汉字二值文档图像背景归一化问题研究

A Method for Background Normalization of Chinese Binary Image

提出了一种基于数字形态学理论的文档图像黑白背景归一化的方法。在假设字体、字号已知的前提下提出了利用数学形态学中的开运算提取图像中黑底白字区域的方法,并将该区域转化为白底黑字从而实现文字背景色的归一。

This paper proposes a method by mathematical morphology to identify the areas with white characters on black background, based on that all characters have the same style and size. Then it converts these areas into white background with black characters so as to unify the whole background.