一种数字仪表显示值识别的预处理算法  

A Preprocessing Algorithm for Meter Display Value Recognition

作　　者：张海波[1] 段会川[1] 谢术富[1] 刘弘[1] 

机构地区：[1]山东师范大学计算机科学系,山东济南250014

出　　处：《计算机应用研究》2005年第2期240-242,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(60374054)

摘　　要：首先使用一种综合多帧差异积累、形态滤波和Sobel边缘检测的方法实现了数字区域的准确定位分割,然后采用基于局部门限处理的方法,解决了图像亮度分布不均的二值化问题,最后运用连续子集迭代分割算法实现了粘连和断裂数字的准确切分。Firstly, an algorithm that combines multi-frame difference accumulation, morphological filtering and Sobel edge detection is presented for realizing the location and segmentation of digit regions. Then a method based on local threshold process is used to resolve the problem that caused by illumination. Finally, an iterative algorithm based on continuous subset is proposed to realize the exact separation of touching digits and the merging of digit fragments.

关 键 词：帧间差分 形态滤波 连续子集 边缘检测 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]