Epson Expression 800 User Manual - TWAIN - Page 63

Glossary, marquee, monochrome, pixel, resolution, Threshold

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marquee A sizeable and moveable frame on a preview image that identifies the part selected for scanning. monochrome Black and white images, or images represented only by the intensity of luminosity. pixel Short for picture element. Every image is composed of a number of pixels. Pixels are also counted in units of dots. resolution Indication of how finely an image is resolved into pixels. Measured in dots per inch (dpi), pixels per inch (ppi), or samples per inch (spi). scan An operation performed by the sensor and the carriage of a scanner. The sensor "reads" the colors in an image, and sends the color information to the computer as digital data. Threshold An EPSON TWAIN Pro option that sets the point at which gray values in an image are represented as either black or white. Glossary Page 63

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Glossary
Page 63
marquee
A sizeable and moveable frame on a preview image that identifies the
part selected for scanning.
monochrome
Black and white images, or images represented only by the intensity of
luminosity.
pixel
Short for picture element. Every image is composed of a number of
pixels. Pixels are also counted in units of dots.
resolution
Indication of how finely an image is resolved into pixels. Measured in dots
per inch (dpi), pixels per inch (ppi), or samples per inch (spi).
scan
An operation performed by the sensor and the carriage of a scanner. The
sensor “reads” the colors in an image, and sends the color information to
the computer as digital data.
Threshold
An EPSON TWAIN Pro option that sets the point at which gray values in
an image are represented as either black or white.