公开(公告)号：US20210176475A1

公开(公告)日：2021-06-10

申请号：US17110208

申请日：2020-12-02

Applicant: MediaTek Inc.

Inventor： Chih-Wei Hsu ,  Lulin Chen ,  Yu-Ling Hsiao ,  Chun-Chia Chen ,  Ching-Yeh Chen ,  Chen-Yen Lai

IPC: H04N19/167 ,  H04N19/46 ,  H04N19/70 ,  H04N19/169 ,  H04N19/176

Abstract: A method for specifying layout of subpictures in video pictures is provided. A video decoder receives data from a bitstream to be decoded as a current picture of a video. For a current subpicture of a set of subpictures of the current picture, the video decoder determines a position of the current subpicture based on a width and a height of the current picture and a previously determined width and height of a particular subpicture in the set of subpictures. The video decoder reconstructs the current picture and the current subpicture based on the determined position.

公开(公告)号：US10742999B2

公开(公告)日：2020-08-11

申请号：US15861503

申请日：2018-01-03

Applicant: MediaTek Inc.

Inventor： Xin Wang ,  Wang Lin Lai ,  Lulin Chen ,  Shan Liu

IPC: H04N19/167 ,  H04N19/172 ,  H04N21/81 ,  H04N21/44 ,  H04N21/6587 ,  H04N21/4728 ,  H04N19/597 ,  H04N19/48

Abstract: The techniques described herein relate to methods, apparatus, and computer readable media configured to encode or decode a region of interest associated with video data. A spherical region structure is associated with the video data that specifies the region of interest on a sphere, the spherical region structure including a reference point of the region of interest on the sphere, and data indicative of a set of side points, comprising a side point for each side of the region of interest on the sphere. The region of interest in the video data is determined based on the reference point and the set of side points. The video data can be composite video data. The spherical region structure, and/or metadata based on the spherical region structure, can be implicitly or explicitly associated with the video data.

公开(公告)号：US20180109817A1

公开(公告)日：2018-04-19

申请号：US15730851

申请日：2017-10-12

Applicant: MediaTek Inc.

Inventor： Xin Wang ,  Wang Lin Lai ,  Lulin Chen ,  Shan Liu

IPC: H04N21/235 ,  H04N19/40 ,  H04N19/184 ,  G06T19/00 ,  H04N13/04

CPC classification number: H04N21/2353 ,  G06T19/006 ,  H04N13/388 ,  H04N19/184 ,  H04N19/40 ,  H04N21/234318 ,  H04N21/2365 ,  H04N21/8456 ,  H04N21/854 ,  H04N21/85406

Abstract: A method or system for supporting dynamic construction of a user selected sub-region (e.g., viewport or region of interest) from other sub-regions of a reference media presentation is presented. The components of the reference media presentation are encoded as component tracks. A streaming decoder receives a streaming media file of the reference media presentation and displays an arbitrarily selected sub-region of the reference media presentation. The streaming media file has a derived track that (i) references one or more of the plurality of component tracks and (ii) specifies a set of operations for constructing media samples based on the media samples of the referenced component tracks. The streaming decoder provides media samples for the selected sub-region by retrieving the referenced component tracks and performing the set of operations specified by the derived track.

公开(公告)号：US20180091735A1

公开(公告)日：2018-03-29

申请号：US15709695

申请日：2017-09-20

Applicant: MediaTek Inc.

Inventor： Xin Wang ,  Lulin Chen ,  Wang Lin Lai ,  Shan Liu

IPC: H04N5/232 ,  H04N19/597 ,  G11B27/34

CPC classification number: H04N5/23238 ,  G11B27/34 ,  H04N19/597

Abstract: A method that specifies, signals and uses coding-independent code points (CICP) in processing media contents from multiple media sources is provided. An apparatus implementing the method receives media contents captured by a plurality of media sources in one or more clusters. The apparatus processes the media contents to provide a plurality of coding-independent code points for the plurality of media sources. The apparatus also encodes the media contents to provide at least one elementary stream.

公开(公告)号：US11425388B2

公开(公告)日：2022-08-23

申请号：US17218320

申请日：2021-03-31

Applicant: MEDIATEK INC.

Inventor： Yu-Wen Huang ,  Lulin Chen ,  Chih-Wei Hsu

IPC: H04N19/132 ,  H04N19/119 ,  H04N19/192 ,  H04N19/176 ,  H04N19/70 ,  H04N19/186 ,  H04N19/46

Abstract: Video processing methods and apparatuses include receiving input data associated with a current picture composed of multiple Coding Tree Units (CTUs) for encoding or decoding, partitioning the current picture into one or more slices including raster scan slices or rectangular slices, and for each slice in the current picture, encoding or decoding each slice by always processing CTUs within each slice in a raster scan order. Each slice includes an integer number of complete CTUs in the current picture that are exclusively contained in a single Network Access Layer (NAL) unit. Tile partition and tile concept may be removed to reduce the coding complexity of video processing.

公开(公告)号：US11405649B2

公开(公告)日：2022-08-02

申请号：US17178134

申请日：2021-02-17

Applicant: MEDIATEK INC.

