Xerox DocuMate 4830 Benutzerhandbuch Seite 163

For example, if the radius is 3 and the number is 5, then the document is evaluated in sections of 3x3 pixels and if
there are more than 5 stray dots within a 3x3 area, they are not considered a speckle.
Filter
Use the Filter option to increase or decrease the sharpness in the scanned image. Click the drop down menu and
select an option from the list. Use the Mask slider to adjust the tolerance level of the filter.
Color Management
Select this option to use the scanner's default Gamma table which has been calibrated to produce the best quality
results for your scanner. When this option is not selected, you may need to manually adjust the Gamma, Brightness
and Contrast settings. Please refer to the sections describing Gamma,
about the features and how to adjust the settings.
Color Dropout
Color dropout tells the scanner and software to remove a specific color from the image. You can choose either Red,
Green, or Blue, or define a custom color, to be dropped out of an image.
To input a custom color using its RGB value, select Custom in this list and then input the values for R, G, and B in
their appropriate boxes, where R, G, and B are numbers from 0 to 255.
Tolerance—use the slider to adjust the precision of the color dropout.
More precise—this option removes a range of colors closest to the pure color selected or defined in the
•
custom fields. For example, pure red has an R/G/B value of 255/0/0. Selecting Red indicates that the scanner
should look for a range of RGB reds close to pure red and remove them from the image.
More approximate—this option removes a wider range of colors based on the pure color selected in the list or
•
defined in the custom fields.
Brightness and Contrast for more information
Xerox DocuMate 4830
User's Guide
163