摘要
本文提出了一种基于Laplace变换的视频图像水平文本检测算法。首先用Laplace变换对图像滤波,并根据梯度信息用K-均值方法对像素点聚类,得到候选文本区;然后用投影算法对候选文本区进行边缘精确,得到候选文本块;最后分析候选文本块的几何特性,进行文本验证。本文算法在公共数据库上的测试结果表明了算法的可行性和有效性。
The paper proposes a horizontal video text detection method based on Laplace transform. Firstly, we use K-means to cluster pixels on the Laplace-i ltered image to obtain candidate text region based on gradient information. Then, projection proi le is applied on candidate text region for boundary rei nement and we obtain candidate text blocks. Finally, text identii cation is performed to remove non-text blocks by analyzing geometrical properties. The experimental results on public dataset show the ef ectiveness and feasibility of the proposed method.
出处
《广播与电视技术》
2015年第5期71-74,共4页
Radio & TV Broadcast Engineering
