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Photo
: the scanner will locate the photograph on the document and
return an image that contains just the photograph. If the scanner finds
more than one photograph on a document, one image is still returned
which contains all photographs.
Photo with ROI
: is the same as Photo except you may select the
document scan area that is used when finding photos.
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.
