Home Page Overview Basic Controls Advanced Controls Special Controls

Image Enhancement How To?

Glossary

Address | A number that identifies the memory location of a peripheral device.
Brightness | The setting that determines the overall whiteness of the image for scanning.
Contrast | A comparison between the lightest and darkest part of an image. Low contrast indicates a very gray image, while high contrast represents highly defined differences between light and dark.
Dithering | Creating dots of different patterns and sizes that fool the eye into seeing various shades of gray.
DPI | Dots Per Inch, a measurement of resolution.
Gray Scale | A range of grays with regular density intervals from white to black. A gray scale image is an image that contains various levels (or shades) of gray.
Halftone | The method of making a black and white image appears to have shades of gray.
Highlight | The brightest area in an original or an image represented in a halftone by the smallest dots or the absence of dots.
Histogram | Graphs the gray scale values distribution of a scanned image.
Image | The bitmapped result of scanning an original.
B/W | An image consisting only of black and white pixels.
Original | The pictorial source in its original form, for example, artwork, a photograph or a transparency.
Pixel | A single dot on a computer monitor or digital image.
Preview Size | A control used to limit the length of previewed image in the scan area. Reducing the length of the preview image saves time.
Preview Window | The view area in the Scanner dialog box, representing the glass plate of the scanner.
Photo/Document Image Type | A scanning mode used to scan non-transparent pictures, graphics and so on.
Resolution | A measure of the fineness of detail that a device can record or produce. The higher the resolution, the finer the detail.
Shadow | The darkest area in an original or an image represented in a halftone by the largest dots.
TIFF | An industry standard image file format supported by many applications.
Transparency Adapter | An adapter installed on a scanner to scan slides, film, and X-rays.
Transparency Scanner Type | A scanning mode used to scan transparency pictures or graphics such as slides, films, and X-ray films.
TWAIN | A protocol developed by leading imaging hardware and software companies to make it easier to integrate input peripherals and applications.