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    Scalable video coding/multiplexing compatible with non-scalable decoders
    1.
    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

    申请人： Barin Geoffry Haskell ,  David William Singer ,  Thomas Pun ,  Hsi-Jung Wu ,  James Oliver Normile

    发明人： Barin Geoffry Haskell ,  David William Singer ,  Thomas Pun ,  Hsi-Jung Wu ,  James Oliver Normile

    IPC分类号： H04B1/66 ,  H04N7/12

    CPC分类号： H04N19/30 ,  H04N19/132 ,  H04N19/187 ,  H04N19/196 ,  H04N19/33 ,  H04N19/46 ,  H04N19/61 ,  H04N21/234327 ,  H04N21/2389 ,  H04N21/2662 ,  H04N21/4385 ,  H04N21/64792 ,  H04N21/6582 ,  H04N21/8451

    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
    3.
    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

    申请人： Hsi-Jung Wu ,  Barin Geoffry Haskell ,  Xiaojin Shi ,  James Oliver Normile

    发明人： Hsi-Jung Wu ,  Barin Geoffry Haskell ,  Xiaojin Shi ,  James Oliver Normile

    IPC分类号： H04N7/12

    CPC分类号： H04N19/44 ,  H04N19/149 ,  H04N19/152

    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。

    Multi-pass video encoding based on different quantization parameters
    4.
    发明授权
    Multi-pass video encoding based on different quantization parameters 有权
    基于不同量化参数的多通道视频编码

    公开(公告)号：US08406293B2

    公开(公告)日：2013-03-26

    申请号：US11118616

    申请日：2005-04-28

    申请人： Xin Tong ,  Hsi Jung Wu ,  Thomas Pun ,  Adriana Dumitras ,  Barin Geoffry Haskell ,  Jim Normile

    发明人： Xin Tong ,  Hsi Jung Wu ,  Thomas Pun ,  Adriana Dumitras ,  Barin Geoffry Haskell ,  Jim Normile

    IPC分类号： H04N7/12

    CPC分类号： H04N19/00193 ,  H04N19/00 ,  H04N19/152 ,  H04N19/194

    摘要： A novel multi-pass encoding method that encodes several images (e.g., several frames of a video sequence) is described. The method iteratively performs an encoding operation that encodes these images. The encoding operation is based on a nominal quantization parameter, which the method uses to compute quantization parameter for the images. During several different iterations of the encoding operation, the method uses several different nominal quantization parameters. The method stops its iterations when it reaches a terminating criterion (e.g., it identifies an acceptable encoding of the images).

    摘要翻译： 描述了对几个图像（例如，视频序列的几个帧）进行编码的新型多遍编码方法。 该方法迭代地执行编码这些图像的编码操作。 编码操作基于标称量化参数，该方法用于计算图像的量化参数。 在编码操作的几个不同迭代期间，该方法使用几个不同的标称量化参数。 该方法在达到终止标准（例如，它识别图像的可接受编码）时停止迭代。

    Multi-pass video encoding solution for buffer underflow
    5.
    发明授权
    Multi-pass video encoding solution for buffer underflow 有权
    用于缓冲区下溢的多路视频编码解决方案

    公开(公告)号：US08811475B2

    公开(公告)日：2014-08-19

    申请号：US13437931

    申请日：2012-04-03

    申请人： Xin Tong ,  Hsi Jung Wu ,  Thomas Pun ,  Adriana Dumitras ,  Barin Geoffry Haskell ,  Jim Normile

    发明人： Xin Tong ,  Hsi Jung Wu ,  Thomas Pun ,  Adriana Dumitras ,  Barin Geoffry Haskell ,  Jim Normile

    IPC分类号： H04N7/12 ,  H04N7/26

    CPC分类号： H04N19/00193 ,  H04N19/00 ,  H04N19/152 ,  H04N19/194

    摘要： A method of encoding a sequence of video images is described. The method receives the sequence of video images. The method iteratively examines different encoding solutions for the sequence of video images to identify an encoding solution that optimizes image quality while meeting a target bit rate and satisfying a set of constraints regarding flow of encoded data through an input buffer of a hypothetical reference decoder for decoding the encoded video sequence. The iterative examining includes, for each encoding solution, determining whether the hypothetical reference decoder underflows while processing the encoding solution for any set of images within the video sequence.

    摘要翻译： 描述了对视频图像序列进行编码的方法。 该方法接收视频图像序列。 该方法迭代地检查视频图像序列的不同编码解决方案，以识别优化图像质量同时满足目标比特率并且通过用于解码的假设参考解码器的输入缓冲器满足编码数据流的一组约束的编码解决方案 编码视频序列。 对于每个编码解决方案，迭代检查包括在处理视频序列内的任何图像集合的编码解决方案的同时确定假想参考解码器是否下溢。

    MULTI-PASS VIDEO ENCODING
    6.
    发明申请
    MULTI-PASS VIDEO ENCODING 有权
    多通道视频编码

    公开(公告)号：US20120250761A1

    公开(公告)日：2012-10-04

    申请号：US13437931

    申请日：2012-04-03

    申请人： Xin Tong ,  Hsi Jung Wu ,  Thomas Pun ,  Adriana Dumitras ,  Barin Geoffry Haskell ,  Jim Normile

    发明人： Xin Tong ,  Hsi Jung Wu ,  Thomas Pun ,  Adriana Dumitras ,  Barin Geoffry Haskell ,  Jim Normile

    IPC分类号： H04N7/26

    CPC分类号： H04N19/00193 ,  H04N19/00 ,  H04N19/152 ,  H04N19/194

    摘要： Some embodiments of the invention provide a multi-pass encoding method that encodes several images (e.g., several frames of a video sequence). The method iteratively performs an encoding operation that encodes these images. The encoding operation is based on a nominal quantization parameter, which the method uses to compute quantization parameters for the images. During several different iterations of the encoding operation, the method uses several different nominal quantization parameters. The method stops its iterations when it reaches a terminating criterion (e.g., it identifies an acceptable encoding of the images).

    摘要翻译： 本发明的一些实施例提供了对多个图像（例如，视频序列的几个帧）进行编码的多遍编码方法。 该方法迭代地执行编码这些图像的编码操作。 编码操作基于标称量化参数，该方法用于计算图像的量化参数。 在编码操作的几个不同迭代期间，该方法使用几个不同的标称量化参数。 该方法在达到终止标准（例如，它识别图像的可接受编码）时停止迭代。

    Video bit rate control method
    8.
    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

    申请人： Xin Tong ,  Barin Geoffry Haskell ,  Hsi-Jung Wu

    发明人： Xin Tong ,  Barin Geoffry Haskell ,  Hsi-Jung Wu

    IPC分类号： H04N7/12

    CPC分类号： H04N19/198 ,  H04N19/124 ,  H04N19/146 ,  H04N19/152 ,  H04N19/172 ,  H04N19/177 ,  H04N19/192 ,  H04N19/196 ,  H04N19/61

    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。