Method and apparatus for shot detection
    83.
    发明授权
    Method and apparatus for shot detection 有权
    射击检测方法和装置

    公开(公告)号:US07444018B2

    公开(公告)日:2008-10-28

    申请号:US10930170

    申请日:2004-08-31

    申请人: Wei Qi Dong Zhang

    发明人: Wei Qi Dong Zhang

    IPC分类号: G06K9/00 H04N5/14

    摘要: A system identifies an abrupt transition in content between two frames, and determines whether the abrupt transition was caused by a shot boundary between the two frames or by a flashlight event. Identification of the abrupt transition in content includes calculating a difference in light intensity histograms between the current frame and a preceding frame, and comparing the histogram difference to a dynamically determined threshold. Further, an average light intensity based method is used to determine whether the abrupt transition was caused by a shot boundary or by a flashlight event.

    摘要翻译: 系统识别两帧之间内容的突然转换,并确定突发转换是由两帧之间的拍摄边界还是由手电筒事件引起。 识别内容中的突然转变包括计算当前帧和前一帧之间的光强度直方图的差异,并将直方图差异与动态确定的阈值进行比较。 此外,使用基于平均光强度的方法来确定突然转变是由射击边界还是由手电筒事件引起的。

    Method and apparatus for shot detection

    公开(公告)号:US07113640B2

    公开(公告)日:2006-09-26

    申请号:US10997451

    申请日:2004-11-24

    申请人: Wei Qi Dong Zhang

    发明人: Wei Qi Dong Zhang

    IPC分类号: G06K9/00 H04N5/14

    摘要: A system identifies an abrupt transition in content between two frames, and determines whether the abrupt transition was caused by a shot boundary between the two frames or by a flashlight event. Identification of the abrupt transition in content includes calculating a difference in light intensity histograms between the current frame and a preceding frame, and comparing the histogram difference to a dynamically determined threshold. Further, an average light intensity based method is used to determine whether the abrupt transition was caused by a shot boundary or by a flashlight event.

    Method and apparatus for shot detection

    公开(公告)号:US20050100213A1

    公开(公告)日:2005-05-12

    申请号:US10997451

    申请日:2004-11-24

    申请人: Wei Qi Dong Zhang

    发明人: Wei Qi Dong Zhang

    摘要: A system identifies an abrupt transition in content between two frames, and determines whether the abrupt transition was caused by a shot boundary between the two frames or by a flashlight event. Identification of the abrupt transition in content includes calculating a difference in light intensity histograms between the current frame and a preceding frame, and comparing the histogram difference to a dynamically determined threshold. Further, an average light intensity based method is used to determine whether the abrupt transition was caused by a shot boundary or by a flashlight event.