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联机手写化学公式识别与分析

DOI: 10.11834/jig.20100919

Keywords: 联机手写化学公式,两级分类,结构分析

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Abstract:

随着移动设备的日渐普及,联机手写输入方式为化学知识的使用和分享提供了可能,而化学公式的数字化处理也逐渐成为热点。为了有效进行联机手写化学公式的识别,通过整理6种化学公式中常见的符号位置关系,提出了一种用于联机手写化学公式识别与分析的方法,该方法在处理了断笔、粘连、连笔等书写异常情况后,完成了对化学公式的切分。识别时,先利用SVM+HMM的两级分类机制识别独立的化学符号;然后以公式的语义和语法规则协助理解用户的书写原意。实验证明,该方法应用于平板电脑,对于上述3个阶段的化学公式识别均取得了理想的结果,从而为联机手写化学公式重现和重用打下了基础。

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