CONTENTS | Glossary | 92 |
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INDEX
Glossary
Acquired Images
Images sent from your scanner software to the host graphics application.
ADF
Automatic Document Feeder, an optional attachment that lets your scanner perform continuous scanning of documents.
Automatic Tone Adjustment
Automatic analysis and adjustment of the image using Contrast/Brightness and Gamma settings.
Bits and Bit Depth
A bit (BInary digiT) is the smallest possible unit of information on a computer; it represents yes or no; on or off; 1 or 0. Bit Depth is used to describe the complexity of a graphic image.
One bit, or bilevel, images are black and white. This is the Black and White setting in ScanGear
Grayscale (8 bit)
Expresses a dot in 256 shades of gray between white and black.
Grayscale (12 bit)
Expresses a dot in 4,096 shades of gray between white and black.
Color (24 bit)
Expresses a dot with 8 bits for each primary color for a total of 24 bits (8 bits x 3 colors=24 bits). A dot can be expressed in up to 16.8 million distinct shades(2563=16.8 million)
High Quality Color (36 bit)
Expresses a dot with 12 bits for each primary color, red, green, and blue (RGB), for a total of 36 bits (12 bits x 3 colors =36 bits). A dot can be ex- pressed in up to 68.7 billion distinct shades (4,0963=68.7 billion)
Black-Point
The darkest portion of an image scanned as Color or Grayscale. When you click on the image with the
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