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    • 2. 发明公开
    • Hierarchical hybrid shot change detection method for MPEG-compressed video
    • MPEG-komprimierten视频中的分层混合方法zen Detektion vonFilmsequenzänderungen
    • EP1133191A1
    • 2001-09-12
    • EP01302078.9
    • 2001-03-07
    • LG ELECTRONICS INC.
    • Jun, Sung BaeYoon, Kyoung Ro
    • H04N7/50H04N5/14G06F17/30
    • H04N19/142G11B27/28H04N5/147H04N5/45H04N19/179H04N19/48H04N19/87H04N19/90H04N21/44008
    • There is disclosed a hierarchical hybrid shot change detection method in MPEG-compressed video circumstances, wherein the method comprises: detecting a shot change candidate region, by hierarchically applying a global color distribution difference among the frames by the color histogram; detecting an abridged shot change candidate region by using the difference of the global color histogram difference among adjacent I, P frames after additionally decoding P frames existed in the detected candidate region; decoding B frames within a abridged shot change detection candidate region at a macro block level in a sequence of the B frames sharing adjacent two anchor frames; determining a distribution characteristic of an intra coded block and a reference pattern type of each B frame in the region; and detecting a hard cut by using the distribution characteristic and reference type.
    • 公开了MPEG压缩视频环境中的分级混合镜头改变检测方法,其中,所述方法包括:通过所述颜色直方图分层地应用所述帧之间的全局颜色分布差异来检测镜头改变候选区域; 通过使用检测到的候选区域中存在的P帧之后的相邻I,P帧之间的全局颜色直方图差的差异来检测节点化改变候选区域; 在共享邻近的两个锚帧的B帧的序列中,在宏块级别的精简镜头改变检测候选区域内对B帧进行解码; 确定该区域中每个B帧的帧内编码块和参考图案类型的分布特性; 并通过使用分布特性和参考类型来检测硬切割。
    • 3. 发明公开
    • Method of detecting dissolve/fade in mpeg-compressed video environment
    • 在einer MPEG-Umgebung zu detektieren的Verfahren umberberendung
    • EP1132812A1
    • 2001-09-12
    • EP01302080.5
    • 2001-03-07
    • LG ELECTRONICS INC.
    • Jun, Sung BaeYoon, Kyoung Ro
    • G06F7/20H04N5/14G06F17/30
    • G06K9/00765H04N5/147H04N5/4401H04N19/142H04N19/179H04N19/87H04N21/44008
    • There is provided a method of detecting dissolve/fade in an MPEG-compressed video environment, which includes the steps of: detecting a candidate sequence that is presumed to use a dissolve/fade editing effect according to shot transition detection in a video sequence; finding if spatio-temporal macro block type distribution that characteristically appears in a dissolve/fade sequence arises in the dissolve/fade candidate sequence, to judge if a scene transition by dissolve/fade was used in the detected dissolve/fade candidate sequence; and when the spatio-temporal macro block type distribution in the dissolve/fade sequence continuously appears in the dissolve/fade candidate sequence, comparing the length of the candidate sequence with a predetermined critical value and finally judging that the candidate sequence is a dissolve/fade sequence when its length is longer than the threshold.
    • 提供了一种检测MPEG压缩视频环境中的溶解/淡化的方法,其包括以下步骤:根据视频序列中的镜头转换检测,检测假定使用溶解/淡变编辑效果的候选序列; 发现在溶解/褪色候选序列中出现特征性地出现在溶解/褪色序列中的时空宏块类型分布,以判断在检测到的溶解/褪色候选序列中是否使用溶解/褪色的场景转换; 并且当溶解/褪色序列中的时空宏块类型分布连续地出现在溶解/褪色候选序列中时,将候选序列的长度与预定临界值进行比较,最后判断候选序列是溶解/褪色 当其长度大于阈值时的序列。