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    • 7. 发明授权
    • Temporal matte filter for video matting
    • 用于视频消光的时间无光泽滤光片
    • US08792718B2
    • 2014-07-29
    • US13538712
    • 2012-06-29
    • Xue BaiJue WangDavid P. Simons
    • Xue BaiJue WangDavid P. Simons
    • G06K9/34G06K9/48G06K9/40
    • H04N5/21G06T7/11G06T7/174G06T7/194G06T2207/10016G06T2207/10024G06T2207/20104G06T2207/20161
    • Methods and apparatus for temporal matte filtering. Temporal matte filtering methods are described that improve the temporal coherence of alpha mattes for a video sequence while maintaining the matte structures on individual frames. The temporal matte filter may implement a level-set-based matte averaging method. In the level-set-based matte averaging method, two or more input alpha mattes are obtained. Level set curves are generated for the two or more alpha mattes. An averaged level set is computed from the two or more level sets according to a distance-transform-based technique. A temporally smoothed alpha matte may then be reconstructed by interpolating pixel alpha values between the inner and outer level set curves of the averaged level set. The alpha mattes can be optionally warped towards a center frame according to an optical flow technique before the averaging operation performed by the temporal matte filter.
    • 时间哑光滤波的方法和装置。 描述了时间无光泽滤波方法,其改善了视频序列的α遮罩的时间相干性,同时保持了单个帧上的消光结构。 时间哑光滤波器可以实现基于电平集的无光均衡方法。 在基于水平集的遮罩平均方法中,获得两个或更多个输入alpha遮罩。 为两个或更多个alpha遮罩生成级别设置曲线。 根据基于距离变换的技术,从两个或多个级别集计算平均级别集合。 然后可以通过在平均水平集的内部和外部水平设置曲线之间内插像素α值来重构时间平滑的阿尔法无光泽。 在由时间哑光滤波器执行的平均化操作之前,可以根据光学流技术,将alpha哑光可选地朝向中心框架弯曲。
    • 8. 发明授权
    • Space division multiple access transmission method of statistical characteristic mode
    • 空分多址传输方式统计特征模式
    • US08767671B2
    • 2014-07-01
    • US13395637
    • 2010-12-31
    • Xiqi GaoShi JinDongming WangJue WangXiaohu YouYuan Zhang
    • Xiqi GaoShi JinDongming WangJue WangXiaohu YouYuan Zhang
    • H04W4/00
    • H04B7/0697
    • A Space Division Multiple Access transmission method based on a statistical characteristic pattern including configuring multiple receiving and transmitting antennae at a base station side into one or more antenna arrays; comparing a diagonalization performance among the unitary matrixes for a correlation matrix of subscriber channels, with a long-time statistical correlation matrix of the subscriber channels at the base station side; calculating an optimal diagonalized correlation matrix, and then performing characteristic pattern clustering for the subscribers in a cell with the space resource divisions of the subscribers; grouping the subscribers that belong to a same characteristic pattern cluster into space division subscriber groups; carrying out SDMA transmission, by the subscribers in a same space division subscriber group, with their space resource divisions; dynamically performing subscriber characteristic pattern clustering and space division subscriber grouping described above to generate updated characteristic pattern clusters for the subscribers and updated space division subscriber groups.
    • 一种基于包括在基站侧将多个接收和发送天线配置成一个或多个天线阵列的统计特性模式的空分多址传输方法; 将用户信道的相关矩阵的单位矩阵中的对角化性能与基站侧的用户信道的长时间统计相关矩阵进行比较; 计算最优对角化相关矩阵,然后对具有用户空间资源划分的小区中的用户进行特征模式聚类; 将属于同一特征模式集群的用户分组到空分用户组中; 由同一空间用户组中的用户与其空间资源部门进行SDMA传输; 动态地执行上述用户特征模式聚类和空分用户分组,以为订户和更新的空分用户组生成更新的特征模式集群。