Canon CanoScan FB 630U User Manual - Page 73

Color Matching, Complementary colors, Contrast, Curve chart, Contrast/Brightness, Gamma, Histogram

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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

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Top
Page
Glossary
Contents
Index
73
Glossary
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.