CAJ | 학술논문

视频中的文字包含视频高层语义信息，对其定位和识别在视频信息检索中具有重要的作用，据此提出了一种基于局部二值模式和变异直方图的由粗到精的视频文字检测算法。首先采用边缘检测和形态学分析粗略进行文字定位，然后经局部二值模式进行纹理分析，最后利用变异直方图特征对候选的文字区域精确定位。上述检测方法全部在MATLAB7.0下编程实现，可以精确定位出绝大多数文字的坐标，并用红色矩形框自动标注。实验结果表明，该方法简单，效果良好，特别是经过局部二值模式纹理分析后，文字检测的查全率有所提高，且受文字语种、颜色、字体字号的影响相对较小。
시빈중적문자포함시빈고층어의신식，대기정위화식별재시빈신식검색중구유중요적작용，거차제출료일충기우국부이치모식화변이직방도적유조도정적시빈문자검측산법。수선채용변연검측화형태학분석조략진행문자정위，연후경국부이치모식진행문리분석，최후이용변이직방도특정대후선적문자구역정학정위。상술검측방법전부재MATLAB7.0하편정실현，가이정학정위출절대다수문자적좌표，병용홍색구형광자동표주。실험결과표명，해방법간단，효과량호，특별시경과국부이치모식문리분석후，문자검측적사전솔유소제고，차수문자어충、안색、자체자호적영향상대교소。
The video text contains video semantic information,the location and recognition play an important role in video information retrieval,and puts forward a method based on local two value model and the histogram from coarse to fine algorithm for video text detection.First,the edge detection and morphological analysis of rough text location, then the local two value model for texture analysis, finally using histogram features accurate text area location on the candidate.The detection methods are implemented in MATLAB7.0,you can locate the coordinates of the vast majority of the text,and with a red rectangular box automatic annotation.The experimental results show that,this method is simple,the effect is good, especially after the two value model of local texture analysis,text detection recall increased,and text language, the effects of color,the font size of the relatively small.