Motion-compensated prediction of inter-layer residuals
    13.
    发明申请
    Motion-compensated prediction of inter-layer residuals 有权
    层间残差运动补偿预测

    公开(公告)号:US20090238279A1

    公开(公告)日:2009-09-24

    申请号:US12077768

    申请日:2008-03-21

    IPC分类号: H04N7/34 H04N7/26

    摘要: Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an encoding tool encodes base layer video and outputs encoded base layer video in a base layer bit stream. The encoding tool encodes inter-layer residual video (representing differences between input video and reconstructed base layer video) using motion compensation relative to previously reconstructed inter-layer residual video. For the inter-layer residual video, the encoding tool outputs motion information and motion-compensated prediction residuals in an enhancement layer bit stream. A decoding tool receives the base layer bit stream and enhancement layer bit stream, reconstructs base layer video, reconstructs inter-layer residual video, and combines the reconstructed base layer video and reconstructed inter-layer residual video. Using motion compensation for the inter-layer residual video facilitates the use of separate motion vectors and separate codecs for the base layer video and inter-layer residual video.

    摘要翻译: 描述了可扩展视频编码和解码的技术和工具。 在一些实施例中,编码工具对基层视频进行编码并在基层比特流中输出经编码的基层视频。 编码工具使用相对于先前重建的层间残留视频的运动补偿来编码层间残差视频(表示输入视频和重建的基本层视频之间的差异)。 对于层间残差视频,编码工具在增强层比特流中输出运动信息和运动补偿预测残差。 解码工具接收基层比特流和增强层比特流,重构基层视频,重建层间残留视频,并组合重建的基层视频和重建层间残留视频。 对于层间残留视频使用运动补偿有助于使用单独的运动矢量和单独的编解码器用于基本层视频和层间残留视频。

    DC COEFFICIENT SIGNALING AT SMALL QUANTIZATION STEP SIZES
    14.
    发明申请
    DC COEFFICIENT SIGNALING AT SMALL QUANTIZATION STEP SIZES 有权
    直流系数小信号步进尺寸信号

    公开(公告)号:US20100246671A1

    公开(公告)日:2010-09-30

    申请号:US12815029

    申请日:2010-06-14

    IPC分类号: H04N7/26

    摘要: Described tools and techniques relate to signaling for DC coefficients at small quantization step sizes. The techniques and tools can be used in combination or independently. For example, a tool such as a video encoder or decoder processes a VLC that indicates a DC differential for a DC coefficient, a FLC that indicates a value refinement for the DC differential, and a third code that indicates the sign for the DC differential. Even with the small quantization step sizes, the tool uses a VLC table with DC differentials for DC coefficients above the small quantization step sizes. The FLCs for DC differentials have lengths that vary depending on quantization step size.

    摘要翻译: 描述的工具和技术涉及在小量化步长下用于DC系数的信令。 技术和工具可以组合使用或独立使用。 例如,诸如视频编码器或解码器的工具处理指示DC系数的DC差分的VLC,指示DC差分的值细化的FLC以及指示DC差分的符号的第三代码。 即使使用较小的量化步长,该工具也会使用具有DC系数的直流差分的VLC表,其高于小量化步长。 用于DC差分的FLC具有随量化步长变化的长度。

    Signaling coding and display options in entry point headers
    16.
    发明授权
    Signaling coding and display options in entry point headers 有权
    入口点标题中的信号编码和显示选项

    公开(公告)号:US07924921B2

    公开(公告)日:2011-04-12

    申请号:US10989845

    申请日:2004-11-15

    摘要: A decoder receives an entry point header comprising plural control parameters for an entry point segment corresponding to the entry point header. The entry point header is in an entry point layer of a bitstream comprising plural layers. The decoder decodes the entry point header. The plural control parameters can include various combinations of control parameters such as a pan scan on/off parameter, a reference frame distance on/off parameter, a loop filtering on/off parameter, a fast chroma motion compensation on/off parameter, an extended range motion vector on/off parameter, a variable sized transform on/off parameter, an overlapped transform on/off parameter, a quantization decision parameter, and an extended differential motion vector coding on/off parameter, a broken link parameter, a closed entry parameter, one or more coded picture size parameters, one or more range mapping parameters, a hypothetical reference decoder buffer parameter, and/or other parameter(s).

    摘要翻译: 解码器接收包括与入口点标题相对应的入口点段的多个控制参数的入口点标题。 入口点头在包含多个层的比特流的入口点层中。 解码器解码入口点标题。 多个控制参数可以包括控制参数的各种组合,例如平移扫描开启/关闭参数,参考帧距离开/关参数,循环滤波开/关参数,快速色度运动补偿开/关参数,扩展 范围运动矢量开/关参数,可变大小的变换开/关参数,重叠变换开/关参数,量化决定参数和扩展差分运动矢量编码开/关参数,断链接参数,关闭条目 参数,一个或多个编码图像大小参数,一个或多个范围映射参数,假设参考解码器缓冲器参数和/或其他参数。

    Signaling coding and display options in entry point headers
    18.
    发明申请
    Signaling coding and display options in entry point headers 有权
    入口点标题中的信号编码和显示选项

