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    • 35. 发明申请
    • System and method for video processing using overcomplete wavelet coding and circular prediction mapping
    • 使用过完整小波编码和循环预测映射的视频处理系统和方法
    • US20060153466A1
    • 2006-07-13
    • US10562534
    • 2004-06-28
    • Jong YeMihaela Van Der Schaar
    • Jong YeMihaela Van Der Schaar
    • G06K9/36
    • H04N19/99G06T9/004
    • A system, method, and computer program product for fractal video coding, based on the circular prediction mapping (CPM) in overcomplete wavelet domain. According to the disclosed process, each range block [B] is approximated by a domain block [A] in circularly previous frame [Fn-1]. The size of the domain block is made larger than that of the range block using a complete-to-overcomplete transform [FIG. 2], which provides faster convergence speed compared to the conventional CPM algorithm that uses the same domain block size. However, high temporal correlation is very well exploited between the adjacent frames, since the extended reference [210] is generated by shifting the original image [202] and hence retains the high temporal correlation to the range blocks. Furthermore, the preferred embodiment provides a spatial scalability.
    • 一种用于分形视频编码的系统,方法和计算机程序产品,基于过度完整小波域中的循环预测映射(CPM)。 根据所公开的处理,每个范围块[B]由循环前一帧[F n-1-1]中的域块[A]近似。 使用完全到完全变换,使得域块的大小大于范围块的大小。 2],与使用相同域块大小的常规CPM算法相比,其提供更快的收敛速度。 然而,由于扩展参考文献[210]是通过移动原始图像(202)而产生的并因此将高时间相关性保留到范​​围块,所以在相邻帧之间很好地利用了高时间相关性。 此外,优选实施例提供了空间可扩展性。
    • 39. 发明授权
    • Minimizing drift in motion-compensation fine granular scalable structures
    • 最小化运动补偿精细粒度可伸缩结构中的漂移
    • US06904092B2
    • 2005-06-07
    • US10081909
    • 2002-02-21
    • Mihaela Van Der Schaar
    • Mihaela Van Der Schaar
    • H04N7/32H03M7/36H04N7/26H04N7/12
    • H04N19/34H04N19/29
    • A method and apparatus for minimizing prediction drift at low bitrates in a fine granular scalable video coding scheme that utilizes motion compensation in an enhancement layer. The method and apparatus measures motion activity within at least a portion a video; determines whether the measured motion activity is below a predetermined threshold value; codes the portion of the video with the fine granular scalable video coding scheme that utilizes motion compensation in the enhancement layer if the measured motion activity is below the predetermined threshold value; and codes the portion of the video with a fine granular scalable video coding that does not utilize motion compensation in the enhancement layer if the measured motion activity is above the predetermined threshold value.
    • 一种利用在增强层中运动补偿的精细粒度可分级视频编码方案中的低比特率下的预测漂移最小化的方法和装置。 该方法和装置测量至少一部分视频内的运动活动; 确定所测量的运动活动是否低于预定阈值; 如果所测量的运动活动度低于预定阈值,则使用利用增强层中的运动补偿的精细粒度可缩放视频编码方案对视频的部分进行编码; 并且如果所测量的运动活动高于预定阈值,则使用不会在增强层中使用运动补偿的精细粒度可缩放视频编码对视频的一部分进行编码。
    • 40. 发明授权
    • Method for storing and retrieving data that conserves memory bandwidth
    • 用于存储和检索节省存储器带宽的数据的方法
    • US06496199B1
    • 2002-12-17
    • US09411461
    • 1999-10-01
    • Sharon PengMihaela Van Der Schaar
    • Sharon PengMihaela Van Der Schaar
    • G09G500
    • G06T1/60G06T9/007
    • A method for storing a block of data consisting of N rows and M columns, which includes the step of transposing the block of data by 90° to thereby produce a transposed block of data consisting of M rows and N columns, and, the step of storing the transposed block of data. The transposed block of data is preferably retrieved by using one or more fetch commands, with the number of fetch commands required to retrieve the transposed block of data being less than the number of fetch commands required to retrieve the same data if stored in its original form, thereby reducing memory bandwidth. In a presently contemplated implementation, the block of data is a reference macroblock of decoded MPEG video data that is used in motion compensation operations, and each of the fetch commands is an A×B fetch command, where A represents the number of columns of data and B represents the number of rows of data to be fetched in response thereto, and wherein further, A>B.
    • 一种用于存储由N行和M列组成的数据块的方法,其包括将数据块转置90°的步骤,从而产生由M行和N列组成的转置数据块,并且步骤 存储转置的数据块。 优选地通过使用一个或多个获取命令来检索转置的数据块,如果存储在其原始形式中,则检索转置的数据块所需的获取命令的数量小于检索相同数据所需的获取命令的数量 ,从而减少内存带宽。 在目前预期的实现中,数据块是用于运动补偿操作的解码的MPEG视频数据的参考宏块,并且每个取指令是AxB取指令,其中A表示数据列数和B 表示响应于该数据的行数,并且还包括A> B。