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Preprocessing and feature extraction for a handwriting recognitionsystem

机译:手写识别系统的预处理和特征提取

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摘要

Offline cursive script word recognition has received increasingattention during the last years. Impressive progress has been achievedin reading isolated single characters during the last decade. Cursivescript recognition still lacks a good recognition rate. Since there is ahigh variability in unconstrainted handwritten script words, the domainis much more difficult than single character recognition. To achieveacceptable results, the context has to be restricted by a given lexiconof all possible words. The only accessible information is the binaryimage of the cursive script word. Since handling of raster data iscumbersome, connectivity analysis is applied as a first processing step.Thereafter it is necessary to reduce the variability as much as possiblewithout losing relevant information. Therefore, some normalization stepsangle, rotation stroke width, and size. The normalization techniques ofthe authors' system and the subsequent feature extraction are presented.The proposed algorithms are every efficient because they are based onthe contour information provided by connectivity analysis
机译:脱机草书脚本单词识别越来越多 最近几年的关注。取得了令人印象深刻的进步 在过去十年中阅读孤立的单个字符。草书 脚本识别仍然缺乏良好的识别率。由于有一个 不受约束的手写脚本单词的高度可变性 比单字符识别困难得多。实现 可接受的结果,上下文必须由给定的词典来限制 所有可能的单词。唯一可访问的信息是二进制 草书文字的图像。由于栅格数据的处理是 繁琐的连接性分析是第一步。 此后,有必要尽可能减少可变性 不会丢失相关信息。因此,一些标准化步骤 角度,旋转笔划宽度和大小。的归一化技术 介绍了作者的系统和随后的特征提取。 所提出的算法非常有效,因为它们基于 连通性分析提供的轮廓信息

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