公开(公告)号：US20230007303A1

公开(公告)日：2023-01-05

申请号：US17942307

申请日：2022-09-12

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Noritaka IGUCHI ,  Toshiyasu SUGIO

IPC: H04N19/60 ,  H04N19/12 ,  H04N19/30

Abstract: A three-dimensional data encoding method includes: obtaining an attribute information item of a three-dimensional point; executing an encoding process that executes a transform process on a numerical value indicated by the attribute information item and encodes the attribute information item or that encodes the attribute information item without executing the transform process, the transform process performing at least one of scaling or offset, the scaling performing at least one of a multiplication and division operation or a shift operation, the offset performing an addition and subtraction operation; and generating a bitstream including the attribute information item encoded and a transform identification information item indicating whether the transform process has been executed.

公开(公告)号：US20230007252A1

公开(公告)日：2023-01-05

申请号：US17780429

申请日：2020-11-25

Applicant: Fraunhofer-Gesellschaft Zur Förderung derangewandten Forschung e.V.

Inventor： Benjamin Bross ,  Santiago De Luxán Hernández ,  Heiko Schwarz ,  Detlev Marpe ,  Thomas Wiegand

IPC: H04N19/12 ,  H04N19/176 ,  H04N19/18 ,  H04N19/167 ,  H04N19/129

Abstract: Decoder for decoding a transformed representation of a sample block from a data stream. If a first coded coefficient is located inside a predetermined subarea of the transform coefficient block and if the underlying transform is within a first set of available transforms, the decoder decodes coefficients along a first coefficient scan order. If the transform is within a second set of In available transforms, the decoder decodes coefficients located within the predetermined subarea along a second coefficient scan order, and infers that coefficients located outside the predetermined subarea are zero. The first coefficient scan order is so that coefficients outside the predetermined subarea are scanned between two transform coefficients located inside the predetermined subarea. The second coefficient scan order does not scan any coefficient outside the predetermined subarea between scanning the coefficients within the predetermined subarea.

公开(公告)号：US11533515B2

公开(公告)日：2022-12-20

申请号：US17380371

申请日：2021-07-20

Applicant: SK TELECOM CO., LTD.

Inventor： Jeong-yeon Lim ,  Jae-seob Shin ,  Se-hoon Son ,  Sun-young Lee

IPC: H04N7/12 ,  H04N19/96 ,  H04N19/103 ,  H04N19/176 ,  H04N19/122 ,  H04N19/119 ,  H04N19/12 ,  H04N19/64

Abstract: Disclosed herein are a QTBT split structure allowing blocks of various shapes capable of more efficiently reflecting various local characteristics of video and a method of efficiently signaling the split structure.

公开(公告)号：US20220400286A1

公开(公告)日：2022-12-15

申请号：US17892740

申请日：2022-08-22

Applicant: LG Electronics Inc.

Inventor： Moonmo KOO ,  Jaehyun LIM ,  Seunghwan KIM

IPC: H04N19/61 ,  H04N19/18 ,  H04N19/169 ,  H04N19/176 ,  H04N19/124 ,  H04N19/186 ,  H04N19/12 ,  H04N19/70 ,  H04N19/157 ,  H04N19/132

Abstract: An image decoding method according to the present document comprises a step of deriving modified transform coefficients, wherein the step of deriving the modified transform coefficients comprises a step of setting an LFNST apply variable about whether to apply an LFNST on the basis of the tree type of the current block, a transform coefficient coding flag for each component of the current block, or a transform skip flag for each component of the current block, and can comprise a step of parsing an LFNST index on the basis of the value of the LFNST apply variable.

公开(公告)号：US20220394298A1

公开(公告)日：2022-12-08

申请号：US17789251

申请日：2020-12-24

Applicant: InterDigital VC Holdings France

Inventor： Karam Naser ,  Fabrice Le Leannec ,  Franck Galpin ,  Tangi Poirier

IPC: H04N19/61 ,  H04N19/176 ,  H04N19/109 ,  H04N19/12 ,  H04N19/147 ,  H04N19/105 ,  H04N19/625

Abstract: Some operations associated with transform decoding may provide coding gains for intra-predicted coding blocks but not for coding blocks predicted using certain inter-prediction tools or techniques. These operations may include, for example, multiple transform selection (MTS) and/or transform skip, and the inter-prediction tools or techniques may include one or more of affine motion compensation, combined inter and intra prediction (CIIP), a triangular partition mode (TPM), or a geometric merge mode (GEO). Thus, systems, methods, and instrumentalities associated with versatile video coding may be configured such that the aforementioned operations associated with transform decoding may be disabled for coding blocks that are predicted using one or more the inter-prediction tools or techniques described herein. Many benefits may be derived from disabling these operations including, for example, reduction of encoding time and/or signaling overhead.

