Nuance pagekeeper pro 3 Manuale Utente

An image, such as a scanned paper document, does not have editable 
text characters — it is only a picture. However, PageKeeper’s optical 
character recognition

 (OCR) technology can produce editable and 

searchable text information from images. For example, if you scan a 
recipe into PageKeeper and perform OCR on it, you can find that recipe 
by doing a content search on any of its ingredients.

PageKeeper always performs OCR on image files when they are added 
to PageKeeper’s folder system. You can also specify whether or not 
PageKeeper performs OCR on scanned pages. To do so, make sure 
Perform optical character recognition (OCR) 

is selected in the Scanner 

section of the Options dialog box. 

• Find images based on their textual content 

• Find specific text in an image that is displayed in PageKeeper 

View

• Select a textual area of an image that is displayed in PageKeeper 

View and copy it to the Clipboard as editable text

• Open images as editable text in text-based applications

Performing OCR on an image does not change the image itself. Images 
that have text available display a special icon above their thumbnails. 

The following table describes the image resolutions required for 
performing OCR on images. 

When scanning pages:

When adding image files:

200 or 300 dpi grayscale

200 or greater dpi grayscale

200 or 300 dpi black and 
white

200 or greater dpi black and 
white

75, 100, or 150 dpi color

200 or greater dpi color