公开(公告)号：US20200286261A1

公开(公告)日：2020-09-10

申请号：US16810682

申请日：2020-03-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Esmaeil Faramarzi ,  Madhukar Budagavi ,  Rajan Laxman Joshi ,  Hossein Najaf-Zadeh ,  Indranil Sinharoy

IPC: G06T9/00 ,  G06T7/33

Abstract: An encoding device, a decoding device, and a method for mesh decoding are disclosed. The method for mesh decoding includes receiving a compressed bitstream. The method also includes separating, from the compressed bitstream, a first bitstream and a second bitstream. The method further includes decoding, from the second bitstream, connectivity information of a three dimensional (3D) mesh. The method additionally includes decoding, from the first bitstream, a first frame and a second frame that include patches. The patches included in the first frame represent vertex coordinates of the 3D mesh and the patches included in the second frame represent a vertex attribute of the 3D mesh. The method also includes reconstructing a point cloud based on the first and second frames. Additionally, the method also includes applying the connectivity information to the point cloud to reconstruct the 3D mesh.

公开(公告)号：US20200221125A1

公开(公告)日：2020-07-09

申请号：US16730321

申请日：2019-12-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Madhukar Budagavi ,  Hossein Najaf-Zadeh ,  Rajan Laxman Joshi

IPC: H04N19/597 ,  G06T3/00

Abstract: An encoding device, a method of encoding, and decoding device for point cloud compression of a 3D point cloud. The encoding device is configured to generate, for the three-dimensional (3D) point cloud, at least a set of geometry frames and a set of occupancy map frames for points of the 3D point cloud. The encoding device is also configured to select an occupancy precision value based on a quantization parameter (QP) associated with at least one generated geometry frame in the set of geometry frames, subsample at least one occupancy map frame in the set of occupancy map frames based on the selected occupancy precision value, and encode the set of geometry frames and the set of occupancy map frames into a bitstream for transmission.

公开(公告)号：US20200014940A1

公开(公告)日：2020-01-09

申请号：US16452357

申请日：2019-06-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Neha Dawar ,  Hossein Najaf-Zadeh ,  Rajan Laxman Joshi ,  Madhukar Budagavi

IPC: H04N19/20 ,  G06T9/00 ,  H04N19/172 ,  H04N19/182 ,  H04N19/80

Abstract: A decoding device, an encoding device and a method for point cloud decoding is disclosed. The method includes receiving a bitstream. The method also includes decoding the bitstream into a geometry frame and a texture frame. The geometry and texture frames represent include pixels representing points of the 3D point cloud from different layers. The method further includes deriving a set of missing geometry values from the pixels in the geometry frame and a set of missing texture values from the pixels in the texture frame. The method additionally includes generating a first set of frames representing geometry based on the geometry frame and the set of missing geometry values and generating a second set of frames representing texture based on the texture frame and the set of missing texture values. The method also includes generating the 3D point cloud using the first and second sets of frames.

公开(公告)号：US20190318488A1

公开(公告)日：2019-10-17

申请号：US16379675

申请日：2019-04-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngkwon Lim ,  Imed Bouazizi ,  Eric Ho Ching Yip ,  Rajan Laxman Joshi

IPC: G06T7/33 ,  G06K9/00 ,  G06T7/38 ,  H04N19/182 ,  H04N19/172 ,  H04N19/137

Abstract: An encoding device, a decoding device and a method for point cloud encoding is provided. The method includes generating, for a 3D point cloud, frames corresponding to attributes of the 3D point cloud and an occupancy map. The method also includes encoding, the frames to generate one or more bitstreams. The one or more bitstreams include individual tracks and media content. The individual tracks include media tracks and a timed metadata track. The timed metadata track references the media tracks and the media tracks correspond respectively to the attributes. The method also includes generating a container including the one or more bitstreams transmitting the container.

公开(公告)号：US20240355001A1

公开(公告)日：2024-10-24

申请号：US18627336

申请日：2024-04-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Youngkwon Lim ,  Rajan Laxman Joshi ,  Madhukar Budagavi

IPC: G06T9/00

CPC classification number: G06T9/001

Abstract: An apparatus includes a communication interface configured to receive a compressed bitstream including a base mesh sub-bitstream and a processor operably coupled to the communication interface. The processor is configured to decode a plurality of submeshes from the base mesh sub-bitstream. The processor is also configured to subdivide a submesh of the plurality of submeshes according to a subdivision iteration count to generate at least one subdivided submesh, including determine a number of vertex positions for the at least one subdivided submesh by use of a number of vertices associated with an original submesh and by use of distortion information between the original submesh and a base mesh at each subdivision iteration associated with the subdivision iteration count. The processor is also configured to reconstruct at least a portion of a mesh-frame using the vertex positions corresponding to the at least one subdivided submesh.

