公开(公告)号：US20180249155A1

公开(公告)日：2018-08-30

申请号：US15755200

申请日：2016-09-06

Applicant: MEDIATEK INC.

Inventor： Chih-Wei HSU ,  Ching-Yeh CHEN ,  Han HUANG

IPC: H04N19/105 ,  H04N19/182

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/182 ,  H04N19/196 ,  H04N19/503 ,  H04N19/51 ,  H04N19/593 ,  H04N19/82

Abstract: A method and apparatus of video coding using Inter prediction with offset derived from neighbouring reconstructed pixels are disclosed. According to the present invention, the NRP (neighbouring reconstructed pixels) in one or more first neighbouring areas of a current block and the EMCP (extended motion-compensated predictors) in one or more second neighbouring areas of a motion-compensated reference block corresponding to the current block are determined. One or more prediction offsets between first pixel values of the NRP and second pixel values of the EMCP are determined. The current block is encoded or decoded using information including the prediction offset(s). The prediction offset may correspond to a single offset used for a whole block. Individual offsets may also be used the pixels of the current block.

公开(公告)号：US20210014536A1

公开(公告)日：2021-01-14

申请号：US16977158

申请日：2019-03-13

Applicant: MEDIATEK INC.

Inventor： Chun-Chia CHEN ,  Chia-Ming TSAI ,  Yu-Chi SU ,  Chen-Yen LAI ,  Chih-Wei HSU ,  Ching-Yeh CHEN ,  Tzu-Der CHUANG ,  Yu-Wen HUANG ,  Han HUANG

IPC: H04N19/70 ,  H04N19/64 ,  H04N19/66 ,  H04N19/89 ,  H04N19/174

Abstract: In one method, the current block is partitioned into multiple final sub-blocks using one or more stages of sub-tree partition comprising ternary tree partition and at least one other-type partition, where ternary partition tree is excluded from the sub-tree partition if a current sub-tree depth associated with a current sub-block is greater than a first threshold and the first threshold is an integer greater than or equal to 1. In another method, if a test condition is satisfied, the current block is encoded or decoded using a current Inter mode selected from a modified group of Inter tools, where the modified group of Inter tools is derived from an initial group of Inter tools by removing one or more first Inter tools from the initial group of Inter tools, replacing one or more second Inter tools with one or more complexity-reduced Inter tools, or both.

公开(公告)号：US20180139444A1

公开(公告)日：2018-05-17

申请号：US15812160

申请日：2017-11-14

Applicant: MEDIATEK INC.

Inventor： Han HUANG ,  Shan LIU

IPC: H04N19/119 ,  H04N19/176 ,  H04N19/196 ,  H04N19/159 ,  H04N19/122

CPC classification number: H04N19/119 ,  H04N19/122 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196

Abstract: A method and apparatus for video coding using flexible quadtree and binary tree block partition are disclosed. According to this method, a current block is partitioned into multiple final sub-blocks using one or more stages of quadtree partitioning and binary tree partitioning, where at least one sub-block is generated by applying the quadtree partitioning to one previous sub-block generated by the binary tree partitioning. According to another method, one or more horizontal splitting flags and one or more vertical splitting flags are used for determining block partition of the current block into multiple sub-blocks using one or more stages of quadtree partitioning and binary tree partitioning. Multiple sub-blocks partitioned from the current block are determined according to the horizontal splitting flags and the vertical splitting flags. The multiple sub-blocks are then encoded or decoded.

公开(公告)号：US20200228821A1

公开(公告)日：2020-07-16

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

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：US20180338154A1

公开(公告)日：2018-11-22

申请号：US15966570

申请日：2018-04-30

Applicant: MEDIATEK INC.

Inventor： Han HUANG ,  Xiaozhong Xu ,  Tzu-Der Chuang

IPC: H04N19/517 ,  H04N19/105 ,  H04N19/176

Abstract: Aspects of the disclosure include a video decoding device that includes a processing circuit. The processing circuit is configured to receive encoded video data associated with a current block of a current image frame, determine a set of candidate motion vectors for the current block, determine a selection index based on the encoded video data, and select one of the set of candidate motion vectors based on the selection index. The processing circuit is further configured to refine the selected candidate motion vector to become a reconstructed motion vector when the selected candidate motion vector meets a predetermined condition, and generate an image of the current image frame for output, including generating a reconstructed image of the current block based on the reconstructed motion vector.

