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    • 4. 发明申请
    • A METHOD OF DETERMINING A STARTING POINT OF A SEMANTIC UNIT IN AN AUDIOVISUAL SIGNAL
    • 一种在视听信号中确定语义单元的起始点的方法
    • WO2009063383A1
    • 2009-05-22
    • PCT/IB2008/054691
    • 2008-11-10
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.ZOETEKOUW, BastiaanFONSECA, PedroWANG, Lu
    • ZOETEKOUW, BastiaanFONSECA, PedroWANG, Lu
    • H04N5/14G06F17/30
    • H04N5/147G06F17/30787G06F17/30796G06K9/00711
    • A method of determining a starting point (12) of a segment (11) corresponding to a semantic unit of an audiovisual signal includes processing an audio component of the signal to detect sections (14) satisfying a criterion for low audio power, and processing the audiovisual signal to identify boundaries of sections corresponding to shots. A video component of the audiovisual signal is processed to evaluate a criterion for identifying video sections formed by at least one shot of a certain type, comprising images in which an anchorperson is likely to be represented. If at least an end point of a section (14) satisfying the criterion for low audio power lies on a certain interval between boundaries of an identified video section (13), a point coinciding with a section (14) satisfying the criterion for low audio power and located between the boundaries of the identified video section is selected as a starting point (12) of a segment (11). Upon determining that no sections satisfying the criterion for low audio power coincide with an identified video section (13), a boundary of the video section is selected as a starting point (12) of a segment (11).
    • 确定与图像声音信号的语义单元对应的段(11)的起始点(12)的方法包括处理信号的音频分量以检测满足低音频功率标准的部分(14),并处理 视听信号,以识别与拍摄对应的部分的边界。 视频信号的视频分量被处理以评估用于识别由某个类型的至少一个镜头形成的视频部分的标准,包括可能在其中表示锚者的图像。 如果满足低音频功率的标准的部分(14)的至少端点位于所识别的视频部分(13)的边界之间的一定间隔,则与满足低音频标准的部分(14)重合的点 选择位于所识别的视频部分的边界之间的功率作为段(11)的起始点(12)。 在确定没有满足低音频功率标准的部分与所识别的视频部分(13)一致时,选择视频部分的边界作为片段(11)的起点(12)。