公开(公告)号：US20170134734A1

公开(公告)日：2017-05-11

申请号：US15331059

申请日：2016-10-21

Applicant: MEDIATEK INC.

Inventor： Tung-Hsing WU ,  Li-Heng CHEN ,  Han-Liang CHOU

IPC: H04N19/176

CPC classification number: H04N19/176 ,  H04N19/119 ,  H04N19/154 ,  H04N19/182 ,  H04N19/186 ,  H04N19/91

Abstract: Method and apparatus of image coding using block prediction (BP) allowing multiple block sizes are disclosed. According to one method, first distortion for the current block coded using BP with a first block size is derived using at least partial second distortion for the current block coded using BP with a first block size. According to another method, a flag indicating whether the BP using variable block sizes is enabled. According to yet another method, when a current block is coded using BP by partitioning the current block into multiple partitions, predictors for two partitions in different reconstructed pixel line groups are derived from different reconstructed pixel line groups. According to still yet another method, for coding image data in a non-444 color sampling format using BP, the predictors for chrominance pixels in the current block are derived from the predictors for the luminance pixels of the current block.

公开(公告)号：US20160227238A1

公开(公告)日：2016-08-04

申请号：US15000190

申请日：2016-01-19

Applicant: MediaTek Inc.

Inventor： Tung-Hsing WU ,  Han-Liang CHOU

IPC: H04N19/436 ,  H04N19/56 ,  H04N19/52

CPC classification number: H04N19/436 ,  H04N19/433 ,  H04N19/52 ,  H04N19/56 ,  H04N19/593

Abstract: Method and apparatus of video coding using coding modes including Intra Block Copy (IntraBC) for a video coding system incorporating multi-stage pipeline processing is disclosed. In order to overcome data dependency issue due to the use of pipeline architecture, a first embodiment uses constrained previous reconstructed region for IntraBC estimation by excluding unavailable reconstructed previous reconstructed data due to the multi-stage pipeline processing. In the second embodiment, the unavailable reconstructed data is replaced by source pixel data.

Abstract translation: 公开了使用包括用于包含多级流水线处理的视频编码系统的帧内复制（IntraBC）的编码模式的视频编码的方法和装置。 为了克服由于使用流水线架构而导致的数据依赖性问题，第一实施例使用受限的先前重构区域进行IntraBC估计，由于多级流水线处理而排除不可用的重建先前重构数据。 在第二实施例中，不可用的重建数据被源像素数据代替。