Optical recognition of chemical graphics

Author

Casey, Richard ; Boyer, Stephen ; Healey, Paul ; Miller, Alex ; Oudot, Bernadette ; Zilles, Karl

Author_Institution

IBM Almaden Res. Center, San Jose, CA, USA

fYear

1993

fDate

20-22 Oct 1993

Firstpage

627

Lastpage

631

Abstract

A prototype system for encoding chemical structure diagrams from scanned printed documents is described. The system distinguishes a structure diagram from other printed material on a page image using size and spacing characteristics. It distinguishes line graphics from symbols in an intermediate vectorization stage. Line information is mapped into a connection diagram that represents atomic bonds. Atomic symbols are identified by means of chemical drawing conventions and optical character recognition. The final coded output interfaces to conventional chemistry software for database storage and retrieval, publishing, and modeling

Keywords

chemistry computing; diagrams; document image processing; image recognition; optical character recognition; atomic bonds; chemical drawing conventions; chemical graphics; chemical structure diagrams; chemistry software; connection diagram; database; information retrieval; information storage; line graphics; modeling; optical character recognition; optical recognition; prototype system; publishing; scanned printed documents; size; spacing; vectorization stage; Atom optics; Character recognition; Chemicals; Chemistry; Databases; Encoding; Graphics; Optical character recognition software; Optical materials; Prototypes;

fLanguage

English

Publisher

ieee

Conference_Titel

Document Analysis and Recognition, 1993., Proceedings of the Second International Conference on

Conference_Location

Tsukuba Science City

Print_ISBN

0-8186-4960-7

Type

conf

DOI

10.1109/ICDAR.1993.395658

Filename

395658