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An original or output type containing shades of gray, not just black and
white. In a grayscale image, each pixel contains multiple bits of
information, allowing more shades of gray to be recorded and
displayed. Four bits can reproduce up to 16 levels of gray, and eight
bits can reproduce 256 shades of gray. Grayscale is commonly used
for black-and-white original photographs but is also effective in
maintaining shading in pencil drawings.
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An original composed of a pattern of dots that tricks the eye into seeing
shades of gray or color. Halftones are common in all printed materials.
Scanning halftones instead of photographic originals can result in
lower final image quality.
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The vertical dimension of a scan as it will appear at its destination.
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The lightest portion of an image, usually reproduced as white on the
computer screen or when printed.
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A graphical representation of the concentration of pixels at each
intensity or gray level in the selection area of the scanned image.
Histograms help determine the optimal highlight, shadow, or threshold
value of an image.
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Utility that allows users to use the scanner across the network.
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The software used to select number of copies, destination printer, and
other copy options after a user selects the Copy option on the scanner.
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The scanning software that HP provides for previewing an image
before sending it to a destination; making changes, such as resolution,
resizing, and contrast; and saving images as files.
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The name of the scanner button that starts the HP PrecisionScan Pro
software. See also HP PrecisionScan Pro software.
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An automated feature that sends scanned images directly to a
destination on the Web. Links are available only in English.
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HyperText Markup Language. A language used in creating documents
for the World Wide Web. Documents can be saved in HTML format
and will have an .htm extension.
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The distinctive characteristic of a visible color that enables you to
distinguish it from other colors. Six hues are especially important in
photography, scanning, and printing: red, yellow, green, cyan, blue,
and magenta. Hue is determined by the frequency of the wave of light
that creates the color. See also saturation.