摘要
该文分析文本图像灰度直方图,计算图像整体灰度方差作为阈值初始值,采用最大类间方差法精确求解阈值,提高了文本图像二值化处理的速度和图像质量。
This paper analyzes the text of the image histogram,calculate the overall image gray variance as the initial value of the threshold,the maximum between-class variance method to accurately solve the threshold,to improve the speed and image quality of the text image binarization processing.
出处
《电脑知识与技术（过刊）》
2012年第5X期3355-3356,3367,共3页
Computer Knowledge and Technology
关键词
数字图书馆
图像二值化
阈值
最大类间方差法
Digital Library
image binarization
threshold
maximum between-class variance method
