake of the transform-based residual coding. It turned out that even when using explicit signaling from encoder to decoder in order to signal the actual transform to be used out of the set of transforms from encoder to decoder, an increase in coding efficiency may result. Alternatively, the switching between the set of transforms may be performed without explicit signaling at all, or using a combination of explicit signaling and some sort of prediction of the switching.

公开(公告)号：US20240430445A1

公开(公告)日：2024-12-26

申请号：US18826760

申请日：2024-09-06

Applicant: LX Semicon Co., Ltd.

Inventor： Dong San JUN ,  Ha Hyun LEE ,  Jung Won KANG ,  Hyun Suk KO ,  Sung Chang LIM ,  Jin Ho LEE ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/126 ,  H04N19/13 ,  H04N19/176 ,  H04N19/463 ,  H04N19/513 ,  H04N19/593 ,  H04N19/96

Abstract: The present invention relates to a method for encoding/decoding a video. To this end, the method for decoding a video may include: deriving a spatial merge candidate from at least one of spatial candidate blocks of a current block, deriving a temporal merge candidate from a co-located block of the current block, and generating a prediction block of the current block based on at least one of the derived spatial merge candidate and the derived temporal merge candidate, wherein a reference picture for the temporal merge candidate is selected based on a reference picture list of a current picture including the current block and a reference picture list of a co-located picture including the co-located block.

公开(公告)号：US20240422351A1

公开(公告)日：2024-12-19

申请号：US18815245

申请日：2024-08-26

Applicant: LG Electronics Inc.

Inventor： Jaehyun LIM ,  Seungwook PARK ,  Yongjoon JEON ,  Jungsun KIM ,  Hendry HENDRY ,  Byeongmoon JEON ,  Joonyoung PARK ,  Chulkeun KIM ,  Naeri PARK

IPC: H04N19/593 ,  H04N19/11 ,  H04N19/117 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/426 ,  H04N19/44 ,  H04N19/463 ,  H04N19/61 ,  H04N19/625 ,  H04N19/82 ,  H04N19/96

Abstract: A method for intra prediction comprises determining a first MPM candidate corresponding to a left-side candidate block on the basis of a position of the left-side candidate block adjacent to a left side of a current block; determining a second MPM candidate corresponding to an upper-end candidate block on the basis of a position of the upper-end candidate block adjacent to an upper end of the current block; generating an MPM candidate list including a plurality of MPM candidates, on the basis of the first MPM candidate and the second MPM candidate; and determining one MPM candidate of the pluraity of the MPM candidates that constitute the MPM candidate list as an intra prediction mode of the current block, and performing intra prediction for the current block on the basis of the determined intra prediction mode to generate a prediction block corresponding to the current block.

公开(公告)号：US20240422321A1

公开(公告)日：2024-12-19

申请号：US18820873

申请日：2024-08-30

Applicant: HYUNDAI MOTOR COMPANY ,  KIA CORPORATION ,  DIGITALINSIGHTS INC.

Inventor： Yong Jo Ahn ,  Jong Seok Lee ,  Jin Heo ,  Seung Wook Park

IPC: H04N19/13 ,  H04N19/124 ,  H04N19/172 ,  H04N19/177 ,  H04N19/436 ,  H04N19/463

Abstract: A video coding method and an apparatus initialize a context model of Context-based Adaptive Binary Arithmetic Coding (CABAC) by using context information at a predetermined location in a previously reconstructed picture to increase video coding efficiency and enhance video quality. Or, the video coding method and the apparatus initialize a context model of CABAC by using context information at a predetermined location in a corresponding parallelization unit within the previously reconstructed picture.

公开(公告)号：US20240406417A1

公开(公告)日：2024-12-05

申请号：US18802073

申请日：2024-08-13

Applicant: Sun Patent Trust

Inventor： Hisao SASAI ,  Takahiro Nishi ,  Youji Shibahara ,  Toshiyasu Sugio ,  Kyoko Tanikawa ,  Toru Matsunobu ,  Kengo Terada

IPC: H04N19/174 ,  H04N19/117 ,  H04N19/127 ,  H04N19/436 ,  H04N19/44 ,  H04N19/463 ,  H04N19/70

Abstract: An image encoding method including: a constraint information generating step of generating tile constraint information indicating whether or not there is a constraint in filtering on boundaries between adjacent tiles among a plurality of tiles obtained by dividing a picture, and storing the tile constraint information into a sequence parameter set; and a filter information generating step of generating, for each of the boundaries, one of a plurality of filter information items respectively indicating whether or not filtering is executed on the boundaries, and storing the plurality of filter information items into a plurality of picture parameter sets, wherein, in the filter information generating step, the plurality of filter information items which indicate identical content are generated when the tile constraint information indicates that there is the constraint in the filtering.

公开(公告)号：US12149748B2

公开(公告)日：2024-11-19

申请号：US17788473

申请日：2020-12-23

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry

IPC: H04N19/82 ,  H04N19/117 ,  H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/167 ,  H04N19/169 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/463 ,  H04N19/60

Abstract: A picture may be divided into sub-pictures/slices/tiles. For example, the picture may be divided into sub-picture(s), and subpicture-related information may be used for coding. The sub-picture-related information may be generated by an encoding device and transmitted to a decoding device. According to embodiments of the present document, sub-picture-related information can be efficiently signaled.

公开(公告)号：US12143645B2

公开(公告)日：2024-11-12

申请号：US18120624

申请日：2023-03-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Vivienne Sze ,  Madhukar Budagavi ,  Woo-Shik Kim ,  Do-Kyoung Kwon ,  Minhua Zhou

IPC: H04N19/00 ,  H04N19/117 ,  H04N19/463 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86 ,  H04N19/91

Abstract: A method for sample adaptive offset (SAO) filtering and SAO parameter signaling in a video encoder is provided that includes determining SAO parameters for largest coding units (LCUs) of a reconstructed picture, wherein the SAO parameters include an indicator of an SAO filter type and a plurality of SAO offsets, applying SAO filtering to the reconstructed picture according to the SAO parameters, and entropy encoding LCU specific SAO information for each LCU of the reconstructed picture in an encoded video bit stream, wherein the entropy encoded LCU specific SAO information for the LCUs is interleaved with entropy encoded data for the LCUs in the encoded video bit stream. Determining SAO parameters may include determining the LCU specific SAO information to be entropy encoded for each LCU according to an SAO prediction protocol.