WP3: Image Segmentation - OCR Stavros Perantonis, Vassilis Maragos Edinburgh, March 6-7, 2003 Institute of Informatics & Telecommunications NCSR “Demokritos”

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Presentation transcript:

WP3: Image Segmentation - OCR Stavros Perantonis, Vassilis Maragos Edinburgh, March 6-7, 2003 Institute of Informatics & Telecommunications NCSR “Demokritos”

© NCSR, Edinburgh, March 6-7, 2003 Banner Recognition

© NCSR, Edinburgh, March 6-7, 2003 Banner characteristics -Low resolution -Graphics, noiseless -Anti-aliasing -Color contrast visible by the human eye -Text body of restricted thickness

© NCSR, Edinburgh, March 6-7, 2003 OCR Input Original image: B/W OCR input: B/W OCR input after Text Area Enhancement Pre-processing Tool:

© NCSR, Edinburgh, March 6-7, 2003 Text Area Enhancement Pre-processing Tool

© NCSR, Edinburgh, March 6-7, 2003 Text Area Enhancement Pre-processing Tool

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© NCSR, Edinburgh, March 6-7, 2003 Next Steps  Automatic Evaluation of the Text Area Enhancement Pre- processing Tool (create Ground Truth Annotations – record improved Recognition Rates for letters/words).  Parameters fine tuning for the Text Area Enhancement Pre- processing Tool (resolution, number of iterations)  Select the appropriate OCR engine.  Train the OCR engine for better results.  Add CROSSMARC lexicons - Post-processing technique to increase recognition accuracy  Integration with NERC, Delivery of an Ellogon-based application

 Unsurpassed Accuracy. Thanks to its use of IPA Technology, FineReader has an unprecedented recognition accuracy. FineReader has come out on top in comparative tests.  Impeccable Layout Retention. New recognition procedures retain the look and feel of your printed documents, be it wrap-around text, vertical text, columns, tables, non-rectangular pictures or varying fonts. Wide range of document saving formats is supported.  PDF Input and Output. Recognize, edit and save documents in PDF format. Dozens of multilanguage fonts included!  Full HTML Support.  FineReader is a Pleasure to Use.  Batch Document Support provides you with the tools you need to work with multipage documents.  The Spelling-check system  Multilingual Document Recognition. FineReader is the leading multi-national OCR software. It recognizes texts in 122 languages  Quick Export to Microsoft Word, Excel and Outlook. FineReader 6.0: Key Features

 Unmatched Combination of Accuracy and Speed. Less editing, increase in performance.  PDF Input. Open PDF documents (even read-only!), and convert them into editable files you can send directly to your favorite application.  Page Orientation and Image Deskew. Automatically detects the document orientation and the text skew.  Powerful Adjust Image Option. Restore degraded documents with manual or automatic image adjustments and despeckling options.  Color Document Recognition. Recognizes color documents and text on colored backgrounds. Retains any pictures in color on the output file.  Foreign Language Support. Recognizes up to 104 different languages:  New User Interface. The new user-friendly interface includes a redesigned thumbnail bar and guides you intuitively through the different recognition steps.  Flowing Text Mode. Thanks to the powerful Autoformat™ technology, pictures, graphics and tables are positioned correctly and the text nicely flows accross columns or pages.  New "Send To" Mode. The new “Send To” mode automatically sends the output result to the selected application such as Microsoft® Word, Microsoft® Excel, etc.  Multipage documents/batch OCR ReadIris 8: Key Features