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    • 71. 发明授权
    • System and method for seeding rule-based machine learning models
    • 基于规则的机器学习模型的系统和方法
    • US08793201B1
    • 2014-07-29
    • US13283428
    • 2011-10-27
    • Jue WangMadhu M. KurupSrikar Yekollu
    • Jue WangMadhu M. KurupSrikar Yekollu
    • G06F15/18
    • G06F17/30569
    • Embodiments of a system and method for seeding rule-based machine learning models include generating a set of seed rules including one or more rules resulting from one or more previously performed machine learning operations and one or more randomly or pseudo-randomly generated rules. Embodiments may include performing one or more machine learning operations on the set of seed rules to generate a new set of rules for determining whether a pair of information items have a specific relationship. Generating the new set of rules from the seed rules may be faster than generating a set of rules from random data. Embodiments may also include applying the new set of rules to one or more pairs of information items to identify at least one pair of information items as having the specific relationship. For instance, the rules may be applied to identify pairs of information items that are duplicate pairs.
    • 用于播种基于规则的机器学习模型的系统和方法的实施例包括生成一组种子规则,其包括由一个或多个先前执行的机器学习操作和一个或多个随机或伪随机生成的规则产生的一个或多个规则。 实施例可以包括对种子规则集执行一个或多个机器学习操作以生成用于确定一对信息项是否具有特定关系的一组新规则。 从种子规则生成新的一组规则可能比从随机数据生成一组规则更快。 实施例还可以包括将新的一组规则应用于一对或多对信息项,以将至少一对信息项识别为具有特定关系。 例如,可以将规则应用于识别是重复对的信息项对。
    • 72. 发明授权
    • Methods and apparatus for robust video stabilization
    • 稳健视频稳定的方法和装置
    • US08724854B2
    • 2014-05-13
    • US13301572
    • 2011-11-21
    • Hailin JinAseem O. AgarwalaJue Wang
    • Hailin JinAseem O. AgarwalaJue Wang
    • G06K9/00G06K9/36H04N7/18H04N5/225
    • G06T7/33G06T7/246G06T2207/10016G06T2207/20028G06T2207/30241
    • Methods and apparatus for robust video stabilization. A video stabilization technique applies a feature tracking technique to an input video sequence to generate feature trajectories. The technique applies a video partitioning technique to segment the input video sequence into factorization windows and transition windows. The technique smoothes the trajectories in each of the windows, in sequence. For factorization windows, a subspace-based optimization technique may be used. For transition windows, a direct track optimization technique that uses a similarity motion model may be used. The technique then determines and applies warping models to the frames in the video sequence. In at least some embodiments, the warping models may include a content-preserving warping model, a homography model, a similarity transform model, and a whole-frame translation model. The warped frames may then be cropped according to a cropping technique.
    • 稳健视频稳定的方法和装置。 视频稳定技术将特征跟踪技术应用于输入视频序列以产生特征轨迹。 该技术应用视频分割技术将输入视频序列分解为分解窗口和转换窗口。 该技术顺序地平滑每个窗口中的轨迹。 对于分解窗口,可以使用基于子空间的优化技术。 对于转换窗口,可以使用使用相似度运动模型的直接跟踪优化技术。 该技术然后确定并应用翘曲模型到视频序列中的帧。 在至少一些实施例中,翘曲模型可以包括内容保留翘曲模型,单应性模型,相似度变换模型和全帧翻译模型。 然后可以根据裁剪技术对翘曲的框架进行裁剪。
    • 74. 发明申请
    • Temporal Matte Filter for Video Matting
    • 视频消光的时域滤光片
    • US20140002746A1
    • 2014-01-02
    • US13538712
    • 2012-06-29
    • Xue BaiJue WangDavid P. Simons
    • Xue BaiJue WangDavid P. Simons
    • H04N5/21
    • 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。