基于音视频特征的电视广告单元分割技术  

TV Commercial Unit Segmentation Based on Video and Audio Features

作　　者：汪玉山[1] 史萍[1] 

机构地区：[1]中国传媒大学通信与信息系统,北京100024

出　　处：《电视技术》2012年第16期22-24,共3页Video Engineering

基　　金：北京市重点学科建设项目

摘　　要：研究了电视广告音视频特征,利用镜头检测和静音检测,实现了电视广告段落中的广告单元分割。其中,镜头检测采用了改进的基于直方图的镜头检测方法,并且利用自适应阈值和滑动窗口的方法检测出切变镜头帧,然后利用短时音频能量和短时过零率检测出静音帧,最后通过匹配切变镜头帧和静音帧得到广告单元切换帧。实验结果表明,这种方法对于广告段落中的广告单元分割有较好的效果。The audio and video features of the TV commercial are analyzed, and the TV commercial unit segmentation is realized by using both shot detection and mute detection. For shot detection, the method based on histogram, as well as the adaptive threshold and sliding window are used to detected cut frames. For mute detection, the short-time energy and zero crossing rate are used to detect the mute frame. Finally the commercial unit boundary frame is detected by matching the cut frame and the mute frame. The experiment results show that the method has a good effect on TV commercial unit segmentation.

关 键 词：视频分割 镜头检测 静音检测 广告单元分割 

分 类 号：TN948.7[电子电信—信号与信息处理]