公开(公告)号：US20180262773A1

公开(公告)日：2018-09-13

申请号：US15919060

申请日：2018-03-12

Applicant: QUALCOMM Incorporated

Inventor： Hsiao-Chiang Chuang ,  Jianle Chen ,  Yi-Wen Chen ,  Xiang Li ,  Marta Karczewicz ,  Wei-Jung Chien

IPC: H04N19/543 ,  H04N19/517 ,  H04N19/61 ,  H04N19/107 ,  H04N19/20 ,  H04N19/30 ,  H04N19/577 ,  H04N19/70 ,  H04N5/14

Abstract: A video decoder can be configured to determine that a block of video data is encoded using a bi-directional inter prediction mode; determine that the block of video data is encoded using a bi-directional optical flow (BIO) process; inter predict the block of video data according to the bi-directional inter prediction mode; perform the BIO process for the block, wherein performing the BIO process for the block comprises determining a single motion vector refinement for a group of pixels in the block, wherein the group of pixels comprises at least two pixels; refine the group of pixels based on the single motion vector refinement; and output a BIO refined predictive block of video data comprising the refined group of pixels.

公开(公告)号：US20180098079A1

公开(公告)日：2018-04-05

申请号：US15713075

申请日：2017-09-22

Applicant: QUALCOMM Incorporated

Inventor： Hsiao-Chiang Chuang ,  Jianle Chen ,  Xiang Li ,  Kai Zhang ,  Done Bugdayci Sansli ,  Marta Karczewicz ,  Wei-Jung Chien ,  Yu-Chen Sun

IPC: H04N19/43 ,  H04N19/176 ,  H04N19/553 ,  H04N19/186 ,  H04N19/577

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/126 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/198 ,  H04N19/43 ,  H04N19/44 ,  H04N19/51 ,  H04N19/553 ,  H04N19/577 ,  H04N19/61 ,  H04N19/625

Abstract: Techniques and systems are provided for processing video data. For example, a current block of a picture of the video data can be obtained for processing by an encoding device or a decoding device. A parameter of the current block can be determined. Based on the determined parameter of the current block, at least one or more of a number of rows of samples or a number columns of samples in a template of the current block and at least one or more of a number of rows of samples or a number columns of samples in a template of a reference picture can be determined. Motion compensation for the current block can be performed. For example, one or more local illumination compensation parameters can be derived for the current block using the template of the current block and the template of the reference picture.

公开(公告)号：US20180063527A1

公开(公告)日：2018-03-01

申请号：US15691287

申请日：2017-08-30

Applicant: QUALCOMM Incorporated

Inventor： Yi-Wen Chen ,  Wei-Jung Chien ,  Li Zhang ,  Hsiao-Chiang Chuang ,  Marta Karczewicz

IPC: H04N19/117 ,  H04N19/186 ,  H04N19/124 ,  H04N19/513 ,  H04N19/182

CPC classification number: H04N19/117 ,  H04N19/124 ,  H04N19/182 ,  H04N19/186 ,  H04N19/513 ,  H04N19/635 ,  H04N19/80 ,  H04N19/82

Abstract: A video coding device generates first and second components of a current picture. Additionally, the video coding device determines a first parameter and a second parameter. The first and second parameters are each based on a value of a current sample in the first component. The video coding device applies a cross-component filter to the current sample, thereby determining a filtered value of the current sample based on the first parameter, the second parameter, and one or more cross-component samples. Each of the one or more cross-component samples is in the second component.

公开(公告)号：US20170238015A1

公开(公告)日：2017-08-17

申请号：US15486156

申请日：2017-04-12

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Muhammed Zeyd Coban ,  Peisong Chen ,  Hsiao-Chiang Chuang ,  Rajan Laxman Joshi

IPC: H04N19/61 ,  H04N19/11 ,  H04N19/122 ,  H04N19/129 ,  H04N19/96 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/194 ,  H04N19/13

CPC classification number: H04N19/61 ,  H04N19/11 ,  H04N19/122 ,  H04N19/129 ,  H04N19/13 ,  H04N19/132 ,  H04N19/14 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/194 ,  H04N19/196 ,  H04N19/46 ,  H04N19/593 ,  H04N19/60 ,  H04N19/85 ,  H04N19/96

Abstract: In one example, an apparatus for encoding video data includes a video encoder configured to select an intra-prediction mode to use to encode a block of video data, determine whether the block includes a sub-block of a size for which multiple transforms are possible based on the size of the sub-block and the selected intra-prediction mode, when the block includes the sub-block of the size for which multiple transforms are possible based on the size of the sub-block and the selected intra-prediction mode, select one of the multiple possible transforms, transform the sub-block using the selected one of the multiple possible transforms, and provide an indication of the selected one of the multiple possible transforms for the size of the block.