知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

241 records (took 0.032 seconds)

    STORAGE AND SIGNALING RESOLUTIONS OF MOTION VECTORS
    71.
    发明申请
    STORAGE AND SIGNALING RESOLUTIONS OF MOTION VECTORS 审中-公开
    运动矢量的存储和信号分析

    公开(公告)号：US20160337662A1

    公开(公告)日：2016-11-17

    申请号：US15151429

    申请日：2016-05-10

    Applicant: QUALCOMM Incorporated

    Inventor： Chao Pang ,  Krishnakanth Rapaka ,  Vadim Seregin ,  Marta Karczewicz ,  Rajan Laxman Joshi

    IPC: H04N19/52 ,  H04N19/182 ,  H04N19/176

    CPC classification number: H04N19/52 ,  H04N19/176 ,  H04N19/182 ,  H04N19/42 ,  H04N19/513 ,  H04N19/523 ,  H04N19/70

    Abstract: An example method of decoding video data includes obtaining, from a video bitstream, a representation of a difference between a motion vector (MV) predictor and a MV that identifies a predictor block for a current block of video data in a current picture; obtaining, from the video bitstream, a syntax element indicating whether adaptive motion vector resolution (AMVR) is used for the current block; determining, based on the representation of the difference between the MV predictor and the MV that identifies the predictor block, a value of the MV; storing the value of the MV at fractional-pixel resolution regardless of whether AMVR is used for the current block and regardless of whether the predictor block is included in the current picture; determining, based on the value of the stored MV, pixel values of the predictor block; and reconstructing the current block based on the pixel values of the predictor block.

    Abstract translation: 解码视频数据的示例性方法包括从视频比特流获得运动矢量（MV）预测器和标识当前图像中的当前视频数据块的预测块的MV之间的差异的表示; 从视频比特流获取指示对当前块使用自适应运动矢量分辨率（AMVR）的语法元素; 基于MV预测器和识别预测器块的MV之间的差异的表示来确定MV的值; 无论是否将AMVR用于当前块而不管预测块是否包含在当前图像中，都以分数像素分辨率存储MV的值; 基于所存储的MV的值来确定预测器块的像素值; 并且基于预测器块的像素值来重建当前块。

    RATE-CONSTRAINED FALLBACK MODE FOR DISPLAY STREAM COMPRESSION
    72.
    发明申请
    RATE-CONSTRAINED FALLBACK MODE FOR DISPLAY STREAM COMPRESSION 审中-公开
    用于显示流压缩的速率约束倒带模式

    公开(公告)号：US20160301950A1

    公开(公告)日：2016-10-13

    申请号：US15078792

    申请日：2016-03-23

    Applicant: QUALCOMM Incorporated

    Inventor： Natan Haim Jacobson ,  Vijayaraghavan Thirumalai ,  Rajan Laxman Joshi

    IPC: H04N19/593 ,  H04N19/174 ,  H04N19/11 ,  H04N19/186 ,  H04N19/159 ,  H04N19/625 ,  H04N19/61 ,  H04N19/423 ,  H04N19/112 ,  H04N19/147 ,  H04N19/124

    CPC classification number: H04N19/593 ,  G09G5/006 ,  G09G5/026 ,  G09G2340/02 ,  G09G2340/06 ,  G09G2360/127 ,  H04N19/11 ,  H04N19/112 ,  H04N19/124 ,  H04N19/147 ,  H04N19/15 ,  H04N19/159 ,  H04N19/174 ,  H04N19/186 ,  H04N19/423 ,  H04N19/61 ,  H04N19/625

    Abstract: A method and apparatus for coding video information are disclosed. In one example, the method may involve: identifying one or more prediction modes for a fixed-rate codec, each prediction mode having a rate-distortion cost; and selecting, for a current block, a prediction mode that has the lowest rate-distortion cost from among the one more prediction modes not previously selected. The method may involve: (i) determining whether the selected prediction mode would result in overflow or underflow of a buffer of the fixed-rate codec; and (ii) determining whether the selected prediction mode would result in remaining bits in the slice being insufficient to code remaining blocks of the slice. The method may involve utilizing a fallback mode to code the current block in response to each of the selected one or more prediction modes resulting in at least one of conditions (i) and (ii) being true.

