公开(公告)号：US20180098062A1

公开(公告)日：2018-04-05

申请号：US15719333

申请日：2017-09-28

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Jianle Chen ,  Hsiao-Chiang Chuang ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/139 ,  H04N19/176

Abstract: Methods, apparatuses, and computer-readable medium are provided for a frame rate up-conversion coding mode, in which an affine motion model is applied when conducting bilateral matching. The frame rate up-conversion coding mode can include generated additional frames from frames provided in a bitstream. In various implementations, bilateral matching includes, for a current block in a frame that is being generated, identifying a first block in a first reference picture a second block in a second reference picture. Affine (e.g., non-linear) motion information can be determined as between the first block and the second block. The current block can be predicted using the affine motion information.

公开(公告)号：US20180070110A1

公开(公告)日：2018-03-08

申请号：US15697134

申请日：2017-09-06

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/96

CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/134 ,  H04N19/176 ,  H04N19/463 ,  H04N19/593

Abstract: An example device includes a memory to store the video data, and processing circuitry in communication with the memory. The processing circuitry is configured to compare a value of a dimension of a current block of the stored video data to a value of a corresponding dimension of a neighboring block of the current block to obtain a relative dimension value. The processing circuitry is further configured to determine, based on the relative dimension value, that the current block is to be partitioned according to a prediction tree (PT) portion of a multi-type tree-based partitioning scheme. The PT portion comprises partitioning according to one of a binary tree structure or a center-side triple tree structure. The processing circuitry is further configured to partition, based on the determination, the current block according to the PT portion, to form a plurality of sub-blocks.

公开(公告)号：US09906786B2

公开(公告)日：2018-02-27

申请号：US14019468

申请日：2013-09-05

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Jianle Chen ,  Xiang Li ,  Krishnakanth Rapaka

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/50 ,  H04N19/105 ,  H04N19/503 ,  H04N19/176 ,  H04N19/46 ,  H04N19/30 ,  H04N19/593 ,  H04N19/136

CPC classification number: H04N19/46 ,  H04N19/105 ,  H04N19/136 ,  H04N19/176 ,  H04N19/30 ,  H04N19/50 ,  H04N19/503 ,  H04N19/593

Abstract: An apparatus for coding video data according to certain aspects includes a memory and a processor in communication with the memory. The memory is configured to store video information, such as base layer video information and enhancement layer video information. The processor is configured to determine a value of a current video unit of enhancement layer video information based at least on a weighted inter-layer predictor and a weighted intra-layer predictor of at least one color component of the current video unit.

公开(公告)号：US20180014019A1

公开(公告)日：2018-01-11

申请号：US15654580

申请日：2017-07-19

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/136 ,  H04N19/42 ,  H04N19/30 ,  H04N19/186 ,  H04N19/124 ,  H04N19/70 ,  H04N19/105

CPC classification number: H04N19/136 ,  H04N19/105 ,  H04N19/124 ,  H04N19/186 ,  H04N19/30 ,  H04N19/42 ,  H04N19/70

Abstract: Techniques are described for signaling information used to generate three-dimensional (3D) color lookup tables for color gamut scalability in multi-layer video coding. A lower layer of video data may include color data in a first color gamut and a higher layer of the video data may include color data in a second color gamut. To generate inter-layer reference pictures, a video encoder and/or video decoder performs color prediction to convert the color data of a reference picture in the first color gamut to the second color gamut. The video coder may perform color prediction using a 3D lookup table. According to the techniques, a video encoder may encode partition information and/or color values of a 3D lookup table generated for color gamut scalability. A video decoder may decode the partition information and/or color values to generate the 3D lookup table in order to perform color gamut scalability.

