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公开(公告)号：US10825229B2
公开(公告)日：2020-11-03
申请号：US16816273
申请日：2020-03-12
Applicant: MEDIATEK INC.
Inventor： Jian-Liang Lin , Hung-Chih Lin , Chia-Ying Li , Shen-Kai Chang , Chi-Cheng Ju , Chao-Chih Huang , Hui Ouyang
Abstract: A projection-based frame is generated according to an omnidirectional video frame and a triangle-based projection layout. The projection-based frame has a 360-degree image content represented by triangular projection faces assembled in the triangle-based projection layout. A 360-degree image content of a viewing sphere is mapped onto the triangular projection faces via a triangle-based projection of the viewing sphere. One side of a first triangular projection face has contact with one side of a second triangular projection face, one side of a third triangular projection face has contact with another side of the second triangular projection face. One image content continuity boundary exists between one side of the first triangular projection face and one side of the second triangular projection face, and another image content continuity boundary exists between one side of the third triangular projection face and another side of the second triangular projection face.
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公开(公告)号：US20200226711A1
公开(公告)日：2020-07-16
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
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.
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Patent Agency Ranking
公开(公告)号：US20200211258A1
公开(公告)日：2020-07-02
申请号：US16816273
申请日：2020-03-12
Applicant: MEDIATEK INC.
Inventor： Jian-Liang Lin , Hung-Chih Lin , Chia-Ying Li , Shen-Kai Chang , Chi-Cheng Ju , Chao-Chih Huang , Hui Ouyang
Abstract: A projection-based frame is generated according to an omnidirectional video frame and a triangle-based projection layout. The projection-based frame has a 360-degree image content represented by triangular projection faces assembled in the triangle-based projection layout. A 360-degree image content of a viewing sphere is mapped onto the triangular projection faces via a triangle-based projection of the viewing sphere. One side of a first triangular projection face has contact with one side of a second triangular projection face, one side of a third triangular projection face has contact with another side of the second triangular projection face. One image content continuity boundary exists between one side of the first triangular projection face and one side of the second triangular projection face, and another image content continuity boundary exists between one side of the third triangular projection face and another side of the second triangular projection face.
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公开(公告)号：US10679324B2
公开(公告)日：2020-06-09
申请号：US16460958
申请日：2019-07-02
Applicant: MEDIATEK INC.
Inventor： Hung-Chih Lin , Chao-Chih Huang , Chia-Ying Li , Hui Ou Yang , Jian-Liang Lin , Shen-Kai Chang
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 an octahedron projection layout. An omnidirectional image/video content of a 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.
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公开(公告)号：US10368067B2
公开(公告)日：2019-07-30
申请号：US15618216
申请日：2017-06-09
Applicant: MEDIATEK INC.
Inventor： Hung-Chih Lin , Jian-Liang Lin , Chia-Ying Li , Chao-Chih Huang , Shen-Kai Chang
IPC: H04N19/00 , H04N19/117 , H04N19/167 , H04N19/172 , H04N19/196 , H04N19/463 , H04N19/70 , H04N19/82 , H04N5/232 , H04N19/597 , H04N19/46 , H04N5/225
Abstract: Methods and apparatus of processing cube face images are disclosed. According to embodiments of the present invention, one or more discontinuous boundaries within each assembled cubic frame are determined and used for selective filtering, where the filtering process is skipped at said one or more discontinuous boundaries within each assembled cubic frame when the filtering process is enabled. Furthermore, the filtering process is applied to one or more continuous areas in each assembled cubic frame.
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公开(公告)号：US20180332305A1
公开(公告)日：2018-11-15
申请号：US15772818
申请日：2017-09-30
Applicant: MEDIATEK INC.
Inventor： Jian-Liang Lin , Hung-Chih Lin , Chia-Ying Li , Shen-Kai Chang , Chi-Cheng Ju
IPC: H04N19/597 , H04N19/70 , H04N19/184 , H04N19/91
CPC classification number: H04N19/597 , G06K9/36 , H04N19/184 , H04N19/70 , H04N19/91
Abstract: A video encoding method includes: setting a 360-degree Virtual Reality (360 VR) projection layout of projection faces, wherein the projection faces have a plurality of triangular projection faces located at a plurality of positions in the 360 VR projection layout, respectively; encoding a frame having a 360-degree image content represented by the projection faces arranged in the 360 VR projection layout to generate a bitstream; and for each position included in at least a portion of the positions, signaling at least one syntax element via the bitstream, wherein the at least one syntax element is set to indicate at least one of an index of a triangular projection view filled into a corresponding triangular projection face located at the position and a rotation angle of content rotation applied to the triangular projection view filled into the corresponding triangular projection face located at the position.
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公开(公告)号：US20170262255A1
公开(公告)日：2017-09-14
申请号：US15450005
申请日：2017-03-05
Applicant: MEDIATEK INC.
Inventor： Xin-Wei Shih , Chia-Ying Li , Chao-Ling Hsu , Yiou-Wen Cheng , Shen-Kai Chang
CPC classification number: G06F3/165 , G11B20/10527 , G11B27/10 , G11B2020/10546 , H04R29/006 , H04S2400/15
Abstract: An audio synchronization method includes: receiving a first audio signal from a first recording device; receiving a second audio signal from a second recording device; performing a correlation operation upon the first audio signal and the second audio signal to align a first pattern of the first audio signal and the first pattern of the second audio signal; after the first patterns of the first audio signal and the second audio signal are aligned, calculating a difference between a second pattern of the first audio signal and the second pattern of the second audio signal; and obtaining a starting-time difference between the first audio signal and the second audio signal for audio synchronization according to the difference between the second pattern of the first audio signal and the second pattern of the second audio signal.
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