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    SYSTEM AND METHOD FOR PROVIDING ERROR RESILIENCE, RANDOM ACCESS AND RATE CONTROL IN SCALABLE VIDEO COMMUNICATIONS
    47.
    发明申请
    SYSTEM AND METHOD FOR PROVIDING ERROR RESILIENCE, RANDOM ACCESS AND RATE CONTROL IN SCALABLE VIDEO COMMUNICATIONS 有权
    用于提供可扩展视频通信中的错误恢复，随机访问和速率控制的系统和方法

    公开(公告)号：US20140285616A1

    公开(公告)日：2014-09-25

    申请号：US14225043

    申请日：2014-03-25

    申请人： Vidyo, Inc.

    发明人： Alexandros Eleftheriadis ,  Danny Hong ,  Ofer Shapiro ,  Thomas Wiegand

    IPC分类号： H04N7/15 ,  H04N19/33

    CPC分类号： H04N7/15 ,  H04N19/29 ,  H04N19/30 ,  H04N19/31 ,  H04N19/33 ,  H04N19/36 ,  H04N19/44 ,  H04N19/593 ,  H04N19/65 ,  H04N19/89 ,  H04N19/895

    摘要： Systems and methods for error resilient transmission, rate control, and random access in video communication systems that use sealable video coding are provided. Error resilience is obtained by using information from low resolution layers to conceal or compensate loss of high resolution layer information. The same mechanism is used for rate control by selectively eliminating high resolution layer information from transmitted signals, which elimination can be compensated at the receiver using information from low resolution layers. Further, random access or switching between low and high resolutions is also achieved by using information from low resolution layers to compensate for high resolution spatial layer packets that may have not been received prior to the switching time.

    摘要翻译： 提供了使用可密封视频编码的视频通信系统中的错误弹性传输，速率控制和随机接入的系统和方法。 通过使用低分辨率层的信息来隐藏或补偿高分辨率层信息的损失，可以获得错误恢复能力。 相同的机制用于速率控制，通过选择性地从发射信号中消除高分辨率层信息，该消除可以在接收机处使用来自低分辨率层的信息进行补偿。 此外，通过使用来自低分辨率层的信息来补偿在切换时间之前可能未被接收的高分辨率空间层分组，也可以实现低分辨率和高分辨率之间的随机存取或切换。

    ENCODING DEVICE, ENCODING METHOD, DECODING DEVICE, AND DECODING METHOD
    48.
    发明申请
    ENCODING DEVICE, ENCODING METHOD, DECODING DEVICE, AND DECODING METHOD 审中-公开
    编码设备，编码方法，解码设备和解码方法

    公开(公告)号：US20140247890A1

    公开(公告)日：2014-09-04

    申请号：US14150063

    申请日：2014-01-08

    申请人： Kabushiki Kaisha Toshiba

    发明人： Jun YAMAGUCHI ,  Tomoya KODAMA ,  Akiyuki TANIZAWA

    IPC分类号： H04N19/117 ,  H04N19/137 ,  H04N19/184 ,  H04N19/80

    CPC分类号： H04N19/172 ,  H04N19/117 ,  H04N19/146 ,  H04N19/154 ,  H04N19/36

    摘要： According to an embodiment, an encoding device includes a first encoder, a filter processor, a difference image generating unit, and a second encoder. The first encoder encodes an input image by a first encoding process to obtain first encoded data. The filter processor filters a first decoded image included in the first encoded data by cutting off a specific frequency band of frequency components to obtain a base image. The difference image generating unit generates a difference image between the input image and the base image. The second encoder encodes the difference image by a second encoding process to obtain second encoded data.

    摘要翻译： 根据实施例，编码装置包括第一编码器，滤波处理器，差分图像生成单元和第二编码器。 第一编码器通过第一编码处理对输入图像进行编码，以获得第一编码数据。 滤波器处理器通过切断频率分量的特定频带来对包含在第一编码数据中的第一解码图像进行滤波以获得基本图像。 差分图像生成单元生成输入图像和基本图像之间的差分图像。 第二编码器通过第二编码处理对差分图像进行编码，以获得第二编码数据。

    Enhancement layer residual prediction for bit depth scalability using hierarchical LUTs
    50.
    发明授权
    Enhancement layer residual prediction for bit depth scalability using hierarchical LUTs 有权
    使用分层LUT的位深度可扩展性的增强层残差预测

    公开(公告)号：US08798149B2

    公开(公告)日：2014-08-05

    申请号：US12287784

    申请日：2008-10-14

    申请人： Yu Wen Wu ,  Yong Ying Gao

    发明人： Yu Wen Wu ,  Yong Ying Gao

    IPC分类号： H04N7/12 ,  H04N7/50 ,  H04N7/46

    CPC分类号： H04N7/50 ,  H04N19/30 ,  H04N19/34 ,  H04N19/36 ,  H04N19/577 ,  H04N19/61

    摘要： A scalable video bitstream may have an H.264/AVC compatible base layer and a scalable enhancement layer, where scalability refers to color bit-depth. According to the invention, BL information is bit-depth upsampled using separate look-up tables for inverse tone mapping on two or more hierarchy levels, such as picture level, slice level or MB level. The look-up tables are differentially encoded and included in header information. Bit-depth upsampling is a process that increases the number of values that each pixel can have, corresponding to the pixels color intensity. The upsampled base layer data are used to predict the collocated enhancement layer, based on said look-up tables. The upsampling is done at the encoder side and in the same manner at the decoder side, wherein the upsampling may refer to temporal, spatial and bit depth characteristics. Thus, the bit-depth upsampling is compatible with texture upsampling.

    摘要翻译： 可分级视频比特流可以具有H.264 / AVC兼容的基本层和可伸缩性增强层，其中可伸缩性指的是颜色位深度。 根据本发明，使用单独的查找表对BL信息进行位深度采样，以在诸如图像级，片级或MB级的两个或多个层级上进行逆色调映射。 查找表被差分编码并包含在标题信息中。 位深度上采样是增加每个像素可以具有的值的数量的过程，对应于像素颜色强度。 基于所述查找表，上采样基层数据用于预测并置增强层。 在编码器侧进行上采样并且以相同的方式在解码器侧完成，其中上采样可以指时间，空间和位深度特性。 因此，位深度上采样与纹理上采样兼容。