Canon CanoScan D1250U2F CanoScan D1250U2 ScanGear CS-U 6.3 for Win Guide - Page 64

tone. The Tone sheet tools include Auto Tone, Contrast/Brightness, Gamma, Threshold, Tone sheet, TWAIN

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Glossary Contents Glossary Index Threshold In a black-and-white image, the threshold is the point at which a gray pixel is determined to become either black or white. The Threshold slider is on the Halftone sheet. Adjust the Threshold value when you are scanning a grayscale or halftone original with the Black and White setting. Tone sheet The Tone sheet contains tools that let you adjust and correct the image tone. The Tone sheet tools include Auto Tone, Contrast/Brightness, Gamma, Histogram, and Special Tone Curves. TWAIN TWAIN refers to an industry standard for transferring information from devices (such as a scanners or digital cameras) to your computer. One interpretation of the acronym is "Technology Without An Interesting Name". Unsharp Mask Sharpens an image, like a photograph that is slightly out of focus, by emphasizing the contrast to make outlines clearer. 64

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64
Glossary
Glossary
Contents
Index
Threshold
In a black-and-white image, the threshold is the point at which a gray pixel
is determined to become either black or white. The Threshold slider is on
the Halftone sheet. Adjust the Threshold value when you are scanning a
grayscale or halftone original with the Black and White setting.
Tone sheet
The Tone sheet contains tools that let you adjust and correct the image
tone. The Tone sheet tools include Auto Tone, Contrast/Brightness, Gamma,
Histogram, and Special Tone Curves.
TWAIN
TWAIN refers to an industry standard for transferring information from
devices (such as a scanners or digital cameras) to your computer. One
interpretation of the acronym is "Technology Without An Interesting
Name”.
Unsharp Mask
Sharpens an image, like a photograph that is slightly out of focus, by
emphasizing the contrast to make outlines clearer.