公开(公告)号：US11375226B2

公开(公告)日：2022-06-28

申请号：US16827881

申请日：2020-03-24

Applicant: MEDIATEK INC.

Inventor： Tzu-Der Chuang ,  Ching-Yeh Chen ,  Han Huang ,  Xiaozhong Xu ,  Shan Liu

IPC: H04N19/513 ,  H04N19/423 ,  H04N19/52 ,  H04N19/537 ,  H04N19/119 ,  H04N19/176 ,  H04N19/58 ,  H04N19/105

Abstract: An embodiment of the method receives input data associated with a current block in a current picture at a video encoder or receiving a video bitstream corresponding to compressed data including the current block in the current picture at a video decoder, wherein the current block is coded or to be coded in an affine mode according to an affine motion model; calculates and storing affine parameters for a plurality of coded blocks in the current picture; retrieves the affine parameters of one or more coded blocks from the temporal buffer; derives an affine candidate including affine motion vectors using the retrieved affine parameters of the neighboring block; and encodes or decodes the current block by predicting the current block using one or more motion compensated blocks by the derived affine candidate.

公开(公告)号：US10904580B2

公开(公告)日：2021-01-26

申请号：US16304203

申请日：2017-05-27

Applicant: MEDIATEK INC.

Inventor： Han Huang ,  Ching-Yeh Chen ,  Shan Liu ,  Xiaozhong Xu ,  Tzu-Der Chuang ,  Yu-Wen Huang

IPC: H04N19/96 ,  H04N19/119 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/124

Abstract: Processing methods and apparatuses for video data of a color component comprise receiving input data associated with a current coding block (CB) in a current slice, where the video data is partitioned into multiple CBs according to a partitioning method. A Quantization Parameter (QP) minimum block area or a depth flag is determined and an area of the current CB according to a width and a height or a combined depth of the current CB is calculated and compared with the QP minimum block area or the depth flag. Signaling of QP information for the current CB is conditioned by the comparing result. The QP information for the current CB is used to quantize a residual signal of the current CB or recovering a quantized residual signal of the current CB.

公开(公告)号：US10750181B2

公开(公告)日：2020-08-18

申请号：US15964310

申请日：2018-04-27

Applicant: MEDIATEK INC.

Inventor： Han Huang

IPC: H04N19/13 ,  H04N19/625 ,  H04N19/96 ,  H04N19/174 ,  H04N19/186 ,  H04N19/12 ,  H04N19/176 ,  H04N19/139

Abstract: A method and apparatus for video encoding or decoding performed by a video encoder or a video decoder incorporating advanced multiple transform (AMT) are disclosed. According to this method, a transform set consisting of two type candidates designated as a first type and a second type is determined, where the first type and the second type are different. If AMT is used by the current block, a vertical transform is selected from the transform set and a horizontal transform is selected from the transform set. A transform index, for indicating both vertical transform selection and horizontal transform selection, can be signaled at the encoder side or the transform index is parsed at the decoder side. Another method and apparatus incorporating AMT are also disclosed where the transform set is determined according to the resolution of current MVD.