公开(公告)号：US20140161189A1

公开(公告)日：2014-06-12

申请号：US14098369

申请日：2013-12-05

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N19/51

CPC classification number: H04N19/31 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/136 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/577 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70

Abstract: In an example, a method of coding video data includes determining, for a first block of video data in a first layer of video data, a temporal motion vector and associated temporal reference picture for predicting the first block, where the temporal reference picture has a picture order count value. The method also includes determining a disparity reference block in a disparity reference picture indicated by a disparity vector associated with the first block, and determining whether a decoded picture buffer contains a temporal-disparity reference picture in the second view and having the picture order count value of the temporal reference picture. When the decoded picture buffer does not contain a temporal-disparity reference picture in the second view and having the picture order count value of the temporal reference picture, the method includes modifying an inter-view residual prediction process for predicting residual data of the first block.

Abstract translation: 在一个示例中，视频数据的编码方法包括：对第一视频数据层中的视频数据的第一块确定用于预测第一块的时间运动矢量和相关联的时间参考图像，其中时间参考图片具有 图片顺序计数值。 该方法还包括确定由与第一块相关联的视差矢量指示的视差参考画面中的视差参考块，以及确定解码图像缓冲器是否包含第二视图中的时间 - 视差参考图像，并具有图像顺序计数值 的时间参考图片。 当解码图像缓冲器在第二视图中不包含时间 - 视差参考图像并且具有时间参考图像的图像顺序计数值时，该方法包括修改用于预测第一块的残差数据的视图间残差预测处理 。

公开(公告)号：US20130155184A1

公开(公告)日：2013-06-20

申请号：US13720622

申请日：2012-12-19

Applicant: Qualcomm Incorporated

Inventor： Ying Chen ,  Ye-Kui Wang ,  Li Zhang

IPC: H04N7/26 ,  H04N13/00

CPC classification number: H04N19/50 ,  H04N13/161 ,  H04N13/349 ,  H04N19/124 ,  H04N19/44 ,  H04N19/597 ,  H04N19/91

Abstract: A video encoder generates, based on a reference picture set of a current view component, a reference picture list for the current view component. The reference picture set includes an inter-view reference picture set. The video encoder encodes the current view component based at least in part on one or more reference pictures in the reference picture list. In addition, the video encoder generates a bitstream that includes syntax elements indicating the reference picture set of the current view component. A video decoder parses, from the bitstream, syntax elements indicating the reference picture set of the current view component. The video decoder generates, based on the reference picture set, the reference picture list for the current view component. In addition, the video decoder decodes at least a portion of the current view component based on one or more reference pictures in the reference picture list.

公开(公告)号：US20130128965A1

公开(公告)日：2013-05-23

申请号：US13678374

申请日：2012-11-15

Applicant: Qualcomm Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/50 ,  H04N19/00 ,  H04N19/103 ,  H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/157 ,  H04N19/167 ,  H04N19/51 ,  H04N19/53 ,  H04N19/597

Abstract: The techniques of this disclosure may be generally related to using motion information for a corresponding block from a texture view component that corresponds with a block in a depth view component in coding the block in the depth view component. In some examples, for coding purposes, the techniques may use motion information when the spatial resolution of the texture view component is different than the spatial resolution of the depth view component.

Abstract translation: 本公开的技术通常可以与在深度视图组件中对块进行编码时使用与深度视图组件中的块相对应的纹理视图组件的相应块的运动信息相关。 在一些示例中，为了编码的目的，当纹理视图组件的空间分辨率不同于深度视图组件的空间分辨率时，技术可以使用运动信息。

公开(公告)号：US11689740B2

公开(公告)日：2023-06-27

申请号：US17454456

申请日：2021-11-10

Applicant: QUALCOMM Incorporated

Inventor： Yi-Wen Chen ,  Wei-Jung Chien ,  Yu-Chen Sun ,  Li Zhang ,  Sungwon Lee ,  Xiang Li ,  Hsiao-Chiang Chuang ,  Jianle Chen ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/52 ,  H04N19/70 ,  H04N19/44 ,  H04N19/176 ,  H04N19/54 ,  H04N19/593

CPC classification number: H04N19/52 ,  H04N19/176 ,  H04N19/44 ,  H04N19/54 ,  H04N19/70 ,  H04N19/593

Abstract: A video coder may determine a motion vector of a non-adjacent block of a current picture of the video data. The non-adjacent block is non-adjacent to a current block of the current picture. Furthermore, the video coder determines, based on the motion vector of the non-adjacent block, a motion vector predictor (MVP) for the current block. The video coder may determine a motion vector of the current block. The video coder may also determine a predictive block based on the motion vector of the current block.

公开(公告)号：US11503333B2

公开(公告)日：2022-11-15

申请号：US16762777

申请日：2018-11-14

Applicant: Qualcomm Incorporated

Inventor： Kai Zhang ,  Jianle Chen ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/56 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70

Abstract: A video decoder including one or more processors configured to receive one or more bits, in a bitstream, that indicate the encoded current block of video data was encoded based on a unified candidate list that includes motion vector candidates based on one or more translational motion vectors, and motion vector candidates based on one or more affine motion vectors. A merge index represented in the bitstream may indicate which candidate in the unified candidate list is associated with the motionvector of the encoded current block of video data. Based on the merge index, the one or more processors are configured to select one or more motion vectors of a candidate from the unified candidate list, based on the merge index, where the candidate has one or more of the motion vectors corresponding to the translational motion vectors or affine motion vectors within the unified candidate list.