    公开(公告)号:US20050123274A1

    公开(公告)日:2005-06-09

    申请号:US10989845

    申请日:2004-11-15

    IPC分类号: G11C7/00 H04N5/783 H04N7/12

    摘要: A decoder receives an entry point header comprising plural control parameters for an entry point segment corresponding to the entry point header. The entry point header is in an entry point layer of a bitstream comprising plural layers. The decoder decodes the entry point header. The plural control parameters can include various combinations of control parameters such as a pan scan on/off parameter, a reference frame distance on/off parameter, a loop filtering on/off parameter, a fast chroma motion compensation on/off parameter, an extended range motion vector on/off parameter, a variable sized transform on/off parameter, an overlapped transform on/off parameter, a quantization decision parameter, and an extended differential motion vector coding on/off parameter, a broken link parameter, a closed entry parameter, one or more coded picture size parameters, one or more range mapping parameters, a hypothetical reference decoder buffer parameter, and/or other parameter(s).

    摘要翻译: 解码器接收包括与入口点标题相对应的入口点段的多个控制参数的入口点标题。 入口点头在包含多个层的比特流的入口点层中。 解码器解码入口点标题。 多个控制参数可以包括控制参数的各种组合,例如平移扫描开启/关闭参数,参考帧距离开/关参数,循环滤波开/关参数,快速色度运动补偿开/关参数,扩展 范围运动矢量开/关参数,可变大小的变换开/关参数,重叠变换开/关参数,量化决定参数和扩展差分运动矢量编码开/关参数,断链接参数,关闭条目 参数,一个或多个编码图像大小参数,一个或多个范围映射参数,假设参考解码器缓冲器参数和/或其他参数。

    MULTI-LEVEL REPRESENTATION OF REORDERED TRANSFORM COEFFICIENTS
    19.
    发明申请
    MULTI-LEVEL REPRESENTATION OF REORDERED TRANSFORM COEFFICIENTS 有权
    多级变换系数的多级表示

    公开(公告)号:US20120243615A1

    公开(公告)日:2012-09-27

    申请号:US13458774

    申请日:2012-04-27

    IPC分类号: H04N7/26

    摘要: Techniques and tools for encoding and decoding a block of frequency coefficients are presented. An encoder selects a scan order from multiple available scan orders and then applies the selected scan order to a two-dimensional matrix of transform coefficients, grouping non-zero values of the frequency coefficients together in a one-dimensional string. The encoder entropy encodes the one-dimensional string of coefficient values according to a multi-level nested set representation. In decoding, a decoder entropy decodes the one-dimensional string of coefficient values from the multi-level nested set representation. The decoder selects the scan order from among multiple available scan orders and then reorders the coefficients back into a two-dimensional matrix using the selected scan order.

    摘要翻译: 提出了用于编码和解码频率系数块的技术和工具。 编码器从多个可用扫描顺序中选择扫描顺序,然后将所选择的扫描顺序应用于变换系数的二维矩阵,将频率系数的非零值在一维串中分组。 编码器根据多级嵌套集合表示对一维系列值串进行编码。 在解码中,解码器熵从多级嵌套集合表示解码系数值的一维串。 解码器从多个可用扫描顺序中选择扫描顺序,然后使用所选择的扫描顺序将系数重新排序成二维矩阵。

    Skip modes for inter-layer residual video coding and decoding
    20.
    发明授权
    Skip modes for inter-layer residual video coding and decoding 有权
    跳过模式进行层间残留视频编码和解码

    公开(公告)号:US08213503B2

    公开(公告)日:2012-07-03

    申请号:US12205689

    申请日:2008-09-05

    IPC分类号: H04N7/12

    摘要: Techniques and tools for skip modes in encoding and decoding of inter-layer residual video are described. For example, an encoder encodes multiple macroblocks of a picture of inter-layer residual video. For a current macroblock that is skipped, the encoder selects a skip mode from among multiple available skip modes and uses the selected skip mode when encoding the current macroblock. The skip modes can include intra skip mode and predicted-motion skip mode. A corresponding decoder, for the current macroblock, selects and uses the skip mode for the current macroblock during decoding. As another example, an encoder encodes multiple channels of a picture of inter-layer residual video. For each channel, the encoder determines whether to skip the channel. The encoder signals channel skip information to indicate which channels are skipped. A corresponding decoder parses the channel skip information and determines on a channel-by-channel basis whether to skip the respective channels.

    摘要翻译: 描述了层间残差视频编码和解码中跳过模式的技术和工具。 例如,编码器编码层间残留视频的图像的多个宏块。 对于跳过的当前宏块,编码器从多个可用跳过模式中选择跳过模式,并且在对当前宏块进行编码时使用所选择的跳过模式。 跳过模式可以包括帧内跳过模式和预测运动跳过模式。 对于当前宏块,对应的解码器在解码期间选择并使用当前宏块的跳过模式。 作为另一示例,编码器对层间残留视频的图像的多个信道进行编码。 对于每个通道,编码器确定是否跳过通道。 编码器信号通道跳过信息以指示哪些通道被跳过。 相应的解码器解析信道跳过信息,并且逐个信道地确定是否跳过相应的信道。