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Caption Detection of TV Based on Sobel and Canny
Author(s): 
Pages: 67-69,85
Year: Issue:  13
Journal: Video Engineering

Keyword:  边缘检测字幕检测SobelCanny算子Matlab;
Abstract: 电视字幕检测在电视节目监播、搜索和查询中起着重要的作用,其应用越来越广泛.目前,可用于电视字幕检测的算子很多,比较典型的有Sobel和Canny算子.通过对Sobel和Canny算子的算法分析以及Matlab仿真实验的对比,可以得出:Sobel算子算法简单,速度较快,但检测精度不高,适合字幕段的快速搜索和检测;Canny算子算法复杂,但检测精度较高,适合电视字幕的精确检测和搜索.
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