Directional mathematical morphology approach for line thinning and extraction of character strings from maps and line drawings

Huizhu Luo, Gady Agam, Its'hak Dinstein

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

29 Scopus citations

Abstract

The use of computer aided design requires line drawings and m p s to be digitized and stored in databases. The input of line drawings and nwps into data bases requires vectorization of lines, and recognition of symbols and characters. This paper addresses two aspects reluted to the input process. The first aspect is an autonwtic algorithm for the separation of character strings ,fona mps. The second aspect is an algorithm .for line thinning. The proposed algorithms are based on directional morphology operations. The character string extraction algorithm is independent of font style, size, and language and is suitable for a variety of nwp styles with straight or curved lines. The presented experimental results demonstrate very good performance of the algorithms even in cases where the character strings touch or intersect lines in the map.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Conference on Document Analysis and Recognition, ICDAR 1995
PublisherIEEE Computer Society
Pages257-260
Number of pages4
ISBN (Electronic)0818671289
DOIs
StatePublished - 1 Jan 1995
Event3rd International Conference on Document Analysis and Recognition, ICDAR 1995 - Montreal, Canada
Duration: 14 Aug 199516 Aug 1995

Publication series

NameProceedings of the International Conference on Document Analysis and Recognition, ICDAR
Volume1
ISSN (Print)1520-5363

Conference

Conference3rd International Conference on Document Analysis and Recognition, ICDAR 1995
Country/TerritoryCanada
CityMontreal
Period14/08/9516/08/95

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