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    • 3. 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。
    • 7. 发明申请
    • Rate-distortion video data partitioning using convex hull search
    • 使用凸包搜索的速率失真视频数据分区
    • US20070047639A1
    • 2007-03-01
    • US10573086
    • 2004-09-21
    • Jong Ye
    • Jong Ye
    • H04B1/66H04N7/12
    • H04N19/36H04N19/102H04N19/147H04N19/187H04N19/19H04N19/30H04N19/37H04N19/61
    • Method for partitioning video data into a base layer and at least one enhancement layer entailing receiving video data, determining DCT coefficients for a plurality of blocks of a video frame to form the base layer and the at least one enhancement layer and for each block, quantizing the DCT coefficients, converting the quantized DCT coefficients of the base layer into a set of (run, length) pairs, and determining which pairs lie on a convex hull. Thereafter rate-distortion optimal partitioning points are determined from only those pairs which lie on the convex hull in a causally optimal way. The (run, length) pairs before and inclusive of the partitioning point are encoded in the base layer while the other (run, length) pairs are encoded in the enhancement layer(s). A video encoder (22) and decoder (28) applying the method are also disclosed.
    • 用于将视频数据分割成基本层和至少一个增强层,用于接收视频数据的方法,确定视频帧的多个块的DCT系数以形成基本层和至少一个增强层,并且对于每个块,量化 DCT系数,将基本层的量化的DCT系数转换成一组(运行,长度)对,并确定哪些对位于凸包上。 此后,速率失真最优分割点仅由以因果关系最优的方式位于凸包上的那些对确定。 分配点之前和之后的(运行,长度)对被编码在基本层中,而另一个(运行,长度)对被编码在增强层中。 还公开了应用该方法的视频编码器(22)和解码器(28)。