Xerox
®
DocuMate
®
3220
User’s Guide
131
• Auto detect color—Determines if a document contains color or not and produces the
appropriate scanned image. Typically, Auto Color Detect is used when you have a stack of
pages to scan, some color and others not. Instead of you having to change the scan settings
from Color to Black&White and back again, the scanner can choose the correct settings
automatically.
•
Skip blank originals—Recognizes when a page is blank and removes its image. For instance, if
you are scanning a stack of pages that includes a blank page, its image will not be included
with the other images from the stack.
•
Rotate image—Select an option in this list to have the final image rotated when scanning is
complete.
•
Perform edge cleanup—Select this option to have the software remove any thin lines that may
be around the edges in the scanned image. Edge Cleanup only applies if AutoCrop and
AutoDeskew are selected so the software can determine where the edges are located.
Therefore, selecting Edge Cleanup will also select AutoCrop and AutoDeskew. This option is
only available when scanning in Black&White.
•
Despeckle—Speckles are small spots on an image that the scanner interpreted as a valid part
of the document. The Despeckle option identifies these spots and removes them. This option
is only available when scanning in Black&White.
•
Color dropout—color dropout is the ability of your scanner to automatically remove a color
from a scanned image. For example, if you are scanning a letter with a red watermark, you
can choose to filter out the red so the scanned letter just shows the text and not the red
watermark. Color dropout applies to Black & White or Grayscale scanning modes.
•
Bit depth reduction—Click the drop down menu and select an option from the list. The Bit
depth reduction options are only available when scanning in black and white.
Error diffusion, Bayer, and Halftone patterns are the intentional application of noise
(dithering) in the image to help alleviate banding when scanning in binary (black and white)
mode. For example, if you scan a color photo in black and white, the image file will have large
blocks of black and white and the image barely recognizable. Dithering the image creates a
black and white image that is recognizable.
Dynamic threshold attempts to evaluate the scanned page and automatically adjust the
brightness and contrast levels to produce the best quality image when scanning in black and
white.
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