公开(公告)号：US11842520B2

公开(公告)日：2023-12-12

申请号：US17224608

申请日：2021-04-07

Applicant: QUALCOMM Incorporated

Inventor： Geert Van der Auwera ,  Louis Joseph Kerofsky ,  Bappaditya Ray ,  Adarsh Krishnan Ramasubramonian ,  Marta Karczewicz

IPC: G06T9/00 ,  G01S17/89 ,  G06T9/40 ,  G06T17/20

CPC classification number: G06T9/001 ,  G01S17/89 ,  G06T9/40 ,  G06T17/20

Abstract: A method of decoding point cloud data comprises obtaining a bitstream that includes an arithmetically encoded syntax element indicating a vertical plane position of a planar mode of a node; and decoding the vertical plane position of the planar mode in the node, wherein decoding the vertical plane position of the planar mode comprises: determining a laser index of a laser candidate in a set of laser candidates, wherein the determined laser index indicates a laser beam that intersects the node; determining a context index based on whether the laser beam is above a first distance threshold, between the first distance threshold and a second distance threshold, between the second distance threshold and a third distance threshold, or below the third distance threshold; and arithmetically decoding the vertical plane position of the planar mode using a context indicated by the determined context index.

公开(公告)号：US20230377208A1

公开(公告)日：2023-11-23

申请号：US18318498

申请日：2023-05-16

Applicant: QUALCOMM Incorporated

Inventor： Anique Akhtar ,  Geert Van der Auwera ,  Adarsh Krishnan Ramasubramonian ,  Marta Karczewicz ,  Luong Pham Van

IPC: G06T9/00 ,  G06T3/40 ,  G06T9/40

CPC classification number: G06T9/002 ,  G06T3/40 ,  G06T9/40

Abstract: An example device for decoding point cloud data includes a memory configured to store point cloud data; and one or more processors implemented in circuitry and configured to: determine a number of times to upscale a downscaled encoded representation of a point cloud geometry; decode the downscaled encoded representation of the point cloud geometry; upscale the downscaled representation of the point cloud geometry the number of times to form an upscaled representation of the point cloud geometry; and reproduce a point cloud using the upscaled representation of the point cloud geometry.

公开(公告)号：US20230345045A1

公开(公告)日：2023-10-26

申请号：US18303390

申请日：2023-04-19

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Geert Van der Auwera ,  Luong Pham Van ,  Marta Karczewicz

IPC: H04N19/597 ,  G06T19/00

CPC classification number: H04N19/597 ,  G06T19/006

Abstract: A device for encoding or decoding point cloud data may be configured to, responsive to determining to predict a current point in a current frame using an inter prediction mode: identify a reference frame; derive one or more motion compensated reference points from the reference frame; selectively resample points in the reference frame based on the one or more motion compensated reference points to generate a resampled reference frame; and inter predict the current point in the current frame based on the resampled reference frame.

公开(公告)号：US20230342984A1

公开(公告)日：2023-10-26

申请号：US18304268

申请日：2023-04-20

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Geert Van der Auwera ,  Luong Pham Van ,  Marta Karczewicz

IPC: G06T9/00

CPC classification number: G06T9/001

Abstract: A device for encoding a point cloud comprises a memory configured to store point cloud data for the point cloud; and one or more processors configured to: determine a residual value associated with a current point of the point cloud, the residual value associated with the current point being a radius residual or an azimuth residual; determine a context for entropy encoding the residual value based on whether the current point is coded with intra prediction or inter prediction; and entropy encode the residual value using the determined context.

公开(公告)号：US20230319269A1

公开(公告)日：2023-10-05

申请号：US18331762

申请日：2023-06-08

Applicant: QUALCOMM Incorporated

Inventor： Sungwon Lee ,  Wei-Jung Chien ,  Adarsh Krishnan Ramasubramonian ,  Muhammed Zeyd Coban ,  Jianle Chen ,  Yi-Wen Chen ,  Marta Karczewicz

IPC: H04N19/114 ,  H04N19/70 ,  H04N19/159 ,  H04N19/107 ,  H04N19/31 ,  H04N19/187

CPC classification number: H04N19/114 ,  H04N19/70 ,  H04N19/159 ,  H04N19/107 ,  H04N19/31 ,  H04N19/187

Abstract: A device for encoding video data includes a memory configured to store video data, and a video encoder implemented in circuitry and configured to encode a future picture of the video data having a first display order position, the future picture being included in an intra period (IP) of the video data, the IP comprising a plurality of groups of pictures (GOPs), and after encoding the future picture, encode a picture of an ordinal first GOP of the plurality of GOPs using the future picture as a reference picture, each picture of the ordinal first GOP having display order positions earlier than the first display order position. Encoding the future picture in this manner may result in encoding performance improvements with minimal increases in encoding and decoding complexity.

