摘要
DVD视频提供丰富的文本资源,但是由于其文本信息是以图片的形式存储的,目前的播放软件不能提供针对文本信息的识别和查询。通过对包含字幕数据的私有流1的分析,总结了字幕数据的存储格式和访问接口,给出了字幕流的提取和解码算法,提出了自动化的文本识别方法,并且以MPEG-2解码器为核心设计了一种支持文本识别和查询的DVD播放软件,最后利用Di-rectX技术实现了该播放软件。
DVD video contains plenty of text information, however, current playing software can not provide text information with recognition and searching because it is stored in form of the picture in DVD. By analysing the structure of private stream 1 that includes the subtitle stream data, the storage structure and accessing interface of subtitle data are summarized. The extraction and decoding algorithm for subtitle is described, and the method of automated text recognition is proposed. The DVD playing software supporting text recognition and searching is designed with MPEG-2 decoder as its core and is implemented with the DirectX technologies.
出处
《计算机应用与软件》
CSCD
2009年第9期95-98,共4页
Computer Applications and Software
基金
河南省科技攻关项目(0324500015)资助