公开(公告)号：US20170332095A1

公开(公告)日：2017-11-16

申请号：US15587044

申请日：2017-05-04

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/513 ,  H04N19/44 ,  H04N19/124 ,  H04N19/18 ,  H04N19/91 ,  H04N19/567

CPC classification number: H04N19/513 ,  H04N19/124 ,  H04N19/18 ,  H04N19/44 ,  H04N19/52 ,  H04N19/537 ,  H04N19/567 ,  H04N19/91

Abstract: An example method includes obtaining, for a current block of video data, values of motion vectors (MVs) of an affine motion model of a neighboring block of video data; deriving, from the values of the MVs of the affine motion model of the neighboring block, values of predictors for MVs of an affine motion model of the current block; decoding, from a video bitstream, a representation of differences between the values of the MVs of the affine motion model for the current block and the values of the predictors; determining the values of the MVs of the affine motion model for the current block from the values of the predictors and the decoded differences; determining, based on the determined values of the MVs of the affine motion model for the current block, a predictor block of video data; and reconstructing the current block based on the predictor block.

公开(公告)号：US20170208336A1

公开(公告)日：2017-07-20

申请号：US15404634

申请日：2017-01-12

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Li Zhang ,  Wei-Jung Chien ,  Jianle Chen ,  Xin Zhao ,  Marta Karczewicz

IPC: H04N19/44 ,  H04N19/60 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/105 ,  H04N19/119 ,  H04N19/136 ,  H04N19/172 ,  H04N19/176 ,  H04N19/50 ,  H04N19/60 ,  H04N19/70

Abstract: A method of decoding video data including receiving a bitstream that includes a sequence of bits that forms a representation of a coded picture of the video data, partitioning the coded picture of the video data into a plurality of blocks using three or more different partition structures, and reconstructing the plurality of blocks of the coded picture of the video data. Partitioning the coded picture of the video data may include partitioning the coded picture of the video data into the plurality of blocks using the three or more different partition structures, wherein at least three of the three or more different partition structures may be used at each depth of a tree structure that represents how a particular block of the coded picture of the video data is partitioned.

公开(公告)号：US09686561B2

公开(公告)日：2017-06-20

申请号：US14301205

申请日：2014-06-10

Applicant: QUALCOMM Incorporated

Inventor： Xiang Li ,  Wei Pu ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/80 ,  H04N19/46 ,  H04N19/30 ,  H04N19/186 ,  H04N19/96

CPC classification number: H04N19/46 ,  H04N19/186 ,  H04N19/30 ,  H04N19/80 ,  H04N19/96

Abstract: In one embodiment, an apparatus configured to encode video information includes a memory unit and a processor. The memory unit is configured to store an inter-layer reference picture comprising video information. The processor is operationally coupled to the memory unit. In addition, the processor is configured to partition the inter-layer reference picture into a quadtree structure having a plurality of leafs; determine inter-component filter parameters specific to each individual leaf based upon the video information in each individual leaf and signal the inter-component filter parameters for each of the leafs.

公开(公告)号：US20170150183A1

公开(公告)日：2017-05-25

申请号：US15359568

申请日：2016-11-22

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Xiang Li ,  Jianle Chen ,  Wei-Jung Chien ,  Xin Zhao ,  Marta Karczewicz

IPC: H04N19/91 ,  H04N19/119 ,  H04N19/61

CPC classification number: H04N19/649 ,  G06F17/147 ,  H04N19/105 ,  H04N19/119 ,  H04N19/122 ,  H04N19/124 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/42 ,  H04N19/573 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593 ,  H04N19/597 ,  H04N19/61 ,  H04N19/625 ,  H04N19/82 ,  H04N19/91 ,  H04N19/96

Abstract: As part of a process of encoding video data, a video encoder applies a transform to a non-square residual block to generate a block of transform coefficients. Furthermore, the video encoder modifies the transform coefficients such that each respective transform coefficient of the block of transform coefficients is based on the respective dequantized transform coefficient multiplied by a factor of √{square root over (2)} or an approximation of √{square root over (2)}. As part of a process of decoding video data, a video decoder applies, by the video decoder, a dequantization process to transform coefficients of a non-square transform block. The video decoder modifies the dequantized transform coefficients such that each respective dequantized transform coefficient of the dequantized transform coefficients is based on the respective dequantized transform coefficient divided by a factor of √{square root over (2)} or an approximation of √{square root over (2)}.