公开(公告)号：US11765355B2

公开(公告)日：2023-09-19

申请号：US17395133

申请日：2021-08-05

Applicant: QUALCOMM Incorporated

Inventor： Dmytro Rusanovskyy ,  Adarsh Krishnan Ramasubramonian

IPC: H04N19/126 ,  H04N19/36 ,  H04N19/196 ,  H04N19/463 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/126 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/197 ,  H04N19/198 ,  H04N19/36 ,  H04N19/463

Abstract: A video encoder may be configured to apply a multi-stage quantization process, where residuals are first quantized using an effective quantization parameter derived from the statistics of the samples of the block. The residual is then further quantized using a base quantization parameter that is uniform across a picture. A video decoder may be configured to decode the video data using the base quantization parameter. The video decoder may further be configured to estimate the effective quantization parameter from the statistics of the decoded samples of the block. The video decoder may then use the estimated effective quantization parameter for use in determining parameters for other coding tools, including filters.

公开(公告)号：US11743501B2

公开(公告)日：2023-08-29

申请号：US17223789

申请日：2021-04-06

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Bappaditya Ray ,  Geert Van der Auwera ,  Louis Joseph Kerofsky ,  Marta Karczewicz

IPC: H04N19/70 ,  H04N19/119 ,  H04N19/597 ,  H04N19/136 ,  H04N19/174

CPC classification number: H04N19/70 ,  H04N19/119 ,  H04N19/136 ,  H04N19/174 ,  H04N19/597

Abstract: An example device for decoding point cloud data includes memory configured to store the point cloud data and one or more processors implemented in circuitry and coupled to the memory. The one or more processors are configured to determine dimensions of a region box and determine dimensions of a slice bounding box. The one or more processors are also configured to decode a slice of the point cloud data associated with the slice bounding box. The dimensions of the region box are constrained to not exceed the dimensions of the slice bounding box.

公开(公告)号：US11729428B2

公开(公告)日：2023-08-15

申请号：US17482012

申请日：2021-09-22

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Geert Van der Auwera ,  Bappaditya Ray ,  Marta Karczewicz

IPC: H04N19/70 ,  H04N19/31 ,  H04N13/161

CPC classification number: H04N19/70 ,  H04N13/161 ,  H04N19/31

Abstract: Example devices and techniques are disclosed for incorporating temporal identification information in geometry point cloud compression syntax structures. An example device for decoding point cloud data includes memory configured to store the point cloud data and one or more processors implemented in circuitry and communicatively coupled to the memory. The one or more processors are configured to determine a value of a temporal identifier (ID) of a syntax structure and decode the point cloud data based on the value of the temporal ID. The temporal ID of the syntax structure identifies a temporal layer to which point cloud data associated with the syntax structure belongs.

公开(公告)号：US11695940B2

公开(公告)日：2023-07-04

申请号：US17653086

申请日：2022-03-01

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Geert Van der Auwera ,  Luong Pham Van ,  Marta Karczewicz

IPC: H04N19/00 ,  H04N19/176 ,  H04N19/159 ,  H04N19/11

CPC classification number: H04N19/176 ,  H04N19/11 ,  H04N19/159

Abstract: A video coder performs a Most-Probable Mode (MPM) derivation process that derives one or more MPMs for a current block that is not coded using affine linear weighted intra prediction (ALWIP). As part of performing the MPM derivation process, the video coder determines whether a neighboring block of the current block is an ALWIP-coded neighboring block. Based on the neighboring block being an ALWIP-coded neighboring block, the video coder determines that a value of an intra prediction mode of the neighboring block is a value indicating a planar mode. The video coder codes the current block based on one of the MPMs for the current block.

公开(公告)号：US11659201B2

公开(公告)日：2023-05-23

申请号：US16990910

申请日：2020-08-11

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Adarsh Krishnan Ramasubramonian ,  Muhammed Zeyd Coban

IPC: H04N19/59 ,  H04N19/184 ,  H04N19/172

CPC classification number: H04N19/59 ,  H04N19/172 ,  H04N19/184

Abstract: Systems, methods, and computer-readable storage media for calculating scaling ratios are described. An example method can include obtaining a current picture of video data and one or more scaling windows associated with the current picture and/or a reference picture selected for use in coding the current picture; determining a first size of the current picture and/or a second size of the reference picture, the first size including a first height and a first width and the second size including a second height and a second width; based on the one or more scaling windows and the first size and/or the second size, determining one or more scaling ratios associated with the current picture and/or the reference picture.