公开(公告)号：US11049323B2

公开(公告)日：2021-06-29

申请号：US16496954

申请日：2018-03-23

Applicant: MEDIATEK INC.

Inventor： Xin Wang ,  Lulin Chen ,  Wang Lin Lai

IPC: G06F3/01 ,  H04N19/17 ,  G06T19/00 ,  H04N19/172 ,  H04N19/167 ,  H04N21/4728 ,  G02B27/01 ,  G06K9/00 ,  G06T7/70 ,  H04N19/513

Abstract: A video processing method includes receiving a virtual reality (VR) content, obtaining a picture from the VR content, encoding the picture 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 transform property item that is set to enable at least one of a projection transformation, a packing transformation, a VR viewport selection, and a VR region of interest (ROI) selection in track derivation. In another exemplary implementation, the ISOBMFF file(s) may include a first parameter, a second parameter, and a third parameter associated with orientation of a viewport, with the first, second and third parameters indicating a yaw angle, a pitch angle and a roll angle of a center of the viewport, respectively. Further, an associated video processing apparatus is provided.

公开(公告)号：US10360721B2

公开(公告)日：2019-07-23

申请号：US15600256

申请日：2017-05-19

Applicant: MEDIATEK INC.

Inventor： Wang Lin Lai ,  Shan Liu

IPC: H04W4/00 ,  G06T15/20 ,  G06T17/05 ,  H04N13/296 ,  H04N13/232 ,  H04N13/221 ,  H04N13/122 ,  H04N13/194 ,  H04N13/117 ,  H04N13/239 ,  H04N13/243 ,  H04N13/344 ,  H04N13/383

Abstract: Aspects of the disclosure provide an apparatus that includes an interface circuit, an image generating circuit and a display device. The interface circuit is configured to receive media data with timed directorial information indicative of a region of interests at a time. The image generating circuit is configured to extract the timed directorial information, and generate one or more images of the region of interests based on the media data and the timed directorial information. The display device is configured to display the one or more images at the time.

公开(公告)号：US10182242B2

公开(公告)日：2019-01-15

申请号：US15101139

申请日：2014-12-26

Applicant: MediaTek Inc.

Inventor： Yu-Chen Sun ,  Jungsun Kim ,  Tzu-Der Chuang ,  Yi-Wen Chen ,  Wang Lin Lai ,  Shan Liu ,  Yu-Wen Huang

IPC: H04N19/593 ,  H04N19/186 ,  H04N19/124 ,  H04N19/176 ,  H04N19/182

Abstract: A method and apparatus for color index coding of a block of video data using index prediction based on reconstructed neighboring pixels are disclosed. In one embodiment, color index encoding or decoding is applied to the current pixel indices by deriving index prediction from neighboring pixel indices of the reconstructed neighboring pixels. The reconstructed neighboring pixel values are first transformed into the neighboring pixel indices according to a quantization table to map between major color indices and major color values of the current block. The quantization table can be based on a major color table for the current block or can also be derived at a decoder side. The decoding process may reconstruct the current pixels by converting decoded current pixel indices to reconstructed current pixel values according to the quantization table or by directly copying the reconstructed neighboring pixel values indicated by decoded current pixel indices.

公开(公告)号：US20180020248A1

公开(公告)日：2018-01-18

申请号：US15646837

申请日：2017-07-11

Applicant: MEDIATEK INC.

Inventor： Wang Lin Lai ,  Shan Liu

IPC: H04N21/2343 ,  H04N21/4728 ,  H04N21/437 ,  H04N21/218 ,  H04N21/435 ,  H04N21/235 ,  H04N21/81 ,  H04N21/4402

Abstract: Aspects of the disclosure provide an apparatus that includes an interface circuit, a processing circuit and a display device. The interface circuit is configured to receive media description information of media data. The media data includes a plurality of segment streams having different coverage in spatial domain for video content, the media description information is indicative of the different coverage in spatial domain of the plurality of segment streams. The processing circuit is configured to determine one or more segment streams based on a region of interests for image generation and the different coverage in spatial domain of the plurality of segment streams, select segments in the one or more segment streams, and cause the interface circuit to request and receive the selected segments. The display device is configured to display images generated based on the selected segments.

公开(公告)号：US20170345205A1

公开(公告)日：2017-11-30

申请号：US15600256

申请日：2017-05-19

Applicant: MEDIATEK INC.

Inventor： Wang Lin Lai ,  Shan Liu

IPC: G06T15/20 ,  H04N13/00 ,  H04N13/02 ,  G06T17/05

CPC classification number: G06T15/205 ,  G06T17/05 ,  H04N13/117 ,  H04N13/122 ,  H04N13/194 ,  H04N13/221 ,  H04N13/232 ,  H04N13/239 ,  H04N13/243 ,  H04N13/296 ,  H04N13/344 ,  H04N13/383

Abstract: Aspects of the disclosure provide an apparatus that includes an interface circuit, an image generating circuit and a display device. The interface circuit is configured to receive media data with timed directorial information indicative of a region of interests at a time. The image generating circuit is configured to extract the timed directorial information, and generate one or more images of the region of interests based on the media data and the timed directorial information. The display device is configured to display the one or more images at the time.