公开(公告)号：US10963987B2

公开(公告)日：2021-03-30

申请号：US16830288

申请日：2020-03-26

Applicant: MEDIATEK INC.

Inventor： Hung-Chih Lin ,  Chao-Chih Huang ,  Chia-Ying Li ,  Hui Ou Yang ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: G06T3/00 ,  G06T3/60 ,  G06T19/00 ,  G06T1/00 ,  G02B27/01

Abstract: A video processing method includes receiving a bitstream, and decoding, by a video decoder, the bitstream to generate a decoded frame. The decoded frame is a projection-based frame that has a 360-degree image/video content represented by triangular projection faces packed in a triangle-based projection layout. An omnidirectional image/video content of a viewing sphere is mapped onto the triangular projection faces via a triangle-based projection of the viewing sphere. An equator of the viewing sphere is not mapped along any side of each of the triangular projection faces.

公开(公告)号：US10909656B2

公开(公告)日：2021-02-02

申请号：US16359028

申请日：2019-03-20

Applicant: MEDIATEK INC.

Inventor： Hung-Chih Lin ,  Shen-Kai Chang

IPC: G06T3/00 ,  G06T3/40 ,  H04N19/179 ,  H04N19/186 ,  H04N19/70 ,  G06T7/90 ,  H04N5/232

Abstract: Methods and apparatus of processing cube face images are disclosed. According one method, each set of six cubic faces is converted into one rectangular assembled image by assembling each set of six cubic faces to maximize a number of continuous boundaries and to minimize a number of discontinuous boundaries. Each continuous boundary corresponds to one boundary between two connected faces with continuous contents from one face to another face. Each discontinuous boundary corresponds to one boundary between two connected faces with discontinuous contents from one face to another face. The method may further comprise applying video coding to the video sequence outputting the compressed data of the video sequence. According to another method, a fully-connected cubic-face image representing an unfolded image from the six faces of the cube is generated and the blank areas are filled with padding data to form a rectangular assembled image.

公开(公告)号：US10771791B2

公开(公告)日：2020-09-08

申请号：US15671070

申请日：2017-08-07

Applicant: MediaTek Inc.

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

IPC: H04N19/174 ,  H04N19/426 ,  H04N5/232 ,  H04N19/176 ,  G06T11/60 ,  H04N19/105 ,  H04N19/597 ,  H04N19/46 ,  H04N19/30 ,  H04N19/52 ,  H04N19/70

Abstract: For omnidirectional video such as 360-degree Virtual Reality (360VR) video, a video system that support independent decoding of different views of the omnidirectional video is provided. A decoder for such a system can extract a specified part of a bitstream to decode a desired perspective/face/view of an omnidirectional image without decoding the entire image while suffering minimal or no loss in coding efficiency.

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：US10587857B2

公开(公告)日：2020-03-10

申请号：US16392644

申请日：2019-04-24

Applicant: MEDIATEK INC.

Inventor： Hung-Chih Lin ,  Chao-Chih Huang ,  Chia-Ying Li ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: H04N13/117 ,  G06T15/10 ,  H04N19/597 ,  H04N5/232 ,  H04N5/341 ,  H04N13/111 ,  G06T19/00 ,  H04N19/70 ,  H04N19/85 ,  H04N13/00 ,  H04N19/00 ,  G06T9/00 ,  G06T3/40

Abstract: A video processing method includes receiving a bitstream, processing the bitstream to obtain at least one syntax element from the bitstream, and decoding the bitstream to generate a current decoded frame having a rotated 360-degree image/video content represented in a 360-degree Virtual Reality (360 VR) projection format. The at least one syntax element signaled via the bitstream indicates rotation information of content-oriented rotation that is involved in generating the rotated 360-degree image/video content, and includes a first syntax element. When the content-oriented rotation is enabled, the first syntax element indicates a rotation degree along a specific rotation axis.

公开(公告)号：US10560678B2

公开(公告)日：2020-02-11

申请号：US15802481

申请日：2017-11-03

Applicant: MEDIATEK INC.

