Technical information

This chapter provides troubleshooting and other technical information about using OmniPage 16. Please also read the online Readme file and other help topics, or visit the Nuance web pages.


Although OmniPage is designed to be easy to use, problems sometimes occur. Many of the error messages contain selfexplanatory descriptions of what to do – check connections, close other applications to free up memory, and so on.

Please see your Windows documentation or OmniPage online Help for information on optimizing your system and application performance.

On supported file formats, see the Online Help.

Solutions to try first

Try these solutions if you experience problems starting or using OmniPage:

  • Make sure that your system meets all the listed requirements. See the Installation and setup chapter.
  • Make sure that your scanner is plugged in and that all cable connections are secure.
  • Visit the support section of Nuance’s web site. It contains Tech Notes on commonly reported issues using OmniPage. Our web pages may also offer assistance on the installation process and troubleshooting.
  • Use the software that came with your scanner to verify that the scanner works properly before using it with OmniPage.
  • Make sure you have the correct drivers for your scanner, printer, and video card. Visit Nuance’s web page through the Help menu and consult its scanner section for more information.
  • Defragment your hard disk. See Windows online Help for more information.
  • Uninstall and reinstall OmniPage, as described in the section, "Uninstalling the software" in the Installation and setup chapter.

Testing OmniPage

Restarting Windows 2000, XP or Vista in its safe mode allows you to test OmniPage on a simplified system. This is recommended when you cannot resolve crashing problems or if OmniPage has stopped running altogether. See Windows online Help for more information.

To test OmniPage in safe mode:

  1. Restart your computer in safe mode by pressing F8 immediately after you see the 'Starting Windows' message.
  2. Launch OmniPage and try performing OCR on an image. Use a known image file, for instance one of the supplied sample image files.
    • If OmniPage does not launch or run properly in safe mode, then there may be a problem with the installation. Uninstall and reinstall OmniPage, and then run it in Windows safe mode.
    • If OmniPage runs in safe mode, then a device driver on your system may be interfering with OmniPage operation. Troubleshoot the problem by restarting Windows in Step-by-Step Confirmation mode. See Windows online Help for more information.

Text does not get recognized properly

Try these solutions if any part of the original document is not converted to text properly during OCR:

  • Look at the original page image and ensure that all text areas are enclosed by text zones. If an area is not enclosed by a zone, it is generally ignored during OCR. See the section on creating and modifying zones, in the 'Processing documents' Chapter.
  • Make sure text zones are identified correctly. Reidentify zone types and contents, if necessary, and perform OCR on the document again. See 'Zone types and properties' in the 'Processing documents' Chapter.
  • Be sure you do not have an unsuitable template loaded by mistake. If zone borders cut through text, recognition is impaired.
  • Adjust the brightness and contrast sliders in the Scanner panel of the Options dialog box. You may need to experiment with different settings combinations to get the desired results.
  • Use the Image Enhancement Tools to optimize your image for OCR.
  • Check the resolution of the original image. Hover the cursor over a page thumbnail for a popup display. If the resolution is significantly above or below 300 dpi, recognition is likely to suffer.
  • Make sure the correct document languages are selected in the OCR panel of the Options dialog box. Only languages included in the document should be selected.
  • Turn IntelliTrain on and make some proofing corrections. This is most likely to help with stylized fonts or uniformly degraded documents. If IntelliTrain was running, try turning it off – on some types of degraded documents it may not be able to help.
  • Do some manual training, or edit existing training to remove unsuccessful training.
  • If you use True Page as the Text Editor view or for export, recognized text is put into text boxes or frames. Some text may be hidden if a text box is too small. To view the text, place the cursor in the text box and use the arrow keys on your keyboard to scroll to the top, bottom, left, or right of the box.
  • Check the glass, mirrors, and lenses on your scanner for dust, smudges or scratches. Clean if necessary.

Problems with fax recognition

Try these solutions to improve OCR accuracy on fax images:

  • Ask senders to use clean, original documents if possible.
  • Ask senders to select Fine or Best mode when they send you a fax. This produces a resolution of 200 x 200 dpi.
  • Ask senders to transmit files directly to your computer via fax modem if you both have one. You can save fax images as image files and then load them into OmniPage. See “Input from image files” in the Processing documents Chapter.

System or performance problems during OCR

Try these solutions if a crash occurs during OCR or if processing takes a very long time:

  • Check image quality. Consult your scanner documentation on ways to improve the quality of scanned images.
  • Break complex page images (lots of text and graphics or elaborate formatting) into smaller jobs. Draw zones manually or modify automatically created zones and perform OCR on one page area at a time. See “Working with zones” in the Processing documents Chapter.
  • Restart Windows, 2000, XP or Vista in safe mode and test OmniPage by performing OCR on the included sample image files.

If you are performing multiple tasks at once, such as recognizing and printing, OCR may take longer.

Supported file types

Supported image file formats for loading are TIFF, PCX, DCX, BMP, JPEG, JB2, JP2, GIF, PNG, XIFF, MAX, PDF, XPS.

Supported file types for saving recognition results as text are:

  • HTML 3.2, 4.0
  • Microsoft Excel 97, 2000, XP, 2003, 2007
  • Microsoft PowerPoint 97
  • Microsoft Publisher 98
  • Microsoft Word 97, 2000, XP, 2003 (WordML), 2007
  • OmniPage Documents
  • PDF (Normal), Edited, with image on text, with image substitutes
  • RTF Word 6.0/95, RTF Word 97, RTF Word 2000, RTF 2000 ExactWord
  • WordPad
  • WordPerfect 12, X3
  • Text, Text with line breaks, Text - Formatted, Text - Comma Separated
  • Unicode Text, Unicode Text with line breaks, Unicode Text - Formatted, Unicode Text - Comma Separated
  • Wave Audio Converter (to save recognized text being read aloud)
  • In OmniPage Professional 16 there is also support for: eBook, Microsoft InfoPath (for forms), Microsoft Reader, and XML.