公开(公告)号：US20220394259A1

公开(公告)日：2022-12-08

申请号：US17875069

申请日：2022-07-27

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

Inventor： Li Zhang ,  Kai Zhang ,  Jizheng Xu ,  Hongbin Liu ,  Yue Wang

IPC: H04N19/12 ,  H04N19/176 ,  H04N19/18 ,  H04N19/48 ,  H04N19/60

Abstract: A video processing method includes determining, for a conversion between a current block of a video and a bitstream representation of the video, whether to enable a level mapping operation or a level remapping operation based on a rule, wherein the level mapping operation or the level remapping operation includes changing between a first representation of a residual coefficient of the current block and a second representation of the residual coefficient of the current block based on neighboring residual coefficients of the residual coefficient; and performing the conversion by selectively using the level mapping operation or the level remapping operation based on the determining.

公开(公告)号：US11521024B2

公开(公告)日：2022-12-06

申请号：US16948861

申请日：2020-10-02

Applicant: Intel Corporation

Inventor： Yen-Kuang Chen ,  Shao-Wen Yang ,  Ibrahima J. Ndiour ,  Yiting Liao ,  Vallabhajosyula S. Somayazulu ,  Omesh Tickoo ,  Srenivas Varadarajan

IPC: G06K9/62 ,  H04L9/06 ,  G06F21/64 ,  G06F21/53 ,  G06N5/02 ,  G06N3/04 ,  G06F21/45 ,  H04L9/32 ,  H04W4/70 ,  G06F21/44 ,  G06F16/538 ,  G06F16/535 ,  G06F16/54 ,  G06F21/62 ,  G06F9/50 ,  G06N3/063 ,  G06V10/20 ,  G06V10/40 ,  G06V10/75 ,  G06V10/44 ,  G06V20/00 ,  G06V40/20 ,  G06V40/16 ,  G06F9/48 ,  H04L67/51 ,  G06T7/11 ,  G06V10/96 ,  G06V30/262 ,  G06K15/02 ,  G06N3/08 ,  H04L67/12 ,  H04N19/80 ,  G06F16/951 ,  H04N19/46 ,  G06T7/70 ,  H04W12/02 ,  H04L9/00 ,  H04N19/12 ,  H04N19/124 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/44 ,  H04N19/48 ,  H04N19/513 ,  G06V30/194 ,  G06T7/20 ,  H04N19/42 ,  H04N19/625 ,  H04N19/63 ,  G06T7/223 ,  H04L67/10

Abstract: In one embodiment, an apparatus comprises a communication interface and a processor. The communication interface is to communicate with a plurality of devices. The processor is to: receive compressed data from a first device, wherein the compressed data is associated with visual data captured by sensor(s); perform a current stage of processing on the compressed data using a current CNN, wherein the current stage of processing corresponds to one of a plurality of processing stages associated with the visual data, and wherein the current CNN corresponds to one of a plurality of CNNs associated with the plurality of processing stages; obtain an output associated with the current stage of processing; determine, based on the output, whether processing associated with the visual data is complete; if the processing is complete, output a result associated with the visual data; if the processing is incomplete, transmit the compressed data to a second device.

公开(公告)号：US20220385903A1

公开(公告)日：2022-12-01

申请号：US17765948

申请日：2020-10-05

Applicant: LG Electronics Inc.

Inventor： Sunmi YOO ,  Jungah CHOI ,  Jangwon CHOI

IPC: H04N19/12 ,  H04N19/176 ,  H04N19/124 ,  H04N19/60 ,  H04N19/132 ,  H04N19/70

Abstract: According to the disclosure of the present document, transform skip availability information and palette availability information are signaled via a sequence parameter set (SPS), and transform skip- and/or palette coding-related information can be effectively parsed/signaled on the basis of at least one of the transform skip availability information and the palette availability information. Accordingly, bits that need to be signaled for video/image coding can be reduced, and coding efficiency can be improved.

公开(公告)号：US20220377332A1

公开(公告)日：2022-11-24

申请号：US17810187

申请日：2022-06-30

Applicant: Bytedance Inc.

Inventor： Weijia Zhu ,  Li Zhang ,  Jizheng Xu ,  Kai Zhang ,  Ye-kui Wang

IPC: H04N19/12 ,  H04N19/186 ,  H04N19/70 ,  H04N19/184 ,  H04N19/132

Abstract: A method of video processing includes performing a conversion between a video unit of a video and a bitstream of the video according to a rule, wherein the rule specifies whether the bitstream includes at least one of a control flag of a chroma block-based delta pulse code modulation (BDPCM) mode, a palette mode, or an adaptive color transform (ACT) mode is based on a value of a chroma array type of the video.

公开(公告)号：US20220368906A1

公开(公告)日：2022-11-17

申请号：US17816283

申请日：2022-07-29

Applicant: CANON KABUSHIKI KAISHA

Inventor： Christopher James ROSEWARNE

IPC: H04N19/12 ,  H04N19/176 ,  H04N19/60

Abstract: The present disclosure provides a method 1200 of decoding a transform block in an image frame from a bitstream. The method comprises decoding a single truncated unary binarisation from the bitstream, the single truncated unary binarisation being used for a horizontal transform and a vertical transform of a transform block of the image frame. The method then determines a type of the horizontal and vertical transform based on the decoded single truncated unary binarisation and decodes the transform block in the image frame by applying the determined type of horizontal and vertical transform to the transform block of the image.