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    Quantized pulse code modulation in video coding
    21.
    发明授权
    Quantized pulse code modulation in video coding 有权

    公开(公告)号：US10200689B2

    公开(公告)日：2019-02-05

    申请号：US13362928

    申请日：2012-01-31

    申请人： Joel Sole Rojals ,  Marta Karczewicz

    发明人： Joel Sole Rojals ,  Marta Karczewicz

    IPC分类号： H04N7/30 ,  H04N19/124 ,  H04N19/176

    摘要： A quantized PCM mode includes the step of quantizing samples so that distortion is added to coded video. In this way, video blocks coded with quantized PCM appear more uniformly with adjacent video blocks that have been coded with other lossy compression techniques, such as inter-prediction coding or intra-prediction coding. A video encoder may first quantize input video samples with a quantization step prior to PCM coding the quantized samples. This quantization step may be signaled to a decoder in the encoded video bitstream. A video decoder may receive the encoded video bitstream that includes quantized PCM coded video samples. These samples are first decoded using pulse code demodulation and then are inverse quantized with the same quantization step used to encode the video. The video decoder may extract this quantization step from the output bit-depth in the encoded video bitstream.

    COEFFICIENT SCANNING IN VIDEO CODING
    25.
    发明申请
    COEFFICIENT SCANNING IN VIDEO CODING 有权
    系统视频编码中的系统扫描

    公开(公告)号：US20130051475A1

    公开(公告)日：2013-02-28

    申请号：US13551458

    申请日：2012-07-17

    申请人： Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz ,  Yunfei Zheng ,  Xianglin Wang

    发明人： Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz ,  Yunfei Zheng ,  Xianglin Wang

    IPC分类号： H04N7/30

    CPC分类号： H04N19/625 ,  H04N19/129 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/436 ,  H04N19/61

    摘要： In an example, aspects of this disclosure relate to a method for decoding transform coefficients in a video decoding process that includes decoding a one-dimensional array of transform coefficients, and performing a scan on the one-dimensional array of transform coefficients according to a sub-block scan order and a coefficient scan order to produce a block of transform coefficients, where the sub-block scan order comprises an order in which each sub-block of a plurality of sub-blocks within the block is scanned, and where the coefficient scan order comprises an order in which the transform coefficients corresponding to each sub-block of the plurality of sub-blocks are scanned.

    摘要翻译： 在一个示例中，本公开的方面涉及用于解码视频解码处理中的变换系数的方法，该方法包括对变换系数的一维阵列进行解码，以及根据子帧对变换系数的一维阵列执行扫描 块扫描顺序和系数扫描顺序以产生变换系数块，其中子块扫描顺序包括其中扫描块内的多个子块的每个子块的顺序，并且其中系数 扫描顺序包括对与多个子块中的每个子块相对应的变换系数进行扫描的顺序。

    CODING OF LAST SIGNIFICANT TRANSFORM COEFFICIENT
    26.
    发明申请
    CODING OF LAST SIGNIFICANT TRANSFORM COEFFICIENT 有权
    最新重要变换系数的编码

    公开(公告)号：US20130003835A1

    公开(公告)日：2013-01-03

    申请号：US13534332

    申请日：2012-06-27

    申请人： Joel Sole Rojals ,  Wei-Jung Chien ,  Rajan Laxman Joshi ,  Marta Karczewicz

    发明人： Joel Sole Rojals ,  Wei-Jung Chien ,  Rajan Laxman Joshi ,  Marta Karczewicz

    IPC分类号： H04N7/30 ,  H04N7/32

    CPC分类号： H04N19/13 ,  H04N19/129 ,  H04N19/196 ,  H04N19/44 ,  H04N19/463 ,  H04N19/91

    摘要： A video encoder determines that the last significant coefficient (LSC) of a transform coefficient block occurs at a given ordinal position according to a coding scanning order. The video encoder generates a coordinate indicator that specifies the coordinates of a given transform coefficient in the transform coefficient block. The given transform coefficient occurs at the same ordinal position according to an assumed scanning order. A video decoder receives the coordinate indicator and converts the coordinate indicator into a scan-based LSC indicator. The scan-based LSC indicator indicates the ordinal position of the LSC.

    摘要翻译： 视频编码器根据编码扫描顺序确定变换系数块的最后有效系数（LSC）发生在给定的顺序位置处。 视频编码器生成指定变换系数块中的给定变换系数的坐标的坐标指示符。 给定的变换系数根据假定的扫描顺序发生在相同的序数位置。 视频解码器接收坐标指示符并将坐标指示符转换为基于扫描的LSC指示符。 基于扫描的LSC指示符表示LSC的顺序位置。

    CONTEXT-ADAPTIVE CODING VIDEO DATA
    27.
    发明申请
    CONTEXT-ADAPTIVE CODING VIDEO DATA 有权
    背景自适应编码视频数据

