视频文字识别在视频分析与检索中有着重要作用,该算法对字幕图像进行N层小波分解,获得该视频文字的低频分量,再借助相似性度量方法实现视频文字的识别。-Video character recognition in the video analysis and retrieval plays an important role in the algorithm of subtitles images N layer wavelet decomposition, which is low-frequenc

小波变换在数字化图象的压缩中起着极其重要的作用。本文在简单阐述小波变换基本理论和Mallat算法基本思想的基础上,着重利 用Matlab软件研究了小波变换在图像压缩技术中的具体应用,结合实例给出了具体程序,并对程序进行了详细说明-Wavelet transform of digital image compression plays an extremely important role. In this paper, a simple basic theory of wavelet tra