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计算机工程 ›› 2011, Vol. 37 ›› Issue (19): 138-140. doi: 10.3969/j.issn.1000-3428.2011.19.045

• 人工智能及识别技术 • 上一篇    下一篇

基于分类的中文联机手写文本预合并方法

姚正斌,丁晓青,刘长松   

  1. (清华大学电子工程系智能技术与系统国家重点实验室,北京 100084)
  • 收稿日期:2011-03-30 出版日期:2011-10-05 发布日期:2011-10-05
  • 作者简介:姚正斌(1979-),男,博士研究生,主研方向:联机手写文本切分;丁晓青,教授、博士生导师;刘长松,副教授、博士
  • 基金资助:
    国家“973”计划基金资助项目“非结构化信息(图像)的内容理解与语义表征”(2001AA114081)

Pre-merger Method of Chinese Online Handwritten Text Based on Classification

YAO Zheng-bin, DING Xiao-qing, LIU Chang-song   

  1. (State Key Laboratory of Intelligent Technology and System, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China)
  • Received:2011-03-30 Online:2011-10-05 Published:2011-10-05

摘要: 中文联机手写文本切分识别要求预合并快速高效。为此,设计一个基于最小风险的多层次线性分类器。该分类器根据笔画及切分块的几何特征,采用分层合并的方式完成预合并过程。通过对联机样本进行的实验证明,该分类器保持欠切分错误率在一个较低水平的同时,有效地控制了过切分的错误率。

关键词: 字符切分, 预合并, 最小风险, 鉴别学习, 多层次分类器

Abstract: To solve the problem that high speed and effectiveness is needed for the pre-merger step of online Chinese handwritten text recognition, a multi-layer linear classifier based on minimum risk is provided and realized, which utilizes the geometrical features of strokes and segmented blocks and introduces the scheme of multi-layer combination. Experiments running on real samples show that the classifier reduces the over-segmentation error rate significantly while keeping the under-segmentation error rate in a very low level.

Key words: character segmentation, pre-merger, minimums risk, discriminative learning, multi-layer classifier

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