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    • 4. 发明授权
    • Method and apparatus for comparing videos
    • 用于比较视频的方法和装置
    • US08639040B2
    • 2014-01-28
    • US13206856
    • 2011-08-10
    • John R. ZhangYansong RenFangzhe ChangThomas L. Wood
    • John R. ZhangYansong RenFangzhe ChangThomas L. Wood
    • G06K9/68G06K9/46
    • G06K9/00711
    • A method for comparing videos includes detecting local features in frames of a video and determining the positions of detected local features in a first frame compared to their respective positions in a succeeding second frame. For at least some of the detected local features, a movement indicator is generated representing the position of a local feature in the first frame relative to the position of that local feature in the second frame, the movement indicator including an orientation, to obtain a plurality of movement indicators. Movement indicators are grouped by orientation ranges. The number of grouped movement indicators in an orientation range are summed to obtain a value for that orientation range. A time series of values for at least one given orientation range is obtained by determining the positions of detected local features in a first frame compared to their respective positions in a succeeding second frame for a plurality of pairs of frames. For at least one orientation range, a first time series of values for a first video is compared with a second time series of values for a second video to determine the similarity of the first and second videos.
    • 用于比较视频的方法包括检测视频的帧中的局部特征,并且确定与第二帧中的相应位置相比在第一帧中检测到的局部特征的位置。 对于检测到的局部特征中的至少一些,生成表示第一帧中的局部特征相对于该第二帧中该局部特征的位置的位置的移动指示符,该移动指示符包括取向,以获得多个 的运动指标。 运动指标按取向范围分组。 将取向范围中的分组移动指示器的数量相加以获得该取向范围的​​值。 通过确定与多个帧对的后续第二帧中的相应位置相比,第一帧中检测到的局部特征的位置,获得至少一个给定取向范围的​​时间序列值。 对于至少一个取向范围,将第一视频的第一时间序列值与第二视频的第二时间序列值进行比较,以确定第一和第二视频的相似度。
    • 5. 发明申请
    • METHOD AND APPARATUS FOR COMPARING VIDEOS
    • 用于比较视频的方法和装置
    • US20130039587A1
    • 2013-02-14
    • US13206856
    • 2011-08-10
    • John R. ZhangYansong RenFangzhe ChangThomas L. Wood
    • John R. ZhangYansong RenFangzhe ChangThomas L. Wood
    • G06K9/46
    • G06K9/00711
    • A method for comparing videos includes detecting local features in frames of a video and determining the positions of detected local features in a first frame compared to their respective positions in a succeeding second frame. For at least some of the detected local features, a movement indicator is generated representing the position of a local feature in the first frame relative to the position of that local feature in the second frame, the movement indicator including an orientation, to obtain a plurality of movement indicators. Movement indicators are grouped by orientation ranges. The number of grouped movement indicators in an orientation range are summed to obtain a value for that orientation range. A time series of values for at least one given orientation range is obtained by determining the positions of detected local features in a first frame compared to their respective positions in a succeeding second frame for a plurality of pairs of frames. For at least one orientation range, a first time series of values for a first video is compared with a second time series of values for a second video to determine the similarity of the first and second videos.
    • 用于比较视频的方法包括检测视频的帧中的局部特征,并且确定与第二帧中的相应位置相比在第一帧中检测到的局部特征的位置。 对于检测到的局部特征中的至少一些,生成表示第一帧中的局部特征相对于该第二帧中该局部特征的位置的位置的移动指示符,该移动指示符包括取向,以获得多个 的运动指标。 运动指标按取向范围分组。 将取向范围中的分组移动指示器的数量相加以获得该取向范围的​​值。 通过确定与多个帧对的后续第二帧中的相应位置相比,第一帧中检测到的局部特征的位置,获得至少一个给定取向范围的​​时间序列值。 对于至少一个取向范围,将第一视频的第一时间序列值与第二视频的第二时间序列值进行比较,以确定第一和第二视频的相似度。
    • 6. 发明申请
    • METHOD AND APPARATUS FOR COMPARING VIDEOS
    • 用于比较视频的方法和装置
    • US20120189212A1
    • 2012-07-26
    • US13012516
    • 2011-01-24
    • Yansong RenFangzhe ChangThomas L. Wood
    • Yansong RenFangzhe ChangThomas L. Wood
    • G06K9/68
    • G06T7/0038G06F17/30784G06F17/30802G06K9/00758G06T7/38G06T2207/10016G06T2207/20021
    • A method for comparing a query video and a target video includes partitioning frames of the query video and frames of the target video into blocks and calculating the mean intensity value for each block. A plurality of query time series is produced for the query video, each query time series representing temporal variation in mean intensity value for blocks from the same location in different frames of the query video. A plurality of target time series is produced for the target video, each target time series representing temporal variation in mean intensity value for blocks from the same location in different frames of the target video the query time series and the target time series are used in determining if alignment exists between the query video and the target video.
    • 用于比较查询视频和目标视频的方法包括将查询视频的帧和目标视频的帧分成块,并计算每个块的平均强度值。 为查询视频产生多个查询时间序列,每个查询时间序列表示来自查询视频的不同帧中相同位置的块的平均强度值的时间变化。 为目标视频产生多个目标时间序列,每个目标时间序列表示在目标视频的不同帧中的查询时间序列和目标时间序列的来自相同位置的块的平均强度值的时间变化,用于确定 如果在查询视频和目标视频之间存在对齐。