GCC Technologies i-Craft User Manual page 31

‧ Monochrome - will trace as if the image is a black and white image.
Contrast: this value will determine the cutoff to whether parts of the
image should be traced. When you adjust the contrast value, the preview
will change to a black and white image showing what parts of the image
will be traced. To see trace results, click the "Update Preview" button.
‧ Color layers - will segment the image into the specified number of colors.
Max Colors: the maximum number of colors to segment the image in to.
You can turn off colors by clicking on the color boxes. To see trace results,
click the "Update Preview" button.
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