Form classification using DP matching
SAC '00 Proceedings of the 2000 ACM symposium on Applied computing - Volume 1
A Tabular Survey of Automated Table Processing
GREC '99 Selected Papers from the Third International Workshop on Graphics Recognition, Recent Advances
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DAS '98 Selected Papers from the Third IAPR Workshop on Document Analysis Systems: Theory and Practice
Precise Table Recognition by Making Use of Reference Tables
DAS '98 Selected Papers from the Third IAPR Workshop on Document Analysis Systems: Theory and Practice
A statistical and combinatorial approach to text file layout inference
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Ruling-based table analysis for noisy handwritten documents
Proceedings of the 4th International Workshop on Multilingual OCR
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This paper presents a novel method for table structure analysis. Many documents have table areas, and some have both table and figure areas. It is very important to be able to classify table and figure areas automatically. Furthermore, in tables, the column and row in which a character string is located are very important pieces of information. To detect and analyze table areas, the following method is applied: First, areas that may contain tables or figures are distinguished from text areas by the presence of horizontal and vertical lines. Next, the areas are assumed to be table areas and are analyzed as such. A judgment is made on whether each of the areas can in fact be a table area or not; in this way, the actual table areas are detected. Finally, the structures of the areas are analyzed and character strings in the areas are arranged by using the DP matching method. This method was applied to sixty-five pages of Japanese technical papers, magazines, manuals for software programs, and pages including 34 table areas, 48 line drawing areas, and 35 image areas. As a result, 96.6 percent of the areas were detected correctly and 91.7 percent of the tables were analyzed and arranged correctly.