公开(公告)号：US10412407B2

公开(公告)日：2019-09-10

申请号：US15772876

申请日：2016-10-28

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Yi-Wen Chen

IPC: H04N19/52 ,  H04N19/91 ,  H04N19/176 ,  H04N19/159 ,  H04N19/124

Abstract: A method and apparatus for video coding utilizing a motion vector predictor (MVP) for a motion vector (MV) for a block are disclosed. According to an embodiment, a mean candidate is derived from at least two candidates in the current candidate list. The mean candidate includes two MVs for the bi-prediction or one MV for the uni-prediction, and at least one MV of the mean candidate is derived as a mean of the MVs of said at least two candidates in one of list 0 and list 1. The mean candidate is added to the current candidate list to form a modified candidate list, and one selected candidate is determined as a MVP or MVPs from the modified candidate list, for current MV or MVs of the current block. The current block is then encoded or decoded in Inter, Merge, or Skip mode utilizing the MVP or MVPs selected.

公开(公告)号：US20180225545A1

公开(公告)日：2018-08-09

申请号：US15424899

申请日：2017-02-06

Applicant: MEDIATEK INC.

Inventor： Jian-Liang Lin ,  Yu-Wen Huang

IPC: G06K9/46 ,  G06K9/62

CPC classification number: G06K9/4661 ,  G06K9/00664 ,  G06K9/4642 ,  G06K9/6267 ,  G06K9/6298 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/20192

Abstract: An image processing method applied to an image processing system. The image processing method comprises: (a) computing an image intensity distribution of an input image; (b) performing atmospheric light estimation to the input image; (c) performing transmission estimation according to a result of the step (a) to the input image, to generate a transmission estimation parameter; and (d) recovering scene radiance of the input image according to a result generated by the step (b) and the transmission estimation parameter. At least one of the steps (a)-(c) are performed to data corresponding to only partial pixels of the input image.

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：US10003810B2

公开(公告)日：2018-06-19

申请号：US14378965

申请日：2013-03-19

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Yu-Wen Huang ,  Jian-Liang Lin ,  Yi-Wen Chen ,  Shih-Ta Hsiang ,  Shan Liu ,  Shaw-Min Lei

IPC: H04N19/33 ,  H04N19/52 ,  H04N19/577 ,  H04N19/96

CPC classification number: H04N19/33 ,  H04N19/52 ,  H04N19/577 ,  H04N19/96

Abstract: A method and apparatus for coding video data using Inter prediction mode or Merge mode in a video coding system are disclosed, where the video data is configured into a Base Layer (BL) and an Enhancement Layer (EL), and the EL has higher spatial resolution or better video quality than the BL. In one embodiment, at least one information piece of motion information associated with one or more BL blocks in the BL is identified. A motion vector prediction (MVP) candidate list or a Merge candidate list for the selected block in the EL is then determined, where said at least one information piece associated with said one or more BL blocks in the BL is included in the MVP candidate list or the Merge candidate list. The input data associated with the selected block is coded or decoded using the MVP candidate list or the Merge candidate list.

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.

公开(公告)号：US20170006307A1

公开(公告)日：2017-01-05

申请号：US15268642

申请日：2016-09-19

Applicant: MEDIATEK INC.

Inventor： Fang-Yi Hsieh ,  Jian-Liang Lin

IPC: H04N19/59 ,  H04N19/139 ,  H04N19/43 ,  H04N19/159 ,  H04N19/105 ,  H04N19/152 ,  H04N19/156 ,  H04N19/11 ,  H04N19/117

CPC classification number: H04N19/59 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/132 ,  H04N19/139 ,  H04N19/152 ,  H04N19/156 ,  H04N19/159 ,  H04N19/172 ,  H04N19/177 ,  H04N19/43 ,  H04N19/44

Abstract: An apparatus for dynamically adjusting video decoding complexity includes a decoding resolution control circuit and an adaptive spatial resolution decoder. The decoding resolution control circuit is arranged to dynamically determine whether at least one portion of multiple frames should be decoded in accordance with a specific resolution differing from an original resolution of the frames. In addition, the adaptive spatial resolution decoder is arranged to decode the frames according to whether the at least one portion of the frames should be decoded in accordance with the specific resolution. In particular, the apparatus further includes a system capability analyzing circuit arranged to analyze system capability of at least a portion of the apparatus, in order to generate analyzing results for being sent to the decoding resolution control circuit. An associated method is also provided.

Abstract translation: 用于动态调整视频解码复杂度的装置包括解码分辨率控制电路和自适应空间分辨率解码器。 解码分辨率控制电路被布置为动态地确定是否应该根据与帧的原始分辨率不同的特定分辨率来解码多个帧的至少一部分。 此外，自适应空间分辨率解码器被设置为根据帧的至少一部分是否应当根据特定分辨率进行解码来解码帧。 具体地，该装置还包括系统能力分析电路，其被配置为分析该装置的至少一部分的系统能力，以便生成分析结果以被发送到解码分辨率控制电路。 还提供了相关联的方法。

公开(公告)号：US20160309186A1

公开(公告)日：2016-10-20

申请号：US15191428

申请日：2016-06-23

Applicant: MediaTek Inc.