    公开(公告)号：US20120328026A1

    公开(公告)日：2012-12-27

    申请号：US13485225

    申请日：2012-05-31

    申请人： Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

    发明人： Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

    IPC分类号： H03M7/00 ,  H04N7/30

    CPC分类号： H03M7/6023 ,  H03M7/4018 ,  H03M7/6011 ,  H04N19/13 ,  H04N19/196 ,  H04N19/436 ,  H04N19/463

    摘要： In an example, aspects of this disclosure relate to a method of coding data that includes coding a sequence of bins according to a context adaptive entropy coding process. A current coding cycle used to code at least one bin of the sequence of bins includes determining a context for the bin; selecting a probability model based on the context, wherein the probability model is updated based on a value of a previous bin coded with the context and coded at least two coding cycles prior to the current coding cycle; applying the probability model to code the bin; and updating the probability model based on a value of the bin

    摘要翻译： 在一个示例中，本公开的方面涉及一种编码数据的方法，所述数据包括根据上下文自适应熵编码处理来对码序列进行编码。 用于对码序列的至少一个bin进行编码的当前编码周期包括确定所述仓的上下文; 基于所述上下文选择概率模型，其中，所述概率模型基于用所述上下文编码的先前存储块的值进行更新，并且在当前编码周期之前编码至少两个编码周期; 应用概率模型对仓进行编码; 并且基于所述仓的值更新所述概率模型

    CODING OF TRANSFORM COEFFICIENTS FOR VIDEO CODING
    28.
    发明申请
    CODING OF TRANSFORM COEFFICIENTS FOR VIDEO CODING 审中-公开
    用于视频编码的变换系数编码

    公开(公告)号：US20120230417A1

    公开(公告)日：2012-09-13

    申请号：US13413472

    申请日：2012-03-06

    申请人： Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

    发明人： Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

    IPC分类号： H04N7/30

    CPC分类号： H04N19/129 ,  H04N19/13 ,  H04N19/136 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18 ,  H04N19/196 ,  H04N19/436 ,  H04N19/463 ,  H04N19/60 ,  H04N19/61 ,  H04N19/619 ,  H04N19/70 ,  H04N19/91

    摘要： This disclosure describes techniques for coding transform coefficients associated with a block of residual video data in a video coding process. Aspects of this disclosure include the selection of a scan order for both significance map coding and level coding, as well as the selection of contexts for entropy coding consistent with the selected scan order. This disclosure proposes a harmonization of the scan order to code both the significance map of the transform coefficients as well as to code the levels of the transform coefficient. It is proposed that the scan order for the significance map should be in the inverse direction (i.e., from the higher frequencies to the lower frequencies). This disclosure also proposes that transform coefficients be scanned in sub-sets as opposed to fixed sub-blocks. In particular, transform coefficients are scanned in a sub-set consisting of a number of consecutive coefficients according to the scan order.

    摘要翻译： 本公开描述了用于编码与视频编码过程中的残留视频数据块相关联的变换系数的技术。 本公开的方面包括选择重要性地图编码和级别编码的扫描顺序，以及与所选择的扫描顺序一致的用于熵编码的上下文的选择。 本公开提出了对扫描顺序进行协调以编码变换系数的重要性图以及对变换系数的等级进行编码。 提出，显着图的扫描顺序应该在相反方向（即，从较高频率到较低频率）。 本公开还提出了与固定子块相反的子集中的变换系数的扫描。 具体地，根据扫描顺序，在由多个连续系数组成的子集中扫描变换系数。

    QUANTIZED PULSE CODE MODULATION IN VIDEO CODING
    29.
    发明申请
    QUANTIZED PULSE CODE MODULATION IN VIDEO CODING 审中-公开
    视频编码中的量化脉冲编码调制

    公开(公告)号：US20120224640A1

    公开(公告)日：2012-09-06

    申请号：US13362928

    申请日：2012-01-31

    申请人： Joel Sole Rojals ,  Marta Karczewicz

    发明人： Joel Sole Rojals ,  Marta Karczewicz

    IPC分类号： H04N7/30

    CPC分类号： H04N19/124 ,  H04N19/176

    摘要： A quantized PCM mode includes the step of quantizing samples so that distortion is added to coded video. In this way, video blocks coded with quantized PCM appear more uniformly with adjacent video blocks that have been coded with other lossy compression techniques, such as inter-prediction coding or intra-prediction coding. A video encoder may first quantize input video samples with a quantization step prior to PCM coding the quantized samples. This quantization step may be signaled to a decoder in the encoded video bitstream. A video decoder may receive the encoded video bitstream that includes quantized PCM coded video samples. These samples are first decoded using pulse code demodulation and then are inverse quantized with the same quantization step used to encode the video. The video decoder may extract this quantization step from the output bit-depth in the encoded video bitstream.

    摘要翻译： 量化PCM模式包括量化样本的步骤，使得失真被添加到编码视频。 以这种方式，用量化PCM编码的视频块与使用其他有损压缩技术（例如帧间预测编码或帧内预测编码）一起编码的相邻视频块更均匀地出现。 视频编码器可以在PCM编码量化样本之前，先用量化步长量化输入视频样本。 该量化步骤可以被发送到编码视频比特流中的解码器。 视频解码器可以接收包括经量化的PCM编码视频样本的编码视频比特流。 首先使用脉冲解码解码这些样本，然后用与编码视频相同的量化步长进行逆量化。 视频解码器可以从编码视频位流中的输出位深度提取该量化步长。