公开(公告)号：US09584808B2

公开(公告)日：2017-02-28

申请号：US14184633

申请日：2014-02-19

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Jianle Chen ,  Ye-Kui Wang ,  Xiang Li

IPC: H04N7/12 ,  H04N19/105 ,  H04N19/70 ,  H04N19/134 ,  H04N19/187 ,  H04N19/29 ,  H04N19/33

CPC classification number: H04N19/105 ,  H04N19/134 ,  H04N19/187 ,  H04N19/29 ,  H04N19/33 ,  H04N19/70

Abstract: An apparatus configured to code video information includes a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with a reference layer (RL) and an enhancement layer, the RL comprising an RL picture having an output region that includes a portion of the RL picture. The processor is configured to determine whether a condition indicates that information outside of the output region is available to predict a current block in the enhancement layer. The processor may encode or decode the video information.

Abstract translation: 被配置为对视频信息进行编码的装置包括与存储器单元通信的存储器单元和处理器。 存储器单元被配置为存储与参考层（RL）和增强层相关联的视频信息，RL包括具有包括RL图像的一部分的输出区域的RL图像。 处理器被配置为确定条件是否指示输出区域之外的信息可用于预测增强层中的当前块。 处理器可以对视频信息进行编码或解码。

公开(公告)号：US20160360235A1

公开(公告)日：2016-12-08

申请号：US15175944

申请日：2016-06-07

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Xiang Li ,  Joel Sole Rojals ,  Marta Karczewicz ,  Sungwon Lee ,  Dmytro Rusanovskyy ,  Done Bugdayci Sansli

IPC: H04N19/86 ,  H04N19/615 ,  H04N19/147 ,  H04N19/13 ,  H04N19/587 ,  H04N19/105 ,  H04N19/96 ,  H04N19/187 ,  H04N19/119

CPC classification number: H04N19/86 ,  H04N19/103 ,  H04N19/105 ,  H04N19/119 ,  H04N19/13 ,  H04N19/147 ,  H04N19/176 ,  H04N19/186 ,  H04N19/187 ,  H04N19/30 ,  H04N19/36 ,  H04N19/50 ,  H04N19/587 ,  H04N19/615 ,  H04N19/96

Abstract: Techniques are described for identifying and reducing the incidence of artifacts in video using color gamut scalability (CGS) parameters and tables in scalable video coding (SVC). Derivation of CGS mapping tables are performed for each partition of pixel values in a color space. The pixel value domain is split into partitions and each is optimized independently. Color prediction techniques for CGS may be used by video encoders and/or video decoders to generate inter-layer reference pictures when a color gamut for a lower layer of video data is different than a color gamut for a higher layer of the video data. When mapped values are used as inter-layer predication references for the enhancement layer blocks, artifacts may appear in some frames of the sequences. A video encoder may identify blocks that potentially contain these artifacts and disable inter-layer prediction in those identified blocks.

Abstract translation: 描述了使用可缩放视频编码（SVC）中的色域可伸缩性（CGS）参数和表来识别和减少视频中伪像的发生率的技术。 对颜色空间中的像素值的每个分区执行CGS映射表的推导。 像素值域被分割成分区，并且各自被独立地优化。 当用于较低层视频数据的色域不同于用于较高层视频数据的色域时，CGS的颜色预测技术可被视频编码器和/或视频解码器用于生成层间参考图像。 当映射值用作增强层块的层间预测引用时，伪像可能出现在序列的某些帧中。 视频编码器可以标识潜在地包含这些伪像并且在那些识别的块中禁用层间预测的块。