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    • 16. 发明申请
    • Method and apparatus for encoding video content
    • 用于编码视频内容的方法和装置
    • US20050078220A1
    • 2005-04-14
    • US10993850
    • 2004-11-19
    • Gary Sullivan
    • Gary Sullivan
    • H04N5/44H04N7/08G06K9/36
    • H04N7/08H04N7/0122
    • A system identifies video data to be encoded as well as multiple display regions associated with a particular video display type. Each of the multiple display regions is associated with a different portion of an image associated with the video data. The video data is encoded such that the encoded video data includes information regarding the multiple display regions. Each of the multiple display regions has an associated display region identifier. Additionally, the system may identify an active region of the video data. The active region may be located anywhere within an image associated with the video data. The video data is encoded such that the encoded video data includes information regarding the active region.
    • 系统识别要编码的视频数据以及与特定视频显示类型相关联的多个显示区域。 多个显示区域中的每一个与与视频数据相关联的图像的不同部分相关联。 对视频数据进行编码,使得编码的视频数据包括关于多个显示区域的信息。 多个显示区域中的每一个具有相关联的显示区域标识符。 另外,系统可以识别视频数据的有效区域。 有源区域可以位于与视频数据相关联的图像内的任何地方。 对视频数据进行编码,使得编码的视频数据包括有关活动区域的信息。
    • 20. 发明申请
    • MULTIMEDIA SIGNAL PROCESSING USING FIXED-POINT APPROXIMATIONS OF LINEAR TRANSFORMS
    • 使用线性变换的固定点逼近的多媒体信号处理
    • US20070081734A1
    • 2007-04-12
    • US11423387
    • 2006-06-09
    • Gary SullivanJian Lou
    • Gary SullivanJian Lou
    • G06K9/36
    • G06F17/147
    • Close approximations of ideal linear transforms, such as the forward and inverse discrete cosine transformation (DCT), are formed with minimum complexity using fixed-point arithmetic. The transformation is decomposed into a smaller set of transformations (e.g., the LLM decomposition of the DCT). The multiplication factors of the decomposition are then approximated by a fixed-point representation. However, instead of simply applying scaling and rounding operations to produce fixed-point approximations closest to the multiplication factors themselves, fixed-point multiplication factors are chosen that have the effect (after the cascaded operations of the various stages of decomposition) of being the closest feasible approximations of the entries in the resulting complete ideal transformation matrix.
    • 使用定点算法以最小复杂度形成理想线性变换的近似,例如正向和反向离散余弦变换(DCT)。 该变换被分解成较小的一组变换(例如,DCT的LLM分解)。 然后,分解的乘法因子用定点表示近似。 然而,不是简单地应用缩放和舍入操作来产生最接近乘法因子本身的定点近似,而是选择具有效应的定点乘法因子(在各种分解阶段的级联操作之后)是最接近的 所得到的完整理想变换矩阵中条目的可行逼近。