摘要： 分析了常用的局部阈值法－Bernsen算法中存在的问题，对此算法进行了有效的改进，提出了一种改进的文本图像二值化算法。由于改进后的算法考虑了图像的整体特征，并采用快速算法，因此具有更广泛的适应性和实用价值。实验结果表明了此算法的有效性。

关键词: 二值化, 局部阈值, 整体阈值, 光学字符识别

Abstract: After analyzing the shortcomings of Bernsen algorithm, which is one of the commonly used algorithms based on local threshold, this paper proposes an improved binarization algorithm for document image. The improved algorithm is more adaptive and useful because it has considered the global information of the images and has used a fast algorithm. The experiment results have proved the validity of algorithm.

中图分类号: 

• TP391.1