Integrated segmentation and recognition of connected Ottoman script
Date
2009-11Source Title
Optical Engineering
Print ISSN
0091-3286
Publisher
S P I E - International Society for Optical Engineering
Volume
48
Issue
11
Pages
1 - 12
Language
English
Type
ArticleItem Usage Stats
136
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96
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Abstract
We propose a novel context-sensitive segmentation and recognition method for connected letters in Ottoman script. This method first extracts a set of segments from a connected script and determines the candidate letters to which extracted segments are most similar. Next, a function is defined for scoring each different syntactically correct sequence of these candidate letters. To find the candidate letter sequence that maximizes the score function, a directed acyclic graph is constructed. The letters are finally recognized by computing the longest path in this graph. Experiments using a collection of printed Ottoman documents reveal that the proposed method provides >90% precision and recall figures in terms of character recognition. In a further set of experiments, we also demonstrate that the framework can be used as a building block for an information retrieval system for digital Ottoman archives. © 2009 Society of Photo-Optical Instrumentation Engineers.
Keywords
Connected scriptsHistorical document analysis
Information retrieval
Optical character recognition
Building blockes
Context-sensitive
Directed acyclic graphs
Integrated segmentation and recognition
Longest path
Precision and recall
Recognition methods
Score function
Experiments
Search engines