一种非直线倾斜的打印体汉字串图像矫正方法  

A correction method for the non-linear tilt printed Chinese character string image

作　　者：吴爽[1] 祝进[1] 王丙文[1] 吴婧妤[1] 叶鹏飞[1] 

机构地区：[1]国电南瑞科技股份有限公司,南京211106

出　　处：《信息技术》2017年第10期146-149,159,共5页Information Technology

摘　　要：为解决非直线倾斜的打印体汉字串文本图像难以准确地进行倾斜矫正的问题,提出一种适用于直线和非直线倾斜的打印体汉字串文本图像矫正的通用方法。该方法首先通过对汉字串图像进行粗切分求取单个字符的特征点位置,其次根据特征点的坐标位置利用最小二乘法拟合得到基线的分段直线方程,从而得到各段图像的倾斜角,最后利用旋转变换对各分段图像分别进行倾斜矫正。实验结果表明,该方法具有较好的矫正效果,可广泛应用于各种汉字串文本图像倾斜的情况,具有一般通用性。A common method which applies to linear and non-linear tilt Chinese character string image is proposed to solve the problem that it is difficult to accurately tilt correction the non-linear tilt printed Chinese character string image. First the method gets the position of the feature point of each character.And then the segment linear equation is gained by the least-squares-fit method. Thereby the tilt angle of each segment image is obtained. Finally,the each segment image is tilted correction by the rotation transformation. The experiment results show that the method has a good correction effect and it can be widely applied to the case of various Chinese character string image with general versatility.

关 键 词：倾斜矫正 分段直线拟合 特征点 最小二乘法 文本图像 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]