公开(公告)号：US20190238836A1

公开(公告)日：2019-08-01

申请号：US16378781

申请日：2019-04-09

Applicant: HFI Innovation Inc.

Inventor： Mei GUO ,  Xin ZHAO ,  Xun GUO ,  Shaw-Min LEI

IPC: H04N19/105 ,  H04N19/157 ,  H04N19/182 ,  H04N19/593 ,  H04N19/14

CPC classification number: H04N19/105 ,  H04N19/14 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/593

Abstract: A method and apparatus for intra prediction for a current block using directional intra prediction based on neighboring pixels around the current block are disclosed. Embodiment according to the present invention derives the gradient for the current pixel from the neighboring reconstructed pixels along a prediction direction of directional intra prediction. The gradient derived is used to form the final intra prediction. In another embodiment of the present invention, the intra prediction for slant vertical and horizontal directions is derived based on the neighboring reconstructed pixels in a neighboring row adjacent to the top side of the current block and the neighboring reconstructed pixels in a neighboring column adjacent to the left side of the current block.

公开(公告)号：US20190182508A1

公开(公告)日：2019-06-13

申请号：US15895314

申请日：2018-02-13

Applicant: HFI Innovation Inc.

Inventor： Liang ZHAO ,  Jicheng AN ,  Xin ZHAO ,  Xun GUO

IPC: H04N19/60 ,  H04N19/186 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

CPC classification number: H04N19/60 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/96

Abstract: A method includes receiving the video bitstream from a media or a processor, recovering a first coded block flag (cbf) from the video bitstream based on a context-based adaptive binary arithmetic coding (CABAC) decoding process according to a first context formation, wherein the first cbf is associated with a first transform unit (TU) of a first color component, and the first cbf indicates whether the first TU of the first color component has at least one non-zero transform coefficient, and recovering a second cbf from the video bitstream based on the CABAC decoding process according to a second context formation, wherein the second cbf is associated with a second TU of a second color component, and the second cbf indicates whether the second TU of the second color component has at least one non-zero transform coefficient.