公开(公告)号：US12100184B2

公开(公告)日：2024-09-24

申请号：US18489796

申请日：2023-10-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hossein Najaf-Zadeh ,  Rajan Laxman Joshi ,  Madhukar Budagavi

IPC: G06T9/00 ,  G06T5/70 ,  G06T5/80 ,  G06T17/20

CPC classification number: G06T9/001 ,  G06T5/70 ,  G06T5/80 ,  G06T17/205

Abstract: A method for point cloud decoding includes receiving a bitstream. The method also includes decoding the bitstream into multiple frames that include pixels. Certain pixels of the multiple frames correspond to points of a three-dimensional (3D) point cloud. The multiple frames include a first set of frames that represent locations of the points of the 3D point cloud and a second set of frames that represent attribute information for the points of the 3D point cloud. The method further includes reconstructing the 3D point cloud based on the first set of frames. Additionally, the method includes identifying a first portion of the points of the reconstructed 3D point cloud based at least in part on a property associated with the multiple frames. The method also includes modifying a portion of the attribute information. The portion of the attribute information that is modified corresponds to the first portion of the points.

公开(公告)号：US20240236362A9

公开(公告)日：2024-07-11

申请号：US18479789

申请日：2023-10-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Madhukar Budagavi ,  Rajan Laxman Joshi

IPC: H04N19/54 ,  H04N19/52 ,  H04N19/597 ,  H04N19/70

CPC classification number: H04N19/54 ,  H04N19/52 ,  H04N19/597 ,  H04N19/70

Abstract: An apparatus includes a communication interface configured to receive a compressed video bitstream and a processor operably coupled to the communication interface. The processor is configured to determine, for a vertex in the compressed video bitstream, one or more vertex neighbors based on a signaled limit to a number of the one or more vertex neighbors. The processor is also configured to identify, based on a vertex motion vector (VMV) identifier signaled in the compressed video bitstream, a VMV predictor from among a plurality of VMV predictors to use for the vertex. The processor is also configured to reconstruct a mesh frame based on the determined one or more vertex neighbors and the identified VMV predictor.

公开(公告)号：US20240187615A1

公开(公告)日：2024-06-06

申请号：US18520421

申请日：2023-11-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Madhukar Budagavi ,  Rajan Laxman Joshi ,  Youngkwon Lim

IPC: H04N19/184 ,  H04N19/119

CPC classification number: H04N19/184 ,  H04N19/119

Abstract: An apparatus includes a communication interface configured to receive a bitstream for a compressed video and a processor operably coupled to the communication interface. The processor is configured to decode the bitstream for the compressed video. The processor is also configured to identify a mapping of view numbers of a plurality of images and a plurality of subpicture identifiers, each of the plurality of subpicture identifiers associated with a defined location in a video frame, wherein the mapping is signaled in the bitstream, and wherein each one of the view numbers is assigned to one image of the plurality of images based on a corresponding one of a plurality of camera viewpoints of a scene. The processor is also configured to instruct a display of at least one image based on at least one of the plurality of images.

公开(公告)号：US20230308684A1

公开(公告)日：2023-09-28

申请号：US18325969

申请日：2023-05-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Rajan Laxman Joshi ,  Madhukar Budagavi

IPC: H04N19/597 ,  H04N19/70 ,  H04N19/172 ,  H04N19/174 ,  H04N19/55

CPC classification number: H04N19/597 ,  H04N19/70 ,  H04N19/172 ,  H04N19/174 ,  H04N19/55

Abstract: A method for point cloud encoding includes generating, for a three-dimensional (3D) point cloud, video frames and atlas frames that includes pixels representing information about the 3D point cloud, wherein atlas tiles represent partitions in the atlas frames and video tiles represent partitions in the video frames. The method also includes setting a value for a syntax element according to relationships between sizes of the video tiles and sizes of the atlas tiles. The method further includes encoding the video frames and the atlas frames to generate video sub-bitstreams and an atlas sub-bitstream, respectively. Additionally, the method includes generating a bitstream based on the atlas sub-bitstream, the video sub-bitstreams, and the syntax element and transmitting the bitstream.

公开(公告)号：US20230169693A1

公开(公告)日：2023-06-01

申请号：US18160305

申请日：2023-01-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hossein Najaf-Zadeh ,  Rajan Laxman Joshi ,  Madhukar Budagavi

IPC: G06T9/00 ,  G06T5/00 ,  G06T17/20

CPC classification number: G06T9/001 ,  G06T5/002 ,  G06T5/006 ,  G06T17/205

Abstract: A method for point cloud decoding includes receiving a bitstream. The method also includes decoding the bitstream into multiple frames that include pixels. Certain pixels of the multiple frames correspond to points of a three-dimensional (3D) point cloud. The multiple frames include a first set of frames that represent locations of the points of the 3D point cloud and a second set of frames that represent attribute information for the points of the 3D point cloud. The method further includes reconstructing the 3D point cloud based on the first set of frames. Additionally, the method includes identifying a first portion of the points of the reconstructed 3D point cloud based at least in part on a property associated with the multiple frames. The method also includes modifying a portion of the attribute information. The portion of the attribute information that is modified corresponds to the first portion of the points.