公开(公告)号：US10448011B2

公开(公告)日：2019-10-15

申请号：US15460558

申请日：2017-03-16

Applicant: MEDIATEK INC.

Inventor： Shan Liu ,  Xiaozhong Xu ,  Jing Ye

IPC: H04N19/107 ,  H04N19/159 ,  H04N19/46 ,  H04N19/11 ,  H04N19/463 ,  H04N19/157 ,  H04N19/172 ,  H04N19/176

Abstract: An intra prediction method comprises receiving input data of a current block in a current picture, determines a current mode set including multiple intra prediction modes for the current block, derives a number of MPMs from the number of intra prediction modes in the current mode set, and determines the MPMs for the current block. The number of MPMs varies with the number of intra prediction modes in the current mode set. The method encodes or decodes the current block according to a current intra prediction mode selected from the current mode set. To process a non-square block, a current mode set is selected from multiple mode sets according to one or both of a longer side and a shorter side of the non-square block. A current intra prediction mode is selected from the current mode set and the non-square block is coded according to the current intra prediction mode.

公开(公告)号：US10230961B2

公开(公告)日：2019-03-12

申请号：US15611841

申请日：2017-06-02

Applicant: MEDIATEK INC.

Inventor： Shan Liu ,  Jing Ye ,  Xiaozhong Xu ,  Tzu-Der Chuang ,  Ching-Yeh Chen

IPC: H04N19/159 ,  H04N19/122 ,  H04N19/70 ,  H04N19/96 ,  H04N19/105 ,  H04N19/119 ,  H04N19/11 ,  H04N19/176 ,  H04N19/182

Abstract: A method and apparatus for video coding using template-based Intra prediction are disclosed. According to one method, where determining whether to apply the template-based Intra prediction or one or more parameters associated with the template-based Intra prediction depends on the current block size. According to yet another method, the quad-tree plus binary tree (QTBT) structure is used to partition an image or one or more areas of the current image into blocks. If the template-based Intra prediction is used for a current block and the current block is non-square, the width and height of the L-shaped reference pixel line are determined according to width and height of the current block. The L-shaped reference pixel line comprises a top reference pixel segment above the top template and a left reference pixel segment adjacent to a left side of the left template.