VIDEO CODING USING MAPPED TRANSFORMS AND SCANNING MODES
    1.
    发明申请
    VIDEO CODING USING MAPPED TRANSFORMS AND SCANNING MODES 审中-公开
    使用映射变换和扫描模式进行视频编码

    公开(公告)号:US20120170649A1

    公开(公告)日:2012-07-05

    申请号:US13336682

    申请日:2011-12-23

    IPC分类号: H04N7/50 H04N7/30

    摘要: A video encoder may transform residual data by using a transform selected from a group of transforms. The transform is applied to the residual data to create a two-dimensional array of transform coefficients. A scanning mode is selected to scan the transform coefficients in the two-dimensional array into a one-dimensional array of transform coefficients. The combination of transform and scanning mode may be selected from a subset of combinations that is based on an intra-prediction mode. The scanning mode may also be selected based on the transform used to create the two-dimensional array. The transforms and/or scanning modes used may be signaled to a video decoder.

    摘要翻译: 视频编码器可以通过使用从一组变换中选择的变换来变换残差数据。 将变换应用于残差数据以创建变换系数的二维阵列。 选择扫描模式以将二维阵列中的变换系数扫描成变换系数的一维阵列。 可以从基于帧内预测模式的组合的子集中选择变换和扫描模式的组合。 也可以基于用于创建二维阵列的变换来选择扫描模式。 所使用的变换和/或扫描模式可以被通知给视频解码器。

    COEFFICIENT SCANNING IN VIDEO CODING
    8.
    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

    IPC分类号: H04N7/30

    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。

    APPLYING NON-SQUARE TRANSFORMS TO VIDEO DATA
    10.
    发明申请
    APPLYING NON-SQUARE TRANSFORMS TO VIDEO DATA 有权
    将非正方形变换应用于视频数据

    公开(公告)号:US20130003824A1

    公开(公告)日:2013-01-03

    申请号:US13422828

    申请日:2012-03-16

    IPC分类号: H04N7/30 H04N7/32 H04N11/02

    摘要: In one example, a device for coding video data includes a video coder, such as a video encoder or a video decoder, that is configured to code information indicative of whether a transform unit of the video data is square or non-square, and code data of the transform unit based at least in part on whether the transform unit is square or non-square. In this manner, the video coder may utilize non-square transform units. The video coder may be configured to use non-square transform units for certain situations, such as only for chrominance or luminance components or only when a corresponding prediction unit is non-square. The video coder may further be configured to perform an entropy coding process that selects context for coding data of the transform unit based on whether the transform unit is square or non-square.

    摘要翻译: 在一个示例中,用于编码视频数据的设备包括诸如视频编码器或视频解码器的视频编码器,其被配置为对指示视频数据的变换单元是正方形还是非正方形的信息进行编码,以及代码 所述变换单元的数据至少部分地基于所述变换单元是平方还是非正方形。 以这种方式,视频编码器可以利用非正方形变换单元。 视频编码器可以被配置为在诸如仅用于色度或亮度分量的某些情况下使用非平方变换单元,或者仅当对应的预测单元是非正方形时才使用。 视频编码器还可以被配置为执行熵编码处理,其基于变换单元是正方形还是非正方形来选择用于对变换单元的数据进行编码的上下文。