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Back to TOC Glossary 125
The balance of light (highlights) and dark (shadows) in an image. In
black-and-white images, the lower the brightness, the closer the image
will be to black. The higher the brightness, the closer the image will be
to white. Brightness should not be confused with contrast, which
measures the range between the darkest and lightest shades in an
image. Brightness determines the intensity of shades in an image,
while contrast determines the number of shades in the image.
c
To press and release the mouse button once.
Pixels in an image that are extremely light or extremely dark and that
would lose detail when the image is printed or displayed.
Cyan, Magenta, Yellow, Black. The color model in which all colors are
composed of Cyan, Magenta, and Yellow, the primary colors of
pigments like ink, plus Black. Printers use CMYK to print in color.
Text that has been rendered into digital format by an OCR program.
The preservation of balance between colors throughout the tonal
range. Color balance is particularly important when scanning objects
that include neutral tones (grays) or large areas of consistent color.
The red, green, and blue components from which colors are created.
The process of adjusting an image to compensate for input and output
device characteristics or color flaws in the original image.
The number of colors that a monitor can display at once. Most
Macintosh monitors can display in 256 grays, 256 colors, thousands of
colors, and millions of colors. The higher the color depth, the more
lifelike images look on screen.
A tool used to adjust the color balance and hue.
The ability to adjust settings that determine how the scanner buttons
and scanning software perform operations.
Context-sensitive Help answers questions related to the currently
displayed window. The Help is provided in four ways: Text Labels,
ToolTips, Info bar messages, and Help commands.
The range between the lightest and darkest shades in an image. An
image with high contrast has few gray shades between black and white
and appears to be dominated by stark light and dark tones. An image