Canon CanoScan FB 630U User Manual page 73

Glossary
Top Page
Glossary
Contents
Index
Color Matching
The range of colors your scanner can see may not match the range
of colors your video monitor can produce. Color matching lets
your system display colors so that the color on your monitor and
printer matches the colors scanned. See also Canon ColorGear
Color Matching.
Complementary colors
Red, green, and blue can be thought of as complementary colors
to cyan, magenta, and yellow. These colors cancel each other out
when combined in equal amounts. Similarly, adding a small
amount of one color reduces its complement by that amount.
Contrast
Contrast refers to the difference between the lightest light and
the darkest dark in the image. A low contrast value indicates that
the difference between dark shades and light shades is not very
great. A high value indicates a great difference between dark and
light shades. While brightness refers to the intensity of tones in an
image, contrast refers to the range and number of tones in an
image.
Crop
The action of selecting part of an image. The Crop button on the
ScanGear CS main window lets you select part of a preview image
and re-preview or scan only that selected part.
Curve chart
The graph displayed in the Tone sheet settings for the Auto Tone,
Contrast/Brightness, Gamma, Histogram, and Special Tone Curves
features. This graph describes the relationship between the color
characteristics of the previewed image and the available feature
settings.
73