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• Relative to Document: (zone processing): (used for batches of
same-sized documents) — zone processing is a floating fixed crop
window (the zone) located relative to the upper left corner of a
document. It allows you to select an area on the document to be
delivered in either color/grayscale or black and white format (a
separate window for both black and white and color/grayscale may
be defined). Different parameters may be selected for both the front
and back of the image.
This option may be used in conjunction with Automatic cropping
where a separate color/grayscale or black and white area to be
saved is desired. It is useful in applications where a photograph,
signature, embossment or seal appears in a consistent area for an
application (you may want that small area in color/grayscale and the
rest in black and white). To define a zone, select the Layout tab.
Binarization — these options work on grayscale images and outputs a
black and white electronic image. Their strength lies in the ability to
separate the foreground information from the background information
even when the background color or shading varies, and the foreground
information varies in color quality and darkness. Different types of
documents may be scanned using the same image processing
parameters and results in excellent scanned images.
• iThresholding: allows the scanner to dynamically evaluate each
document to determine the optimal threshold value to produce the
highest quality image. This allows scanning of mixed document sets
with varying quality (e.g., faint text, shaded backgrounds, color
backgrounds) to be scanned using a single setting thus reducing the
need for document sorting. When using iThresholding, only Contrast
can be adjusted.
• Fixed Processing (FP): used for black and white and other high
contrast documents. If Fixed Processing is selected, only
Brightness can be adjusted.
• Adaptive Thresholding (ATP): separates the foreground
information in an image (e.g., text, graphics, lines, etc.) from the
background information e.g., white or non-white paper background).
When using Adaptive Thresholding, Brightness and Contrast can be
adjusted. Use this option when scanning similar type documents.
Threshold (Brightness) — this option is available when you select
Fixed Processing or Adaptive Thresholding (ATP). This option
allows you to change the black and white image to be darker or lighter.
The higher the threshold value, the darker the image. Use the slider to
select a value from 0 to 255. The default is 90.
Contrast ⎯ adjusts how much of the faint detail you want to see in the
output image. The higher the contrast value, the more faint lines will be
shown in the image. The lower the contrast value, the clearer (or less
detailed) the output image will be. If contrast is set too high, you may
get lines or black areas in your output image that you do not want. If the
contrast is set too low, some letters or lines may not show in the output
image. Select a contrast value from -50 to 50. The default is 50.
A-61849/ISIS January 2016
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