    Abstract translation: 公开了一种用于编码视频信息的方法和装置。 在一个示例中，该方法可以包括：识别固定速率编解码器的一个或多个预测模式，每个预测模式具有速率失真成本; 并且对于当前块，从未预先选择的多个预测模式中选择具有最低速率失真成本的预测模式。 该方法可以包括：（i）确定所选择的预测模式是否将导致固定速率编解码器的缓冲器的溢出或下溢; 和（ii）确定所选择的预测模式是否会导致切片中的剩余比特不足以对切片的剩余块进行编码。 该方法可以包括利用回退模式来响应于所选择的一个或多个预测模式中的每一个来对当前块进行编码，导致条件（i）和（ii）中的至少一个为真。

    COMPLEX REGION DETECTION FOR DISPLAY STREAM COMPRESSION
    73.
    发明申请
    COMPLEX REGION DETECTION FOR DISPLAY STREAM COMPRESSION 有权
    显示流程压缩的复杂区域检测

    公开(公告)号：US20160301933A1

    公开(公告)日：2016-10-13

    申请号：US15078797

    申请日：2016-03-23

    Applicant: QUALCOMM Incorporated

    Inventor： Natan Haim Jacobson ,  Vijayaraghavan Thirumalai ,  Rajan Laxman Joshi

    IPC: H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/174

    CPC classification number: H04N19/14 ,  H04N19/124 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61

    Abstract: A method and apparatus for detecting a complex region of an image are disclosed. In one example, the method may involve calculating complexity values for a current block, a next block, and a previous block. The method may involve: (i) detecting that the previous complexity value is less than a first threshold value, and that the next complexity value is greater than a second threshold value; and (ii) determining that neither a transition to the current block nor a transition to the previous block is a flat-to-complex region transition. The method may involve detecting a flat-to-complex region transition when transitioning to the next block in response to (i) and (ii).

    Abstract translation: 公开了一种用于检测图像的复杂区域的方法和装置。 在一个示例中，该方法可以包括计算当前块，下一个块和先前块的复杂度值。 该方法可以包括：（i）检测先前复杂度值小于第一阈值，并且下一个复杂度值大于第二阈值; 和（ii）确定既不转移到当前块也不转移到先前块是既不是一个平面到复杂的区域转换。 该方法可以涉及当响应于（i）和（ii）转移到下一个块时检测平坦到复杂区域转变。

    PALETTE MODE CODING
    76.
    发明申请
    PALETTE MODE CODING 有权
    PALETTE模式编码

    公开(公告)号：US20160150234A1

    公开(公告)日：2016-05-26

    申请号：US14952438

    申请日：2015-11-25

    Applicant: QUALCOMM Incorporated

    Inventor： Rajan Laxman Joshi ,  Liwei Guo ,  Marta Karczewicz ,  Wei Pu ,  Joel Sole Rojals

    IPC: H04N19/176 ,  H04N19/184 ,  H04N19/13 ,  H04N19/103

    CPC classification number: H04N19/176 ,  H04N19/13 ,  H04N19/157 ,  H04N19/593

    Abstract: A device for decoding video data may be configured to determine a block of the video data is coded using a palette-based coding mode; determine a sample of the block of video data is coded using a copy from top mode or an index mode; and decode a greater than zero flag to indicate whether a run value is greater than zero, wherein the run value specifies a number of samples subsequent to the sample that have a same mode as the sample.

    Abstract translation: 用于解码视频数据的装置可以被配置为使用基于调色板的编码模式来确定视频数据的块被编码; 使用从顶部模式或索引模式的副本来确定视频数据块的样本被编码; 并且解码大于零的标志以指示运行值是否大于零，其中运行值指定样本之后的采样数与采样具有相同模式的样本数。

    Coded black flag coding for 4:2:2 sample format in video coding
    77.
    发明授权
    Coded black flag coding for 4:2:2 sample format in video coding 有权
    视频编码中4：2：2采样格式的编码黑标编码

    公开(公告)号：US09332257B2

    公开(公告)日：2016-05-03

    申请号：US14038524

    申请日：2013-09-26

    Applicant: QUALCOMM Incorporated

    Inventor： Rajan Laxman Joshi ,  Liwei Guo ,  Marta Karczewicz

    IPC: H04N7/30 ,  H04N19/593 ,  H04N19/176 ,  H04N19/70 ,  H04N19/96 ,  H04N19/11 ,  H04N19/186 ,  H04N19/645

    CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/176 ,  H04N19/186 ,  H04N19/645 ,  H04N19/70 ,  H04N19/96

    Abstract: Systems, methods, and devices for video coding that may obtain a rectangular chroma block having first and second square sub-blocks are disclosed. These systems, methods, and devices may also decode a first coded block flag (CBF) for the first square sub-block to indicate whether the first square sub-block includes at least one nonzero transform coefficient. These systems, methods, and devices may also decode a second CBF for the second square sub-block to indicate whether the second square sub-block includes at least one nonzero transform coefficient and not decoding a CBF for the rectangular chroma block.

