公开(公告)号：US11494870B2

公开(公告)日：2022-11-08

申请号：US16639118

申请日：2018-08-17

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Peng Wang ,  Ya-Hsuan Lee ,  Hung-Chih Lin ,  Shen-Kai Chang

IPC: G06T3/00 ,  H04N19/597 ,  H04N19/85 ,  G06T19/20 ,  H04N19/86

Abstract: An exemplary video processing method includes: receiving an omnidirectional content corresponding to a sphere; obtaining a plurality of projection faces from the omnidirectional content of the sphere according to a pyramid projection; creating at least one padding region; and generating a projection-based frame by packing the projection faces and the at least one padding region in a pyramid projection layout. The projection faces packed in the pyramid projection layout include a first projection face. The at least one padding region packed in the pyramid projection layout includes a first padding region. The first padding region connects with at least the first projection face, and forms at least a portion of one boundary of the pyramid projection layout.

公开(公告)号：US10652516B2

公开(公告)日：2020-05-12

申请号：US15860671

申请日：2018-01-03

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Peng Wang ,  Hung-Chih Lin ,  Shen-Kai Chang

IPC: H04N13/161 ,  G06T3/00 ,  H04N13/139 ,  H04N19/597 ,  H04N19/59 ,  H04N19/00

Abstract: A video processing method includes receiving an omnidirectional content corresponding to a sphere, generating a projection-based frame according to the omnidirectional content and a pyramid projection layout, and encoding, by a video encoder, the projection-based frame to generate a part of a bitstream. The projection-based frame has a 360-degree content represented by a base projection face and a plurality of lateral projection faces packed in the pyramid projection layout. The base projection face and the lateral projection faces are obtained according to at least projection relationship between a pyramid and the sphere.

公开(公告)号：US20180359459A1

公开(公告)日：2018-12-13

申请号：US15766829

申请日：2018-04-03

Applicant: MEDIATEK INC.

Inventor： Ya-Hsuan Lee ,  Peng Wang ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: H04N13/161 ,  H04N13/111

CPC classification number: H04N13/161 ,  G06T3/005 ,  H04N13/111

Abstract: A video processing method includes obtaining projection face(s) from an omnidirectional content of a sphere, and obtaining a re-sampled projection face by re-sampling at least a portion of a projection face of the projection face(s) through non-uniform mapping. The omnidirectional content of the sphere is mapped onto the projection face(s) via a 360-degree Virtual Reality (360 VR) projection. The projection face has a first source region and a second source region. The re-sampled projection face has a first re-sampled region and a second re-sampled region. The first re-sampled region is derived from re-sampling the first source region with a first sampling density. The second re-sampled region is derived from re-sampling the second source region with a second sampling density that is different from the first sampling density.

公开(公告)号：US11004173B2

公开(公告)日：2021-05-11

申请号：US16143410

申请日：2018-09-26

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Peng Wang ,  Lin Liu ,  Ya-Hsuan Lee ,  Hung-Chih Lin ,  Shen-Kai Chang

IPC: H04N19/182 ,  H04N19/59 ,  G06T11/00 ,  G06T3/00 ,  G06T19/00 ,  H04N19/597 ,  H04N19/55 ,  H04N19/86

Abstract: A video processing method includes: obtaining a plurality of projection faces from an omnidirectional content of a sphere, wherein the omnidirectional content of the sphere is mapped onto the projection faces via cubemap projection, and the projection faces comprise a first projection face; obtaining, by a re-sampling circuit, a first re-sampled projection face by re-sampling at least a portion of the first projection face through non-uniform mapping; generating a projection-based frame according to a projection layout of the cubemap projection, wherein the projection-based frame comprises the first re-sampled projection face packed in the projection layout; and encoding the projection-based frame to generate a part of a bitstream.

公开(公告)号：US10827159B2

公开(公告)日：2020-11-03

申请号：US16105147

申请日：2018-08-20

Applicant: MEDIATEK INC.

