公开(公告)号：US20250119528A1

公开(公告)日：2025-04-10

申请号：US18904743

申请日：2024-10-02

Applicant: QUALCOMM Incorporated

Inventor： Po-Han Lin ,  Jian-Liang Lin ,  Yao-Jen Chang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593 ,  H04N19/70

Abstract: A device for decoding encoded video data is configured to determine that a chroma block of the encoded video data is coded in a cross-component prediction (CCP) mode; generate a merge candidate list for the chroma block, wherein the merge candidate list includes at least two prediction candidates generated by different CCP modes and a third prediction candidate, wherein the third prediction candidate comprises a fusion prediction candidate; receive, in the encoded video data, a syntax element set to a value; select a prediction candidate from the merge candidate list based on the value of the syntax element; determine a prediction block for the chroma block based on the selected prediction candidate; determine a decoded block of video data based on the prediction block for the chroma block; and output a decoded picture of video data that includes the decoded block of video data.

公开(公告)号：US20240357078A1

公开(公告)日：2024-10-24

申请号：US18633167

申请日：2024-04-11

Applicant: QUALCOMM Incorporated

Inventor： Jian-Liang Lin ,  Po-Han Lin ,  Vadim Seregin ,  Marta Karczewicz ,  Yao-Jen Chang ,  Zhi Zhang

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176 ,  H04N19/182 ,  H04N19/50 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176 ,  H04N19/182 ,  H04N19/50 ,  H04N19/70

Abstract: A method of encoding or decoding video data includes determining, for a current block, a plurality of blocks for fusing; determining a respective first weight for two or more pixels of a first block of the plurality of blocks based on a respective position of the two or more pixels of the first block; determining a respective second weight for two or more pixels of a second block of the plurality of blocks; fusing the two or more pixels of the first block and the two or more pixels of the second block based on the respective first weight for the two or more pixels of the first block and the respective second weight for the two or more pixels of the second block to generate a prediction signal; and encoding or decoding the current block based on the prediction signal.

公开(公告)号：US20240297981A1

公开(公告)日：2024-09-05

申请号：US18442740

申请日：2024-02-15

Applicant: QUALCOMM Incorporated

Inventor： Po-Han Lin ,  Jian-Liang Lin ,  Bappaditya Ray ,  Yao-Jen Chang ,  Han Huang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/147 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/147 ,  H04N19/176

Abstract: A method of encoding or decoding video data includes constructing a template matching candidate list for a current block of the video data based on a plurality of template patterns; and encoding or decoding the current block based on the template matching candidate list.

公开(公告)号：US20240223748A1

公开(公告)日：2024-07-04

申请号：US18402049

申请日：2024-01-02

Applicant: QUALCOMM Incorporated

Inventor： Po-Han Lin ,  Jian-Liang Lin ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/167 ,  H04N19/176 ,  H04N19/513 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/167 ,  H04N19/176 ,  H04N19/521 ,  H04N19/70

Abstract: A method of coding video data comprises: determining a template pattern from among a set of two or more template patterns; identifying a reference template based on a similarity of the reference template and a current template, wherein the reference template and the current template have a shape defined by the template pattern, the reference template includes previously reconstructed samples and the current template includes reference samples of a current block of a current picture of the video data; obtaining, based on the reference template, a prediction block for a current block of a current picture of the video data; and encoding or decoding the current block based on the prediction block.

公开(公告)号：US20250119536A1

公开(公告)日：2025-04-10

申请号：US18891043

申请日：2024-09-20

Applicant: QUALCOMM Incorporated

Inventor： Yao-Jen Chang ,  Po-Han Lin ,  Vadim Seregin ,  Jian-Liang Lin ,  Marta Karczewicz

IPC: H04N19/11 ,  H04N19/156 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/593 ,  H04N19/70

Abstract: A video decoder may be configured to receive a first instance of a flag for a first block, with a first value for the flag indicating that a cross-component prediction (CCP) mode is derived without signaling and a second value for the flag indicating that the CCP mode is signaled; in response to determining that the first instance of the flag is set to the first value, derive a first CCP mode for the first block; determine a first predicted chroma block for the first block using the first CCP mode; determine a decoded version of the first block based on the first predicted chroma block; and output a picture of decoded video data that includes the decoded version of the first block.

