摘要
复杂背景切换以及半透明化趋势增加了电视台标检测的难度。针对当前台标检测中存在的问题,提出一种视频帧加权处理的台标自动检测方法。首先根据台标位置的先验知识,利用视频帧加权方法对视频图像帧作实时背景更新处理,得到稳定的灰度台标图像;然后采用Canny算法对实时灰度台标进行边缘检测,得到台标的轮廓图像;最后采用简化的分水岭填充算法得到单个台标图像。使用部分地方电视台台标进行实验,提取出的实时台标图像效果好,证明了该方法的有效性。
It brings difficulty in process of TV logo detection because of complex background switch and the semi-transparent trend of logo. A TV logo detection method is proposed to solve these problems which based on weighted videos. Firstly, the logo image which contain the complex background is updated which based on weighted videos according to the previous information of the logo area. Secondly, it uses Canny arithmetic operator to detect the boundary of the logo, then the contour of the logo is formed. Finally, optimize watershed-filled arithmetic is used to get the image only the logo. By u- sing several local TV logos, the experiments＇ satisfied detected result indicates that this method is effective.
出处
《电视技术》
北大核心
2012年第21期33-36,66,共5页
Video Engineering
