公开(公告)号：WO2019034131A1

公开(公告)日：2019-02-21

申请号：PCT/CN2018/100933

申请日：2018-08-17

Applicant: MEDIATEK INC.

Inventor： LIN, Jian-Liang ,  WANG, Peng ,  LEE, Ya-Hsuan ,  LIN, Hung-Chih ,  CHANG, Shen-Kai

IPC: H04N13/00 ,  G06T3/00

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：WO2018127035A1

公开(公告)日：2018-07-12

申请号：PCT/CN2018/070029

申请日：2018-01-02

Applicant: MEDIATEK INC.

Inventor： LIN, Jian-Liang ,  WANG, Peng ,  LIN, Hung-Chih ,  CHANG, Shen-Kai

IPC: H04N21/2343 ,  G06T9/00

CPC classification number: H04N21/816 ,  G06T9/00 ,  H04N19/132 ,  H04N19/162 ,  H04N19/17 ,  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：WO2019037656A1

公开(公告)日：2019-02-28

申请号：PCT/CN2018/100953

申请日：2018-08-17

Applicant: MEDIATEK INC.

Inventor： WANG, Peng ,  LIN, Hung-Chih ,  LIN, Jian-Liang ,  CHANG, Shen-Kai

IPC: H04N19/85 ,  H04N19/597

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：WO2018184528A1

公开(公告)日：2018-10-11

申请号：PCT/CN2018/081723

申请日：2018-04-03

Applicant: MEDIATEK INC.

Inventor： LEE, Ya-Hsuan ,  WANG, Peng ,  LIN, Jian-Liang ,  CHANG, Shen-Kai

IPC: G06T3/00

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.