公开(公告)号：US20180131969A1

公开(公告)日：2018-05-10

申请号：US15806632

申请日：2017-11-08

Applicant: MEDIATEK INC.

Inventor： Han HUANG ,  Shan LIU ,  Chih-Wei HSU

IPC: H04N19/86 ,  H04N19/176 ,  H04N19/117 ,  H04N19/196 ,  H04N19/167 ,  H04N19/105

Abstract: Aspects of the disclosure provide a method of video coding includes receiving input data associated with a first block and a second block of an image frame. The method further includes identifying a reference size and performing a deblocking process if it is determined that the deblocking process is to be performed. The preforming the deblocking process may include processing pixels adjacent to the block boundary using a first set of deblocking filter settings if a first block size of the first block and a second block size of the second block are greater than the reference size, and processing the pixels using a second set of deblocking filter settings if the first block size or the second block size is not greater than the reference size.

公开(公告)号：US20180077417A1

公开(公告)日：2018-03-15

申请号：US15700215

申请日：2017-09-11

Applicant: MEDIATEK INC.

Inventor： Han HUANG

IPC: H04N19/157 ,  H04N19/105 ,  H04N19/119

CPC classification number: H04N19/157 ,  H04N19/105 ,  H04N19/119 ,  H04N19/147 ,  H04N19/176 ,  H04N19/70 ,  H04N19/96

Abstract: A method and apparatus for video coding using block partition are disclosed. According to the present invention, if a target block in the current image unit is generated from a first block partition as well as a second block partition, the coding information reuse is applied. According to the coding information reuse, a first set of coding parameters is determined for the target block generated from the first block partition. A second set of coding parameters is determined for the target block generated from the second block partition by reusing at least one encoder coding decision by the target block generated from the second block partition.

公开(公告)号：US20200322602A1

公开(公告)日：2020-10-08

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

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：US20190273923A1

公开(公告)日：2019-09-05

申请号：US16319917

申请日：2017-07-26

Applicant: MEDIATEK INC.

Inventor： Han HUANG ,  Ching-Yeh CHEN ,  Tzu-Der CHUANG ,  Yu-Wen HUANG

IPC: H04N19/124 ,  H04N19/96 ,  H04N19/176 ,  H04N19/174

Abstract: Processing methods and apparatuses for video data comprise receiving input data associated with a current coding block (CB) in a current slice, deriving a top-left location of a current quantization group containing the current CB using a recursive process or a tracking process, and determining a reference quantization parameter (QP) according to the top-left location of the current quantization group. The current CB is encoded or decoded according to the reference QP. The reference QP may be further derived based on a previous QP determined by a tracking method.

公开(公告)号：US20190082191A1

公开(公告)日：2019-03-14

申请号：US16083662

申请日：2017-03-13

Applicant: MEDIATEK INC.

Inventor： Tzu-Der CHUANG ,  Ching-Yeh CHEN ,  Han HUANG ,  Xiaozhong XU ,  Shan LIU

IPC: H04N19/513 ,  H04N19/58 ,  H04N19/119 ,  H04N19/176

Abstract: A method and apparatus for video encoding and decoding with affine motion compensation are disclosed. An embodiment of the method receives input data associated with a current block coded or to be coded in an affine mode. Two or more motion vectors of a neighboring block are retrieved from a buffer, where at least one of the retrieved motion vectors is not corresponding to a sub-block in a first neighboring block row or a first neighboring block column. The method derives an affine candidate including affine motion vectors using the retrieved two or more motion vectors, and encodes or decodes the current block by predicting the current block using one or more motion compensated blocks by the derived affine candidate. The buffer for affine candidate derivation stores selective motion vectors less than all motion vectors of coded blocks in the current picture.