H.264/AVC coder incorporating rate and quality controller
    3.
    发明授权
    H.264/AVC coder incorporating rate and quality controller 有权
    H.264 / AVC编码器并入速率和质量控制器

    公开(公告)号:US07986731B2

    公开(公告)日:2011-07-26

    申请号:US10811983

    申请日:2004-03-30

    IPC分类号: H04N7/12

    摘要: A rate control system is disclosed for video coding applications. The rate controller assigns a quantization parameter for video data in a picture in response to complexity indicators indicative of spatial complexity, motion complexity and/or bits per pel of the picture. A virtual buffer based quantizer parameter is proposed based on a virtual buffer fullness analysis and a target rate estimate, which is derived from the complexity indicators. A second quantizer parameter is proposed from a linear regression analysis of quantizer parameters used to code previously coded pictures of similar type (e.g., I pictures, P pictures or B pictures). A coding policy decision unit defines a final quantizer parameter from a comparison of the two proposed quantizer parameters.

    摘要翻译: 公开了一种用于视频编码应用的速率控制系统。 速率控制器响应于表示图像的空间复杂度,运动复杂度和/或每像素的复杂度指示符,为图像中的视频数据分配量化参数。 基于虚拟缓冲区丰满度分析和目标速率估计提出了一种基于虚拟缓冲器的量化器参数,该参数是从复杂性指标中得出的。 从用于对先前编码的类似类型的图像(例如,I图像,P图像或B图像)进行编码的量化器参数的线性回归分析提出了第二量化参数。 编码策略决定单元根据两个提出的量化器参数的比较来定义最终的量化器参数。

    H.264/AVC coder incorporating rate and quality controller
    4.
    发明申请
    H.264/AVC coder incorporating rate and quality controller 有权
    H.264 / AVC编码器并入速率和质量控制器

    公开(公告)号:US20050175092A1

    公开(公告)日:2005-08-11

    申请号:US10811983

    申请日:2004-03-30

    IPC分类号: H04N7/12 H04N7/26 H04N7/50

    摘要: A rate control system is disclosed for video coding applications. The rate controller assigns a quantization parameter for video data in a picture in response to complexity indicators indicative of spatial complexity, motion complexity and/or bits per pel of the picture. A virtual buffer based quantizer parameter is proposed based on a virtual buffer fullness analysis and a target rate estimate, which is derived from the complexity indicators. A second quantizer parameter is proposed from a linear regression analysis of quantizer parameters used to code previously coded pictures of similar type (e.g., I pictures, P pictures or B pictures). A coding policy decision unit defines a final quantizer parameter from a comparison of the two proposed quantizer parameters.

    摘要翻译: 公开了一种用于视频编码应用的速率控制系统。 速率控制器响应于表示图像的空间复杂度,运动复杂度和/或每像素的复杂度指示符,为图像中的视频数据分配量化参数。 基于虚拟缓冲区丰满度分析和目标速率估计提出了一种基于虚拟缓冲器的量化器参数,该参数是从复杂性指标中得出的。 从用于对先前编码的类似类型的图像(例如,I图像,P图像或B图像)进行编码的量化器参数的线性回归分析提出了第二量化参数。 编码策略决定单元根据两个提出的量化器参数的比较来定义最终的量化器参数。

    Rate and quality controller for H.264/AVC video coder and scene analyzer therefor
    5.
    发明授权
    Rate and quality controller for H.264/AVC video coder and scene analyzer therefor 有权
    H.264 / AVC视频编码器和场景分析仪的速率和质量控制器

    公开(公告)号:US07869503B2

    公开(公告)日:2011-01-11

    申请号:US10811982

    申请日:2004-03-30

    IPC分类号: H04N7/12

    摘要: A rate control system is disclosed for video coding applications. The rate controller assigns a quantization parameter for video data in a picture in response to complexity indicators indicative of spatial complexity, motion complexity and/or bits per pel of the picture. A virtual buffer based quantizer parameter is proposed based on a virtual buffer fullness analysis and a target rate estimate, which is derived from the complexity indicators. A second quantizer parameter is proposed from a linear regression analysis of quantizer parameters used to code previously coded pictures of similar type (e.g., I pictures, P pictures or B pictures). A coding policy decision unit defines a final quantizer parameter from a comparison of the two proposed quantizer parameters.

