General
Mode: Select Color if you want color in your output
document. This requires most time and memory. Select Grayscale
to have so-called 'black-and-white' photographs in the output document.
Use this for pages with low or varying contrast and with text on colored
or shaded backgrounds. Select B&W
for black-and-white scanning. This is not suitable if you want photographs
in the output document. Use this for crisp black texts on a white or light
background.
Resolution: Choose
a scanning resolution. The values offered are scanner dependent. In general,
300 dpi is best for OCR accuracy. 400 dpi may be better for very small
print.
Size: Choose the
paper size you will be scanning. This also determines the page size of
the output document.
Orientation: Specify
how the pages will be placed in the scanner. Portrait
means the shorter edge of the page will be parallel to the scanning head.
Landscape means the longer edge
will be parallel to the scanning head.
Source: Select the
scanner source (sheetfed or flatbed) you are going to use.
Brightness: Use this
to make a brightness setting. Good brightness and contrast settings play
an important role in OCR accuracy. If characters are thick and touching,
lighten the brightness. If characters are thin and broken, darken it.
See Optimizing brightness for
examples of optimum and marginal image brightness.
Contrast: Use this
to make a contrast setting. Good brightness and contrast settings play
an important role in OCR accuracy. If a page has low contrast (that is,
not much difference between light and dark) set a high contrast value,
or scan grayscale.
Flatbed
Prompt for more pages: Select
this to be prompted to add more
pages for workflow processing.
Automatically scan pages:
Select this to help you scan multi-page documents efficiently even if
you do not have an ADF. The scanner will start scanning passes automatically,
pausing by the number of seconds you define. A dialog box allows you to
scan immediately, request a longer pause and specify when the last page
is scanned.
Time between scans:
Specify how many seconds the scanner should wait before starting a new
scan. This gives you time to place the next page in the scanner.
Preprocessing
Page rotation: Select
Automatic to have OmniPage check
orientation and automatically rotate an improperly oriented page image,
or select the desired rotation angle or None.
Despeckle image:
Select this to have spots removed from images automatically. If it is
deselected you can still remove spots from an image manually with the
Despeckle tool.
Deskew image: Select
this to have all pages straightened automatically, if necessary.
Look for facing pages:
Select this to process facing pages of an open book as two separate pages
even if they were scanned in one step.
Keep original image resolution:
Select this to keep original resolutions for grayscale and color images
entering the program. Do this if you need high quality image export, for
page image saving and for images embedded in recognized pages. Deselect
this to have grayscale and color images reduced to 75-150 dpi.
Create new document at each
blank page: Select this option to create a separate output document
each time a blank page is found.