Inventor： Yi-Wen Chen ,  Jian-Liang Lin ,  Jicheng An ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC: H04N19/597 ,  H04N19/172 ,  H04N19/61 ,  H04N19/70 ,  H04N19/105 ,  H04N19/176 ,  H04N19/52

CPC classification number: H04N19/597 ,  H04N19/105 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/463 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70

Abstract: A method for three-dimensional video encoding or decoding includes receiving first data associated with a current block of a current frame corresponding to a current view; determining a derived disparity vector for disparity-vector based motion-compensated-prediction (DV-MCP) of the current block, wherein the derived disparity vector is derived from a constrained neighboring block set of the current block, and the constrained neighboring block set corresponds to one or more spatial neighboring blocks on left side of the current block, one or more collocated blocks of the current block, or both said one or more spatial neighboring blocks on the left side and said one or more collocated blocks of the current block; and applying inter-view predictive encoding or decoding to the first data based on the derived disparity vector.

Abstract translation: 一种用于三维视频编码或解码的方法包括接收与当前视图对应的当前帧的当前块相关联的第一数据; 确定当前块的基于视差矢量的运动补偿预测（DV-MCP）的导出视差向量，其中从当前块的约束相邻块集合导出导出的视差矢量，并且约束相邻块集对应于 到当前块的左侧上的一个或多个空间相邻块，当前块的一个或多个并置块，或者左侧的所述一个或多个空间相邻块以及当前块的所述一个或多个并置块; 以及基于导出的视差向量将视频间预测编码或解码应用于第一数据。

公开(公告)号：US20160205410A1

公开(公告)日：2016-07-14

申请号：US15072807

申请日：2016-03-17

Applicant: MediaTek Inc.

Inventor： Jian-Liang Lin ,  Yu-Pao Tsai ,  Yi-Wen Chen ,  Jicheng An ,  Yu-Wen Huang ,  Shaw-Min Lei

IPC: H04N19/513 ,  H04N19/56 ,  H04N19/583 ,  H04N19/57

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/52 ,  H04N19/56 ,  H04N19/57 ,  H04N19/583

Abstract: A method and apparatus for deriving a motion vector predictor (MVP) for a motion vector (MV) of a current block of a current picture in Inter, or Merge, or Skip mode. The method selects a co-located block corresponding to a co-located picture and receives one or more reference motion vectors (MVs) of one or more co-located reference blocks associated with the co-located block. The method also determines a search set and determines a search order for the search set, if the search MV corresponding to the given reference list is not available, the search order then searches the search MV corresponding to a reference list different from the given reference list. Finally, the method determines the MVP for the current block based on the search set and the search order and provides the MVP for the current block.

Abstract translation: 一种用于在Inter或Merge或Skip模式中导出当前图像的当前块的运动矢量（MV）的运动矢量预测器（MVP）的方法和装置。 该方法选择与同位置图片相对应的共定位块，并且接收与同位置块相关联的一个或多个同位置参考块的一个或多个参考运动矢量（MV）。 该方法还确定搜索集并确定搜索集的搜索顺序，如果与给定参考列表相对应的搜索MV不可用，则搜索顺序然后搜索与给定参考列表不同的参考列表对应的搜索MV 。 最后，该方法基于搜索集和搜索顺序确定当前块的MVP，并为当前块提供MVP。

公开(公告)号：US20150288985A1

公开(公告)日：2015-10-08

申请号：US14442937

申请日：2013-11-15

Applicant: MEDIATEK INC.

Inventor： Yi-Wen Chen ,  Jian-Liang Lin

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/52 ,  H04N13/00

CPC classification number: H04N19/597 ,  H04N13/161 ,  H04N19/176 ,  H04N19/52

Abstract: A method and apparatus for three-dimensional video encoding or decoding with conditionally constrained disparity vector are disclosed. In one embodiment, a derived DV (disparity vector) for the current texture block is determined and DV constraint is applied or is not applied to the derived DV to obtain a final derived DV. Inter-view predictive encoding or decoding is then applied to the input data utilizing at least one of selected coding tools, wherein a same final derived DV is used by all selected coding tools, and the selected coding tools comprise inter-view residual prediction, view synthesis prediction and inter-view motion parameter prediction.

Abstract translation: 公开了一种用于具有条件约束的视差矢量的三维视频编码或解码的方法和装置。 在一个实施例中，确定当前纹理块的导出DV（视差向量），并且DV约束被应用或不应用于导出的DV以获得最终导出的DV。 然后使用所选择的编码工具中的至少一个将视图间预测编码或解码应用于输入数据，其中由所有选择的编码工具使用相同的最终导出的DV，并且所选择的编码工具包括视图间残差预测，视图 综合预测和视角间运动参数预测。