Inventor： Chih-Wei Hsu ,  Lulin Chen ,  Chun-Chia Chen ,  Yu-Ling Hsiao ,  Yu-Wen Huang ,  Ching-Yeh Chen ,  Tzu-Der Chuang

IPC: H04N19/70 ,  H04N19/174 ,  H04N19/184 ,  H04N19/119

Abstract: A video system that partitions slices of video pictures into slice chunks is provided. A video decoder receives data from a bitstream to be decoded as a current picture of a video. When a first syntax element in a picture parameter set (PPS) of the current picture indicates that one or more slices of the current picture are allowed to be divided into multiple slice chunks and when a second syntax element in a slice header of a current slice of the current picture indicates that data of the current slice is encoded and delivered in two or more slice chunks, the video decoder parses and specifies sizes and positions of the slice chunks of the current slice and reconstructs the current picture based on the slice chunks of the current slice.

公开(公告)号：US11350131B2

公开(公告)日：2022-05-31

申请号：US16908436

申请日：2020-06-22

Applicant: MediaTek Inc.

Inventor： Shih-Ta Hsiang ,  Lulin Chen ,  Tzu-Der Chuang ,  Chih-Wei Hsu ,  Ching-Yeh Chen ,  Olena Chubach ,  Yu-Wen Huang

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/124 ,  H04N19/176

Abstract: A method for performing transform skip mode (TSM) in a video decoder is provided. A video decoder receives data from a bitstream to be decoded as a plurality of video pictures. The video decoder parses the bitstream for a first syntax element in a sequence parameter set (SPS) of a current sequence of video pictures. When the first syntax element indicates that transform skip mode is allowed for the current sequence of video pictures and when transform skip mode is used for a current block in a current picture of the current sequence, the video decoder reconstructs the current block by using quantized residual signals that are not transformed.

公开(公告)号：US11146824B2

公开(公告)日：2021-10-12

申请号：US17134672

申请日：2020-12-28

Applicant: MEDIATEK INC.

Inventor： Shih-Ta Hsiang ,  Ching-Yeh Chen ,  Tzu-Der Chuang ,  Lulin Chen

IPC: H04N19/70 ,  H04N19/172 ,  H04N19/132 ,  H04N19/33 ,  H04N19/119 ,  H04N19/105 ,  H04N19/159

Abstract: Video processing methods and apparatuses for processing video pictures referring to a high-level syntax set include receiving input data, determining a first syntax element indicating whether reference picture resampling is disabled or constrained, determining a second syntax element indicating whether subpicture partitioning is disabled or constrained, and encoding or decoding the video pictures. The first and second syntax elements are restricted to disable or constrain subpicture partitioning when reference picture resampling is enabled or disable or constrain reference picture resampling when subpicture partitioning is enabled. The first syntax element and the second syntax element are syntax elements signaled in the high level syntax set.

公开(公告)号：US20210258613A1

公开(公告)日：2021-08-19

申请号：US17178134

申请日：2021-02-17

Applicant: MediaTek Inc.

Inventor： Chih-Wei Hsu ,  Lulin Chen ,  Chun-Chia Chen ,  Yu-Ling Hsiao ,  Yu-Wen Huang ,  Ching-Yeh Chen ,  Tzu-Der Chuang

IPC: H04N19/70 ,  H04N19/119 ,  H04N19/184 ,  H04N19/174

Abstract: A video system that partitions slices of video pictures into slice chunks is provided. A video decoder receives data from a bitstream to be decoded as a current picture of a video. When a first syntax element in a picture parameter set (PPS) of the current picture indicates that one or more slices of the current picture are allowed to be divided into multiple slice chunks and when a second syntax element in a slice header of a current slice of the current picture indicates that data of the current slice is encoded and delivered in two or more slice chunks, the video decoder parses and specifies sizes and positions of the slice chunks of the current slice and reconstructs the current picture based on the slice chunks of the current slice.

公开(公告)号：US10819907B2

公开(公告)日：2020-10-27

申请号：US16498397

申请日：2018-03-29

Applicant: MEDIATEK INC.

Inventor： Xin Wang ,  Lulin Chen ,  Wang Lin Lai

IPC: H04N5/232 ,  H04N13/178 ,  H04N13/139 ,  H04N21/234 ,  H04N21/236 ,  H04N21/81 ,  H04N21/2343 ,  H04N21/2362 ,  H04N21/2365

Abstract: A video processing method includes receiving a virtual reality (VR) content, encoding visual data obtained from the VR content to generate a part of a coded bitstream, and encapsulating the part of the coded bitstream into ISO Base Media File Format (ISOBMFF) file (s). In one exemplary implementation, the ISOBMFF file (s) may include a timed metadata track associated with a sphere visual track, where the timed metadata track is set to signal that the associated sphere visual track contains at least one spherical region contributed from at least one region visual track. In another exemplary implementation, the ISOBMFF file (s) may include a timed metadata track associated with a region visual track, where the timed metadata track is set to signal that the associated region visual track contributes to at least one spherical region carried in at least one sphere visual track. Further, an associated video processing apparatus is provided.