Canon CanoScan N670U CanoScan N670U/N676U/N1240U ScanGear CS-U 6.2 for Win/Mac - Page 102
TWAIN, Underexposed, Unsharp Mask, White-point, Width, Width-Height ratio
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Glossary Contents Troubleshooting Glossary Index TWAIN TWAIN refers to an industry standard for transferring information from devices (such as a scanner or digital camera) to your computer. One interpretation of the acronym is "Technology Without An Interesting Name." Underexposed A dark photographic image that was exposed to too little light when it was photographed. Unsharp Mask Sharpens an image, like a photograph that is slightly out of focus, by emphasizing the contrast to make outlines more clear. USB An abbreviation of Universal Serial Bus, an interface for external devices connected to a computer and easilly used simply by plugging and unplugging the USB cable while the computer is switched on. White-point The lightest portion of the image scanned as Color or Grayscale. When you click on the image with the White-point eyedropper, all tones lighter than the selected sample tone are adjusted to white. Width The Width text box contains the width of the current selection or, if there is no selection, the maximum horizontal output size, based on the currently selected paper size. Width-Height ratio Proportion of the image. To keep the width-height ratio intact, click the Keep Proportions button before changing the width or height values. 102