    Abstract translation: 公开了可获得具有第一和第二平方子块的矩形色度块的用于视频编码的系统，方法和装置。 这些系统，方法和设备还可以解码用于第一平方子块的第一编码块标志（CBF），以指示第一平方子块是否包括至少一个非零变换系数。 这些系统，方法和设备还可以解码用于第二平方子块的第二CBF，以指示第二平方子块是否包括至少一个非零变换系数，并且不解码矩形色度块的CBF。

    EXPLICIT SIGNALING OF ESCAPE SAMPLE POSITIONS IN PALETTE CODING MODE FOR VIDEO CODING
    79.
    发明申请
    EXPLICIT SIGNALING OF ESCAPE SAMPLE POSITIONS IN PALETTE CODING MODE FOR VIDEO CODING 审中-公开
    用于视频编码的PALETTE编码模式中的ESCAPE样本位置的显式信号

    公开(公告)号：US20160094852A1

    公开(公告)日：2016-03-31

    申请号：US14869581

    申请日：2015-09-29

    Applicant: QUALCOMM Incorporated

    Inventor： Rajan Laxman Joshi ,  Vadim Seregin ,  Wei Pu ,  Marta Karczewicz ,  Feng Zou

    IPC: H04N19/186 ,  H04N19/13 ,  H04N19/93 ,  H04N19/176 ,  H04N19/103

    CPC classification number: H04N19/186 ,  H04N19/103 ,  H04N19/13 ,  H04N19/176 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93

    Abstract: A method of decoding video data, the method comprising receiving a run-length sequence indicative of a binary vector, the binary vector comprising indications of locations of escape samples in a block of video data encoded using a palette-based coding mode, decoding the run-length sequence to obtain the binary vector, and decoding the block of video data using the binary vector. The method of claim 1 may further comprise receiving palette entries for the block of video data receiving one or more escape samples, and receiving a plurality of flags indicating the palette mode for each respective pixel in the block of video data.

    Abstract translation: 一种解码视频数据的方法，所述方法包括接收指示二进制向量的游程长度序列，所述二进制向量包括使用基于调色板的编码模式编码的视频数据块中的转义样本的位置的指示， 长度序列来获得二进制向量，并使用二进制向量解码视频数据块。 权利要求1的方法还可以包括接收用于接收一个或多个转义样本的视频数据块的调色板条目，以及接收指示视频数据块中每个相应像素的调色板模式的多个标志。

    Rotation of prediction residual blocks in video coding with transform skipping
    80.
    发明授权
    Rotation of prediction residual blocks in video coding with transform skipping 有权
    视频编码中的预测残差块的旋转与转换跳跃

    公开(公告)号：US09264713B2

    公开(公告)日：2016-02-16

    申请号：US13939037

    申请日：2013-07-10

    Applicant: QUALCOMM Incorporated

    Inventor： Rajan Laxman Joshi ,  Marta Karczewicz

    IPC: H04N11/02 ,  H04N19/61 ,  H04N19/159 ,  H04N19/176 ,  H04N19/129 ,  H04N19/14 ,  H04N19/88 ,  H04N19/46

    CPC classification number: H04N19/61 ,  H04N19/129 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/88

    Abstract: Techniques are described for coding residual data of a prediction residual block with transform skipping. A transform may be skipped for a residual block when the residual block is coded using either a lossless coding mode or a lossy coding mode in a transform skip mode. According to the techniques, based on a transform being skipped for a residual block, a rotation unit included in a video encoder or a video decoder determines whether to rotate the residual block prior to coding residual data of the residual block. In some examples, a rotation value may be explicitly signaled between the video encoder and the video decoder. In other examples, the video encoder and the video decoder may each independently determine whether to rotate the residual block based on a type of boundary at two or more edges of the residual block.

    Abstract translation: 描述了用于利用变换跳过对预测残差块的残差数据进行编码的技术。 当在变换跳过模式中使用无损编码模式或有损编码模式对残差块进行编码时，可以跳过残差块的变换。 根据该技术，基于对于残差块跳过的变换，包括在视频编码器或视频解码器中的旋转单元确定在编码残差块的残差数据之前是否旋转残差块。 在一些示例中，旋转值可以在视频编码器和视频解码器之间明确地发出信号。 在其他示例中，视频编码器和视频解码器可以各自独立地基于残差块的两个或多个边缘处的边界类型来独立地确定是否旋转残余块。

Patent Agency Ranking