CAJ | 학술논문

　　本文提出了一种基于小波分析和区域连通性分析的视频文字定位方法。首先从视频流中获取视频帧，并对其进行灰度化等预处理，其次对预处理后的图像进行db小波变换，获取其水平和垂直的高频分量HH，然后对高频分量进行Log边缘检测和形态学操作，初步筛选候选文字区域，再然后利用区域连通性的判别方法，精确定位文字区域，最后输出文本区域并标注。
　　본문제출료일충기우소파분석화구역련통성분석적시빈문자정위방법。수선종시빈류중획취시빈정，병대기진행회도화등예처리，기차대예처리후적도상진행db소파변환，획취기수평화수직적고빈분량HH，연후대고빈분량진행Log변연검측화형태학조작，초보사선후선문자구역，재연후이용구역련통성적판별방법，정학정위문자구역，최후수출문본구역병표주。
This paper present an approach of video text localization method based on wavelet analysis and regional connectivity analysis.First,extract a video frame from the video stream and make pretreatment such as gray,then obtain the pretreatment image’s horizontal and vertical high-frequency component HH by db wavelet transformation, and then filter the initial candidate text areas by Log edge detection and morphological operations on the high-frequency component,after then position the text areas precisely by the discrimination method of regional connectivity,finally,output and mark the final text areas.