Optical Character Recognition: An Illustrated Guide to the FrontierOptical character recognition (OCR) is the most prominent and successful example of pattern recognition to date. There are thousands of research papers and dozens of OCR products. Optical Character Rcognition: An Illustrated Guide to the Frontier offers a perspective on the performance of current OCR systems by illustrating and explaining actual OCR errors. The pictures and analysis provide insight into the strengths and weaknesses of current OCR systems, and a road map to future progress. Optical Character Recognition: An Illustrated Guide to the Frontier will pique the interest of users and developers of OCR products and desktop scanners, as well as teachers and students of pattern recognition, artificial intelligence, and information retrieval. The first chapter compares the character recognition abilities of humans and computers. The next four chapters present 280 illustrated examples of recognition errors, in a taxonomy consisting of Imaging Defects, Similar Symbols, Punctuation, and Typography. These examples were drawn from large-scale tests conducted by the authors. The final chapter discusses possible approaches for improving the accuracy of today's systems, and is followed by an annotated bibliography. Optical Character Recognition: An Illustrated Guide to the Frontier is suitable as a secondary text for a graduate level course on pattern recognition, artificial intelligence, and information retrieval, and as a reference for researchers and practitioners in industry. |
Contents
Introduction | 1 |
Imaging Defects | 7 |
21 Heavy Print | 10 |
22 Light Print | 27 |
23 Heavy and Light Print | 44 |
24 Stray Marks | 47 |
25 Curved Baselines | 57 |
Similar Symbols | 61 |
Typography | 113 |
51 Italics and Spacing | 116 |
52 Underlining | 126 |
53 Shaded Backgrounds | 131 |
54 Reverse Video | 135 |
55 Unusual Typefaces | 146 |
56 Very Large Print | 151 |
57 Very Small Print | 158 |
Other editions - View all
Optical Character Recognition: An Illustrated Guide to the Frontier Stephen V. Rice,George Nagy,Thomas A. Nartker No preview available - 1970 |
Optical Character Recognition: An Illustrated Guide to the Frontier Stephen V. Rice,George Nagy,Thomas A. Nartker No preview available - 2013 |
Common terms and phrases
abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz 0123456789 appear article photo caption bi-level image BRIDGE PARKWAY curved baselines Department of Energy Device digits Energy technical report errors examples Garth Brooks Geological Survey technical Ghostbusters II heavy print Id Page Text identify imaging defects ISRI italics journal article kerned Laboratory technical report LAKE BONNEVILLE Las Vegas letterhead lexicon Light Print Linda Blvd magazine article photo magazine article title Mines technical report Nartker National Laboratories technical Nevada Bureau newspaper article headline OCR output OCR systems Optical Character Recognition Pattern Recognition Pinus longaeva pixels punctuation quotation marks RANCHO MIRAGE recognize report figure caption report U.S. Geological Research reverse text reverse video Sandia National Laboratories scanner scanning Section serif Shaded Backgrounds Similar Symbols space stray marks Survey technical report technical report figure technical report table technical report U.S. three systems Typography U.S. Geological Survey Underlining University of Nevada uppercase vertical strokes vertical symbol word Yedioth Ahronoth