User`s guide

D-11Glossary
Advanced Image Correction
An integral feature of ScanWizard 5 which includes powerful tools for adjusting or enhancing
your images. These tools include Tone Curve, Brightness & Contrast, Color Correction, Filters,
and Descreen.
Batch scan
A feature of ScanWizard 5 which lets you set up "batches" of jobs beforehand and then allows
you to start the scanning process when you are ready to do so with a simple click of a button.
Bit
The smallest unit of memory in the computer. A bit can be either off or on, representing a value
of 0 or 1. Greater bit-depth translates to more complexity in image information. A single-bit
image, for instance, uses just one bit of data to record each pixel — which is either black or
white. An 8-bit grayscale image contains 256 possible shades of gray, a 24-bit color image can
provide up to 16.7 million possible color combinations, while a 36-bit color image has up to
68.7 billion colors.
Blur
The Blur filters eliminate noise in parts of the image where significant color transitions occur.
The Blur filters include Blur and Blur More.
Brightness
The balance of light and dark shades in an image. Brightness is distinct from contrast, which
measures the range between the darkest and lightest shades in an image. Brightness determines
the intensity of shades; contrast determines the number of shades you get.
Color channel
Refers to the red, green, and blue components from which colors are created.
Color correction
An Advanced Image Correction tool that lets you change the hue and saturation of an image.
Color image
An image type that contains the most complex information (compared to single-bit and
grayscale images). To capture color images, scanners use a process based on the RGB color
model.
Appendix D: Glossary
Cross-referenced entries are indicated in bold type.