Tech Tips

• New Features for Volumes


• Export Options


• Workflow 8 Highlights


• Multi-Value Template Fields


• Workflow 8 E-mail Notifications


• Using Search to Manage Documents
  
  
• Avoiding Bottlenecks in Server Performance
  
  
• Non-Retrievable File Deletion
  
  
• Customizing WebLink to Open to the Search Page
  
  
• Laserfiche Records Management: Terminology Guide
  
  
• Performing Image Enhancements for Basic Scanning and OCR Options
  
  
• Bypassing Repository Selection
  


• Dragging and Dropping Text in the Laserfiche Client


• Using Windows Authentication with Windows Groups

• Technical Glossary

Performing Image Enhancements for Basic Scanning and OCR Options:

Brian Sabin, December 2006

You can use Image Enhancements to clean up images, either during the scanning process or when OCRing documents already contained in the repository. Image enhancements allow you to enhance your scanned images to make them clearer and produce better text.

Although the same options are available in Basic Scanning and OCR Options, they are applied in slightly different ways.  In Basic Scanning, image enhancements permanently change the image (with the exception of Line Removal; see below for more information).  In OCR Options, image enhancements do not permanently change the image; instead, they are applied only for purposes of OCR.

To configure image enhancements in Basic Scanning, click the Enhancements button, or select Enhancements from the Tools menu.  To configure image enhancements for OCR, open the Tools menu and select Options. From the Options menu, select OCR and click the Configure button; this will affect documents when they are OCRed in the Laserfiche Client.

There are four image enhancements in Basic Scanning and OCR Options:

Deskew: Straightens images that are slightly askew (for instance, pages that were not placed in the scanner exactly straight).

Despeckle: Removes small spots and ‘noise’ from the image which might otherwise result in poor OCR results.  You can specify the size, in pixels, of noise that will be removed.

Rotate: Rotates the image, either by a set amount or automatically.

• Automatically:  With automatic rotation, Laserfiche will OCR the image at each possible orientation and set the image to the rotation that produces the most understandable text.  Note that this process can considerably slow the scanning or OCRing process.
• By this amount:  This rotation type rotates all pages by the specified number of degrees clockwise.

Line removal: Removes lines from the image. In Basic Scanning, you can choose to either remove the lines only for OCR purposes – in which case they will be visible on the document in the repository – or permanently.  In OCR Options, line removal will always be temporary.  You can also specify whether horizontal or vertical lines (or both) should be removed.