公开(公告)号：US20210407144A1

公开(公告)日：2021-12-30

申请号：US17355414

申请日：2021-06-23

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/00 ,  G06T17/20

Abstract: An example method of encoding a point cloud includes determining one or more attribute parameters of an attribute of a point in the point cloud of a frame, wherein the one or more attribute parameters define how to determine or use a value of the attribute and are applicable to a plurality of points in the point cloud; and signaling, in a bitstream indicative of the point cloud, the one or more attribute parameters in a syntax structure that is specific to the frame.

公开(公告)号：US20210385303A1

公开(公告)日：2021-12-09

申请号：US17342249

申请日：2021-06-08

Applicant: QUALCOMM Incorporated

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

IPC: H04L29/06 ,  H04L12/801

Abstract: An example method of encoding a point cloud includes determining that residual values for all components except one component of an attribute of a point in the point cloud are equal to zero; based on the determination that the residual values for all components except the one component of the attribute are equal to zero, determining a value for the one component that is equal to a magnitude of a residual value of the one component of the attribute minus an offset; encoding the value of the one component; and signaling the encoded value in a bitstream.

公开(公告)号：US11184607B2

公开(公告)日：2021-11-23

申请号：US16889601

申请日：2020-06-01

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/105 ,  H04N19/46 ,  H04N19/172 ,  H04N19/70 ,  H04N19/159

Abstract: Techniques are described for video encoding and decoding with same picture or count numbering for scalability support. One example involves obtaining a portion of a picture (e.g., a slice, a block, or other portion) and determining if weighted prediction is enabled for the portion of the picture. When weighted prediction is enabled, a zero value picture order count offset indicating a reference picture from a reference picture can be used, though different portion of the picture (e.g., different slices of a picture) can have different picture order count offset values. The portion of the picture can then be reconstructed using the reference picture identified by the zero value picture order count offset. Additional embodiments can use weighted prediction flags and different offset value determinations to support scalability or reference pictures in weighted prediction with a different size than the picture being reconstructed.

公开(公告)号：US11178427B2

公开(公告)日：2021-11-16

申请号：US16783748

申请日：2020-02-06

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/593 ,  H04N19/147 ,  H04N19/176

Abstract: An example device for coding (encoding or decoding) video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to: partition a coding unit (CU) of video data into sub-blocks, the sub-blocks being arranged into a number of rows and a number of columns, the number of rows being greater than 1 and the number of columns being greater than 1; form intra-prediction blocks for each of the sub-blocks; and code the CU using the intra-prediction blocks.

公开(公告)号：US11159805B2

公开(公告)日：2021-10-26

申请号：US16723825

申请日：2019-12-20

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Joel Sole Rojals ,  Ye-Kui Wang ,  Dmytro Rusanovskyy ,  Done Bugdayci Sansli ,  Marta Karczewicz

IPC: H04N19/167 ,  H04N19/172 ,  H04N19/70 ,  H04N19/80 ,  H04N19/85

Abstract: Systems, methods, and computer readable media are described for generating a regional nesting message. In some examples, a video bitstream is obtained and an encoded video bitstream is generated using the video data. The encoded video bitstream includes a regional nesting message that contains a plurality of nested messages and a plurality of region data defining a plurality of regions of a picture of the encoded video bitstream. For example, a first nested message of the regional nesting message includes a first set of data and a first region identifier indicating that the first set of data is to be applied to a first region of the plurality of regions of the picture.

公开(公告)号：US11153583B2

公开(公告)日：2021-10-19

申请号：US16892709

申请日：2020-06-04

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/39 ,  H04N19/107 ,  H04N19/70 ,  H04N19/61 ,  H04N19/187

Abstract: A video encoder or video decoder can be configured to obtain multi-layer video data that includes at least a first layer and a second layer; determine a layer identification value for the first layer and a layer identification value for the second layer, wherein the layer identification value for the second layer is higher than the layer identification value for the first layer; store decoded pictures of the first layer and decoded pictures of the second layer in a decoded picture buffer; and in response to determining that a picture of a layer is an instantaneous decoding refresh (IDR) picture, remove from the decoded picture buffer, all decoded pictures of a layer the IDR picture belongs to, while leaving in the decoded picture buffer all decoded pictures with layer identifications lower than a layer identification of the layer the IDR picture belongs to.

公开(公告)号：US20210319595A1

公开(公告)日：2021-10-14

申请号：US17224674

申请日：2021-04-07

Applicant: QUALCOMM Incorporated

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

IPC: G06T9/20

Abstract: An example device for processing point cloud data includes a 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 count a number of edges of a cube of point cloud data comprising a vertex. The one or more processors are configured to set a variable based on a total of the counting. The one or more processors are also configured to process the point cloud data based on the variable.

公开(公告)号：US20210297655A1

公开(公告)日：2021-09-23

申请号：US17205578

申请日：2021-03-18

Applicant: QUALCOMM Incorporated

Inventor： Yong He ,  Vadim Seregin ,  Muhammed Zeyd Coban ,  Adarsh Krishnan Ramasubramonian ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/70 ,  H04N19/172 ,  H04N19/169 ,  H04N19/176 ,  H04N5/40

Abstract: A video encoder maintains a first reference picture list; maintains a second reference picture list; determines that a picture is an instantaneous decoding refresh (IDR) picture; determines that reference picture list syntax elements are present in a slice header for the IDR picture; and in response to determining that the picture is the IDR picture and that the reference picture list syntax elements are present in the slice header for the IDR picture, updates the first reference picture list and the second reference picture list such that no picture in the first reference picture list and no picture in the second reference picture list precedes, in output order or decoding order, any preceding instant random access point (IRAP) picture in decoding order.

公开(公告)号：US11128872B2

公开(公告)日：2021-09-21

申请号：US16510863

申请日：2019-07-12

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/159 ,  H04N19/52 ,  H04N19/105 ,  H04N19/96 ,  H04N19/593 ,  H04N19/176 ,  H04N19/11

Abstract: Techniques are described using Position Dependent Intra Prediction Combination (PDPC) with wide angle intra prediction. For example, a size of the current block of video data can be determined. Based on the size, a wide angle intra-prediction mode can be determined for the current block. A prediction block for the current block can be determined using the wide angle intra-prediction mode. A prediction sample from the prediction block can be modified to generate a modified prediction sample using PDPC, which can include determining one or more reference samples that are external to the current block based on the wide angle intra-prediction mode, and modifying the prediction sample to generate the modified prediction sample based on the determined one or more reference samples.

公开(公告)号：US20210266605A1

公开(公告)日：2021-08-26

申请号：US17179145

申请日：2021-02-18

Applicant: QUALCOMM Incorporated

Inventor： Dmytro Rusanovskyy ,  Adarsh Krishnan Ramasubramonian ,  Marta Karczewicz

IPC: H04N19/85 ,  H04N19/172 ,  H04N19/70

Abstract: An example device includes a memory configured to store video 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 first dynamic range adjustment (DRA) adaptation parameter set (APS) for a first picture of the video data and assign a first DRA APS ID to the first DRA APS. The one or more processors are configured to determine a second DRA APS for a second picture of the video data and assign a second DRA APS ID to the second DRA APS. The one or more processors are configured to process the second picture in accordance with the first DRA APS if the first DRA APS ID and the second DRA APS ID are equal.