公开(公告)号：US10573076B2

公开(公告)日：2020-02-25

申请号：US15839799

申请日：2017-12-12

Applicant: MEDIATEK INC.

Inventor： Hung-Chih Lin ,  Chia-Ying Li ,  Le Shi ,  Ya-Hsuan Lee ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: G06T19/00 ,  G06T3/00 ,  G06T15/20 ,  G06T9/00 ,  G02B27/01

Abstract: A video processing method includes: receiving an omnidirectional image/video content corresponding to a viewing sphere, generating a sequence of projection-based frames according to the omnidirectional image/video content and a viewport-based cube projection layout, and encoding the sequence of projection-based frames to generate a bitstream. Each projection-based frame has a 360-degree image/video content represented by rectangular projection faces packed in the viewport-based cube projection layout. The rectangular projection faces include a first rectangular projection face, a second rectangular projection face, a third rectangular projection face, a fourth rectangular projection face, a fifth rectangular projection face, and a sixth rectangular projection face split into partial rectangular projection faces. The first rectangular projection face corresponds to user's viewport, and is enclosed by a surrounding area composed of the second rectangular projection face, the third rectangular projection face, the fourth rectangular projection face, the fifth rectangular projection face, and the partial rectangular projection faces.

公开(公告)号：US20180165886A1

公开(公告)日：2018-06-14

申请号：US15839799

申请日：2017-12-12

Applicant: MEDIATEK INC.

Inventor： Hung-Chih Lin ,  Chia-Ying Li ,  Le Shi ,  Ya-Hsuan Lee ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: G06T19/00 ,  G06T15/20 ,  G06T3/00

CPC classification number: G06T19/006 ,  G02B27/017 ,  G06T3/005 ,  G06T9/00 ,  G06T15/205 ,  G06T19/00

Abstract: A video processing method includes: receiving an omnidirectional image/video content corresponding to a viewing sphere, generating a sequence of projection-based frames according to the omnidirectional image/video content and a viewport-based cube projection layout, and encoding the sequence of projection-based frames to generate a bitstream. Each projection-based frame has a 360-degree image/video content represented by rectangular projection faces packed in the viewport-based cube projection layout. The rectangular projection faces include a first rectangular projection face, a second rectangular projection face, a third rectangular projection face, a fourth rectangular projection face, a fifth rectangular projection face, and a sixth rectangular projection face split into partial rectangular projection faces. The first rectangular projection face corresponds to user's viewport, and is enclosed by a surrounding area composed of the second rectangular projection face, the third rectangular projection face, the fourth rectangular projection face, the fifth rectangular projection face, and the partial rectangular projection faces.