Inventor： Hung-Chih Lin ,  Chao-Chih Huang ,  Chia-Ying Li ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: H04N13/117 ,  G06T15/10 ,  H04N19/597 ,  H04N5/232 ,  H04N5/341 ,  H04N13/111 ,  G06T19/00 ,  H04N13/00 ,  H04N19/00 ,  G06T9/00 ,  H04N19/70 ,  H04N19/85 ,  G06T3/40

Abstract: A video processing method includes: receiving a current input frame having a 360-degree image/video content represented in a 360-degree Virtual Reality (360 VR) projection format, applying content-oriented rotation to the 360-degree image/video content in the current input frame to generate a content-rotated frame having a rotated 360-degree image/video content represented in the 360 VR projection format, encoding the content-rotated frame to generate a bitstream, and signaling at least one syntax element via the bitstream, wherein the at least one syntax element is set to indicate rotation information of the content-oriented rotation.

公开(公告)号：US20190125187A1

公开(公告)日：2019-05-02

申请号：US16150282

申请日：2018-10-03

Applicant: MEDIATEK INC.

Inventor： Jing-Lin Kuo ,  Teng-Feng Zou ,  Chih-Chun Lin ,  Chia-Wei Chi ,  Hung-Chih Lin ,  Yu-Wen Chen

IPC: A61B5/00 ,  A61B5/0404 ,  A61B5/0432 ,  A61B5/0408 ,  A61B5/1455

Abstract: The present invention provides an electronic device including a first electrode set and a second electrode set with an optical sensor. The first electrode set is arranged to contact a first position of a human body, and the second electrode set with the optical sensor is arranged contact a second position of the human body, to receive a plurality of physiological signals to determine at least two physiological features simultaneously.

公开(公告)号：US20180192074A1

公开(公告)日：2018-07-05

申请号：US15860683

申请日：2018-01-03

Applicant: MEDIATEK INC.

Inventor： Cheng-Hsuan Shih ,  Shen-Kai Chang ,  Jian-Liang Lin ,  Hung-Chih Lin

IPC: H04N19/597 ,  H04N19/593 ,  H04N19/46 ,  H04N19/513 ,  H04N19/82

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/107 ,  H04N19/117 ,  H04N19/167 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513 ,  H04N19/59 ,  H04N19/593 ,  H04N19/82

Abstract: A video processing method includes receiving a projection-based frame, 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 projection faces packed in a 360-degree Virtual Reality (360 VR) projection layout, and there is at least one image content discontinuity boundary resulting from packing of the projection faces. The step of encoding the projection-based frame includes performing a prediction operation upon a current block in the projection-based frame, including: checking if the current block and a spatial neighbor are located at different projection faces and are on opposite sides of one image content discontinuity boundary; and when a checking result indicates that the current block and the spatial neighbor are located at different projection faces and are on opposite sides of one image content discontinuity boundary, treating the spatial neighbor as non-available.

公开(公告)号：US20180158170A1

公开(公告)日：2018-06-07

申请号：US15825081

申请日：2017-11-28

Applicant: MEDIATEK INC.

Inventor： Hung-Chih Lin ,  Chao-Chih Huang ,  Chia-Ying Li ,  Hui Ou Yang ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: G06T3/00 ,  G06T19/00 ,  G02B27/01 ,  G06T1/00

CPC classification number: G06T3/0062 ,  G02B27/017 ,  G06T1/0007 ,  G06T3/60 ,  G06T19/006 ,  G06T2207/10016

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 an octahedron projection layout, and encoding, by a video encoder, the sequence of projection-based frames to generate a bitstream. Each projection-based frame has a 360-degree image/video content represented by triangular projection faces packed in the octahedron projection layout. The omnidirectional image/video content of the viewing sphere is mapped onto the triangular projection faces via an octahedron projection of the viewing sphere. An equator of the viewing sphere is not mapped along any side of each of the triangular projection faces.

公开(公告)号：US20180130175A1

公开(公告)日：2018-05-10

申请号：US15802481

申请日：2017-11-03

Applicant: MEDIATEK INC.

Inventor： Hung-Chih Lin ,  Chao-Chih Huang ,  Chia-Ying Li ,  Jian-Liang Lin ,  Shen-Kai Chang

IPC: G06T3/40 ,  G06T19/00

Abstract: A video processing method includes: receiving a current input frame having a 360-degree image/video content represented in a 360-degree Virtual Reality (360 VR) projection format, applying content-oriented rotation to the 360-degree image/video content in the current input frame to generate a content-rotated frame having a rotated 360-degree image/video content represented in the 360 VR projection format, encoding the content-rotated frame to generate a bitstream, and signaling at least one syntax element via the bitstream, wherein the at least one syntax element is set to indicate rotation information of the content-oriented rotation.