    摘要翻译: 公开了一种用于视频编码应用的速率控制系统。 速率控制器响应于表示图像的空间复杂度,运动复杂度和/或每像素的复杂度指示符,为图像中的视频数据分配量化参数。 基于虚拟缓冲区丰满度分析和目标速率估计提出了一种基于虚拟缓冲器的量化器参数,该参数是从复杂性指标中得出的。 从用于对先前编码的类似类型的图像(例如,I图像,P图像或B图像)进行编码的量化器参数的线性回归分析提出了第二量化参数。 编码策略决定单元根据两个提出的量化器参数的比较来定义最终的量化器参数。

    Scalable video coding/multiplexing compatible with non-scalable decoders
    7.
    发明申请
    Scalable video coding/multiplexing compatible with non-scalable decoders 有权
    可扩展视频编码/复用与不可扩展解码器兼容

    公开(公告)号:US20070217503A1

    公开(公告)日:2007-09-20

    申请号:US11710183

    申请日:2007-02-23

    IPC分类号: H04B1/66 H04N7/12

    摘要: Scalable video coding and multiplexing compatible with non-scalable decoders is disclosed. In some embodiments, video data is received and encoded in a manner that renders at least a base layer to be compatible with a non-scalable video encoding standard, including by assigning for at least the base layer default values to one or more scalability parameters. In some embodiments, video data is received and encoded to produce an encoded video data that includes a base layer that conforms to a non-scalable video encoding standard and one or more subordinate non-scalable layers, which subordinate non-scalable layers do not by themselves conform to the non-scalable video encoding standard but which can be combined with the base layer to produce a result that does conform to the non-scalable video encoding standard, such that the result can be decoded by a non-scalable decoder. An identification data identifying those portions of the encoded video data that are associated with a subordinate non-scalable layer is included in the encoded video data.

    摘要翻译: 公开了与不可扩展解码器兼容的可扩展视频编码和复用。 在一些实施例中,视频数据以使至少基本层与不可扩展视频编码标准兼容的方式被接收和编码,包括通过将至少基本层默认值分配给一个或多个可伸缩性参数。 在一些实施例中,视频数据被接收和编码以产生编码的视频数据,该编码视频数据包括符合不可分级视频编码标准的基本层和一个或多个从属非可缩放层,其中不可扩展层不由 它们符合不可扩展视频编码标准,但可以与基本层组合以产生符合非可分级视频编码标准的结果,使得结果可以由不可扩展解码器解码。 识别与下级不可缩放层相关联的编码视频数据部分的识别数据被包括在编码视频数据中。

    Hypothetical reference decoder
    8.
    发明授权
    Hypothetical reference decoder 有权
    假设参考解码器

    公开(公告)号:US08345774B2

    公开(公告)日:2013-01-01

    申请号:US12013094

    申请日:2008-01-11

    IPC分类号: H04N7/12

    摘要: Disclosed is a system and method of controlling a video decoder, including a reviewing channel data representing coded video data generated by an encoder to identify parameters of a hypothetical reference decoder (HRD) used by the encoder during coding operations. A parameter representing an exit data rate requirement of a coded picture buffer (CPB) of the HRD is compared against exit rate performance of the video decoder. If the exit rate performance of the video coder matches the exit rate requirement of the HRD, the coded video data is decoded, otherwise, a certain decoding degradation scheme can be applied, including disabling decoder from decoding the coded video data.

    摘要翻译: 公开了一种控制视频解码器的系统和方法,包括:代表由编码器产生的编码视频数据的查看频道数据,以识别由编码器在编码操作期间使用的假设参考解码器(HRD)的参数。 将表示HRD的编码图像缓冲器(CPB)的退出数据速率要求的参数与视频解码器的退出速率性能进行比较。 如果视频编码器的退出速率性能与HRD的退出率要求相匹配,则编码的视频数据被解码,否则可以应用某种解码劣化方案,包括禁止解码器解码编码的视频数据。

    Video bit rate control method
    10.
    发明授权
    Video bit rate control method 有权
    视频比特率控制方法

    公开(公告)号:US08295343B2

    公开(公告)日:2012-10-23

    申请号:US11473248

    申请日:2006-06-23

    IPC分类号: H04N7/12

    摘要: This invention is directed to a video bit rate control method for encoding a video sequence based on a decoder buffer condition and a group of picture (GOP) size limitation of the encoded video sequence. The method includes iteratively adjusting a quantization parameter and/or a masking strength parameter and encoding the video sequence at the adjusted parameters until the buffer condition and GOP size limitation are satisfied. The method makes the above adjustments to avoid buffer underflow and GOP oversizing.

    摘要翻译: 本发明涉及一种视频比特率控制方法,用于根据解码器缓冲器条件和编码视频序列的一组图像(GOP)尺寸限制对视频序列进行编码。 该方法包括迭代地调整量化参数和/或掩蔽强度参数,并以调整的参数对视频序列进行编码,直到满足缓冲条件和GOP大小限制。 该方法进行上述调整,以避免缓冲区下溢和GOP超大。