公开(公告)号：US11297340B2

公开(公告)日：2022-04-05

申请号：US16820152

申请日：2020-03-16

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/44 ,  H04N19/513 ,  H04N19/577 ,  H04N19/573 ,  H04N19/176 ,  H04N19/523 ,  H04N19/56 ,  H04N19/52

Abstract: A method of decoding video data includes constructing, by a video decoder implemented in processing circuitry, a candidate list of motion vector information for a portion of a current frame. The method includes receiving, by the video decoder, signaling information indicating starting motion vector information of the candidate list of motion vector information, the starting motion vector information indicating an initial position in a reference frame. The method includes refining, by the video decoder, based on one or more of bilateral matching or template matching, the starting motion vector information to determine refined motion vector information indicating a refined position in the reference frame that is within a search range from the initial position. The method includes generating, by the video decoder, a predictive block based on the refined motion vector information and decoding, by the video decoder, the current frame based on the predictive block.

公开(公告)号：US11172229B2

公开(公告)日：2021-11-09

申请号：US16244843

申请日：2019-01-10

Applicant: QUALCOMM Incorporated

Inventor： Kai Zhang ,  Wei-Jung Chien ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/615 ,  H04N19/52 ,  H04N19/433 ,  H04N19/105 ,  H04N19/139 ,  H04N19/119 ,  H04N19/176 ,  H04N19/51

Abstract: An example device for coding video data is configured to determine that a block of the video data includes a plurality of sub-blocks, each of the sub-blocks having respective motion information referring to respective reference blocks in a reference picture in a memory, determine a single reference block of the reference picture, the single reference block including each of the respective reference blocks, wherein determining the single reference block comprises: determine four corner sub-blocks of the block included in the plurality of sub-blocks; and determine the single reference block according to the respective motion information for the four corner sub-blocks such that corners of the single reference block correspond to corners of the respective reference blocks of the four corner sub-blocks, retrieve data of the single reference block from the reference picture, and predict the sub-blocks from the respective reference blocks using the data of the single reference block.

公开(公告)号：US11152953B2

公开(公告)日：2021-10-19

申请号：US16805636

申请日：2020-02-28

Applicant: QUALCOMM Incorporated

Inventor： Afshin Haftbaradaran ,  Ming Ta Lin ,  Shravan Kumar Reddy Garlapati ,  Alessandro Risso ,  Alexandre Pierrot ,  Harsha Narasimha Acharya ,  Subramanya Rao ,  Li Zhang

IPC: H03M13/09 ,  G06F1/3287 ,  H03M13/27 ,  H03M13/13

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a first device may transmit a signal to a second device including a number of error detection bits interleaved with a number of information bits. The second device may use the error detection bits to determine if the signal was received correctly, where each error detection bit may be associated with a set of information bits. The second device may progressively decode the signal and continuously perform an error detection calculation based on a first set of information bits associated with a first error detection bit. Based on the error detection calculation, the second device may calculate an expected error detection bit corresponding to the first error detection bit. The second device may compare the first error detection bit to the expected error detection bit. Other aspects and features are also claimed and described.

公开(公告)号：US11082687B2

公开(公告)日：2021-08-03

申请号：US16601486

申请日：2019-10-14

Applicant: QUALCOMM Incorporated

Inventor： Yi-Wen Chen ,  Wei-Jung Chien ,  Li Zhang ,  Yu-Chen Sun ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/139 ,  H04N19/52 ,  H04N19/537

Abstract: A video decoder selects a source affine block. The source affine block is an affine-coded block that spatially neighbors a current block. Additionally, the video decoder extrapolates motion vectors of control points of the source affine block to determine motion vector predictors for control points of the current block. The video decoder inserts, into an affine motion vector predictor (MVP) set candidate list, an affine MVP set that includes the motion vector predictors for the control points of the current block. The video decoder also determines, based on an index signaled in a bitstream, a selected affine MVP set in the affine MVP set candidate list. The video decoder obtains, from the bitstream, motion vector differences (MVDs) that indicate differences between motion vectors of the control points of the current block and motion vector predictors in the selected affine MVP set.

公开(公告)号：US11070810B2

公开(公告)日：2021-07-20

申请号：US14656526

申请日：2015-03-12

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Jianle Chen ,  Marta Karczewicz ,  Joel Sole Rojals ,  Woo-Shik Kim

IPC: H04N19/126 ,  H04N19/186 ,  H04N19/60 ,  H04N19/154 ,  H04N19/196 ,  H04N19/134 ,  H04N19/102 ,  H04N19/14 ,  H04N19/157 ,  H04N19/184 ,  H04N19/103 ,  H04N19/176 ,  H04N19/33 ,  H04N19/44 ,  H04N19/61 ,  H04N19/11 ,  H04N19/12 ,  H04N19/136 ,  H04N19/18 ,  H04N19/70

Abstract: In general, this disclosure describes techniques for coding video blocks using a color-space conversion process. A video coder, such as a video encoder or a video decoder, may determine a bit-depth of a luma component of the video data and a bit-depth of a chroma component of the video data. In response to the bit-depth of the luma component being different than the bit depth of the chroma component, the video coder may modify one or both of the bit depth of the luma component and the bit depth of the chroma component such that the bit depths are equal. The video coder may further apply the color-space transform process in encoding the video data.