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CN101855897A 确定视听信号中的语义单元的起点的方法 无效 - 撤回

确定视听信号中的语义单元的起点的方法
摘要：
一种确定片段(11)的起点(12)的方法，该片段对应于视听信号的语义单元，所述包括：处理该信号的音频成分以检测满足低音频功率标准的部分(14)；以及处理该视听信号以识别对应于镜头的部分的边界。视听信号的视频成分被处理以评估用于识别由特定类型的至少一个镜头形成的视频部分的标准，该特定类型的至少一个镜头包括其中可能表示主持人的图像。如果满足低音频功率标准的部分(14)的至少一个终点位于所识别的视频部分(13)的边界之间的特定间隔处，则与满足低音频功率标准的部分(14)一致且位于所识别的视频部分的边界之间的点被选择为片段(11)的起点(12)。当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，该视频部分的边界被选择为片段(11)的起点(12)。
摘要（英）：

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).

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