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9-6 • PlotWorks 5.5 User Guide
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Ordered Dither: This mode works best with photographic images.
Ordered dithering resolves lines very clearly, but it can produce a
somewhat grainy image. Ordered Dither creates larger raster file sizes.
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Error Diffusion Dither: This mode works best with photographic
images and produces very smooth gradients. However, this mode can
diffuse the edges of lines, causing a “fuzzy” look. Error Diffusion Dither
creates larger raster file sizes.
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Bilevel: This mode works best with line art.
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Dither/Halftone: This mode works best with photo or grayscale images.
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Line: This mode works best with line art.
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Photo1: This mode works best with photographic images.
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Photo2: This mode works best with dark prints.
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Text: This mode works best with text prints.
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Photo: This mode works best with photographic images.
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Text and Photo: This mode works best with photographic images and
less than perfect originals.
Use the preset enhancements buttons (below the Configuration and Mode
fields) for common settings, then fine-tune with the arrows. Default settings
depend on the scanner selected. These options allow you to fine-tune the
appearance of your scans by changing darkness, sharpness and other
variables. The specific options that appear depend on your scanner model and
the configuration selected. Click ReScan to test changes.
Possible enhancements are:
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Threshold: Lets you set the point that divides black and white data. Any
scanned data that is lighter than the threshold value will display as white.
Any scanned data that is darker than the threshold value will display as
black. Click the Low, Medium, or High button, or enter a value in the
field.
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Background removal: Lets you remove unwanted specks and smears
from the image background. Click the Light, Auto, or Heavy button, or
enter a value in the field.
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Background bias: If you clicked Auto under Background removal,
you can set a strength here. The higher the strength, the more specks
and smears will be removed from the background.
Edge sharpening: Lets you sharpen the image to make fine lines clearer.
Click the Soft, Normal, or Sharp buttons, or enter a value in the field.