摘要
文章分析了工程图纸图像图文分割的技术特点、关键步骤和基本框架，着重介绍了图文自动分割工具ＳｅｇＣｈａｒ采用的技术，如：（１）自动字符尺寸阈值过滤技术，可使图文分割过程自动化和智能化；（２）任意方向、任意长度字符串检测技术，通过精确ＨＯＵＧＨ空间需求、松弛共线、基于字符串的ＨＯＵＧＨ域更新等策略，提高了字符分割的处理速度，降低了处理的空间复杂度，能够使复杂的中西文字符串得以完整提取．
In this paper, the technical characteristics of text/graphics segmentation of engineering drawings, its critical steps and basic processing framework are analyzed. The SegChar, a practical tool for automatic text/graphics segmentation developed by the authors, is presented. The emphasis is put on two technical respects: (1) the automatic text size threshold method, which makes the processing procedure automatic and intelligent; (2) the probing strategy for extraction of text strings of arbitrary direction and length, which can extract Chinese/Western character strings integrally, and enhances its performance in processing speed, space complexity by introducing the concepts of accurate HOUGH space requirements, collinear relaxation and the string based HOUGH field refreshing method. The performance evaluation of SegChar is given finally.
出处
《软件学报》
EI
CSCD
北大核心
1999年第6期589-594,共6页
Journal of Software
基金
国家"九五"科技攻关项目基金
中国博士后基金
关键词
图像处理
图文分割
SegChar
工程图纸
Drawing image processing, text/graphics segmentation, HOUGH transform, automatic threshold.