Inventor： Peng Wang ,  Hung-Chih Lin ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: H04N13/178 ,  H04N19/597 ,  H04N13/139 ,  H04N5/232 ,  H04N19/70

Abstract: According to one method, at a source side or an encoder side, a selected viewport associated with the 360-degree virtual reality images is determined. One or more parameters related to the selected pyramid projection format are then determined. According to the present invention, one or more syntax elements for said one or more parameters are included in coded data of the 360-degree virtual reality images. The coded data of the 360-degree virtual reality images are provided as output data. At a receiver side or a decoder side, one or more syntax elements for one or more parameters are parsed from the coded data of the 360-degree virtual reality images. A selected pyramid projection format associated with the 360-degree virtual reality images is determined based on information including said one or more parameters. The 360-degree virtual reality images are then recovered according to the selected viewport.

公开(公告)号：US10356386B2

公开(公告)日：2019-07-16

申请号：US15766829

申请日：2018-04-03

Applicant: MEDIATEK INC.

Inventor： Ya-Hsuan Lee ,  Peng Wang ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: H04N13/161 ,  G06T3/00 ,  H04N13/111

Abstract: A video processing method includes obtaining projection face(s) from an omnidirectional content of a sphere, and obtaining a re-sampled projection face by re-sampling at least a portion of a projection face of the projection face(s) through non-uniform mapping. The omnidirectional content of the sphere is mapped onto the projection face(s) via a 360-degree Virtual Reality (360 VR) projection. The projection face has a first source region and a second source region. The re-sampled projection face has a first re-sampled region and a second re-sampled region. The first re-sampled region is derived from re-sampling the first source region with a first sampling density. The second re-sampled region is derived from re-sampling the second source region with a second sampling density that is different from the first sampling density.

公开(公告)号：US20180192024A1

公开(公告)日：2018-07-05

申请号：US15860671

申请日：2018-01-03

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Peng Wang ,  Hung-Chih Lin ,  Shen-Kai Chang

IPC: H04N13/00 ,  G06T3/00

CPC classification number: H04N13/161 ,  G06T3/0087 ,  H04N13/139 ,  H04N19/00 ,  H04N19/59 ,  H04N19/597

Abstract: A video processing method includes receiving an omnidirectional content corresponding to a sphere, generating a projection-based frame according to the omnidirectional content and a pyramid projection layout, and encoding, by a video encoder, the projection-based frame to generate a part of a bitstream. The projection-based frame has a 360-degree content represented by a base projection face and a plurality of lateral projection faces packed in the pyramid projection layout. The base projection face and the lateral projection faces are obtained according to at least projection relationship between a pyramid and the sphere.

公开(公告)号：US20200234399A1

公开(公告)日：2020-07-23

申请号：US16639118

申请日：2018-08-17

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Peng Wang ,  Ya-Hsuan Lee ,  Hung-Chih Lin ,  Shen-Kai Chang

IPC: G06T3/00 ,  H04N19/85 ,  H04N19/597 ,  G06T19/20

Abstract: An exemplary video processing method includes: receiving an omnidirectional content corresponding to a sphere; obtaining a plurality of projection faces from the omnidirectional content of the sphere according to a pyramid projection; creating at least one padding region; and generating a projection-based frame by packing the projection faces and the at least one padding region in a pyramid projection layout. The projection faces packed in the pyramid projection layout include a first projection face. The at least one padding region packed in the pyramid projection layout includes a first padding region. The first padding region connects with at least the first projection face, and forms at least a portion of one boundary of the pyramid projection layout.

公开(公告)号：US20190026858A1

公开(公告)日：2019-01-24

申请号：US16143410

申请日：2018-09-26

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Peng Wang ,  LIN LIU ,  Ya-Hsuan Lee ,  Hung-Chih Lin ,  Shen-Kai Chang

IPC: G06T3/00 ,  G06T19/00 ,  H04N19/182

Abstract: A video processing method includes: obtaining a plurality of projection faces from an omnidirectional content of a sphere, wherein the omnidirectional content of the sphere is mapped onto the projection faces via cubemap projection, and the projection faces comprise a first projection face; obtaining, by a re-sampling circuit, a first re-sampled projection face by re-sampling at least a portion of the first projection face through non-uniform mapping; generating a projection-based frame according to a projection layout of the cubemap projection, wherein the projection-based frame comprises the first re-sampled projection face packed in the projection layout; and encoding the projection-based frame to generate a part of a bitstream.