公开(公告)号：US20250008113A1

公开(公告)日：2025-01-02

申请号：US18754788

申请日：2024-06-26

Applicant: QUALCOMM Incorporated

Inventor： Zhi Zhang ,  Han Huang ,  Jian-Liang Lin ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/159 ,  H04N19/119 ,  H04N19/176 ,  H04N19/513 ,  H04N19/54

Abstract: A video decoder determines that a current block of size width (WCB)×height (HCB) is coded in an affine prediction mode; predicts each subblock of a first plurality of subblocks using an affine motion model to determine an initial prediction block, each subblock having a size of width (WSB)×height (HSB) and WSB being less than WCB and HSB being less than HCB; applies a bi-directional optical flow process to first and second subblocks of a second plurality of subblocks to determine first and second refined prediction subblocks, each subblock having a size of width (WSBIPB)×height (HSBIPB), WSBIPB being less than or equal to WCB and less than or equal to WSB and HSBIPB being less than or equal to HCB and less than or equal to HSB; and determines a refined prediction block based on the first refined subblock and the second refined subblock.

公开(公告)号：US20250008085A1

公开(公告)日：2025-01-02

申请号：US18755330

申请日：2024-06-26

Applicant: QUALCOMM Incorporated

Inventor： Po-Han Lin ,  Jian-Liang Lin ,  Yao-Jen Chang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: A method of encoding or decoding video data includes storing a block vector (BV) for a current block in a history BV list for encoding or decoding a subsequent block, wherein the current block is encoded or decoded in intra temporal motion vector prediction (IntraTMP) mode, and wherein the history BV list includes BVs for blocks that do not neighbor the subsequent block; deriving a candidate list of BVs for the subsequent block based on BVs from the history BV list that includes the BV for the current block; and encoding or decoding the subsequent block based on the candidate list of BVs.

公开(公告)号：US20240357079A1

公开(公告)日：2024-10-24

申请号：US18633182

申请日：2024-04-11

Applicant: QUALCOMM Incorporated

Inventor： Jian-Liang Lin ,  Po-Han Lin ,  Vadim Seregin ,  Marta Karczewicz ,  Yao-Jen Chang ,  Zhi Zhang

IPC: H04N19/105 ,  H04N19/174 ,  H04N19/176

CPC classification number: H04N19/105 ,  H04N19/174 ,  H04N19/176

Abstract: A method of encoding or decoding video data includes selecting a group of blocks based on probing samples determined from pixels that are proximate to the blocks in the group of blocks and current probing samples determined from pixels that are proximate to a current block; fusing the blocks in the group of blocks to generate a prediction signal; and encoding or decoding the current block based on the prediction signal.

公开(公告)号：US20240333911A1

公开(公告)日：2024-10-03

申请号：US18617841

申请日：2024-03-27

Applicant: QUALCOMM Incorporated

Inventor： Po-Han Lin ,  Jian-Liang Lin ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70 ,  H04N19/80

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70 ,  H04N19/80

Abstract: A method of encoding or decoding video data, the method comprising: applying a sub-pel precision mode to generate a prediction block for a current block of the video data, wherein a syntax element indicates that the sub-pel precision mode is applied to the current block and applying the sub-pel precision mode comprises: applying an interpolation filter to samples of a reference region to generate an array of samples at full-pel and sub-pel precision; and identifying, within the array, a reference template of the prediction block, wherein the reference template of the prediction block is a best match for a template of the current block within the array, wherein a template pattern defines a shape of the reference template of the prediction block and the template of the current block; and encoding or decoding the current block using the prediction block for the current block.