盲文自动识别方法研究

Research on braille automatic identification method

本文研究的盲文点字自动识别技术,利用数字摄像机采集盲文图像,并利用图像处理技术,对盲文图像进行预处理,将盲文图像转换成二值图像,然后再利用盲文点字的特性来提取盲文点字特征,并定位、分组盲文点字单元,以二进制字符串的形式与盲文语料库进行匹配,识别出盲文点字信息。本论文中给出了盲文识别的总体方法,并详细介绍了具体的处理方法。实验证明,该方法能有效、准确的提取盲文点字,并转换成汉语拼音。

The braille automatic identification technology described in this paper captures braille images by digital camera,pretreats them by image processing technology,converts them into binary images,then extracts braille features by the fixed nature of braille,po-sitions and groups braille cells to match corpora by the binary character string so as to identify information.This paper gives the general method of braille recognition and introduces concrete methods.The experiments show that the method is effective and accurate for braille extraction and convertion into Chinese spelling.