HP 4400C Click, Clipped pixels, Converted text, Color balance, Color channel, Color correction

120 Glossary

c

click

To press and release the left mouse button once. Right-click means to press and release the right mouse button once.

clipped pixels

Pixels in an image that are extremely light or extremely dark and that would lose detail when the image is printed or displayed.

CMYK

Cyan, Magenta, Yellow, Black. The color model in which all colors are composed of Cyan, Magenta, and Yellow, the primary colors of pigments like ink, plus Black. Printers use CMYK to print in color.

converted text

Text that has been rendered into digital format by an OCR program.

color balance

The preservation of balance between colors throughout the tonal range. Color balance is particularly important when scanning objects that include neutral tones (grays) or large areas of consistent color.

color channel

The red, green, and blue components from which colors are created.

color correction

The process of adjusting an image to compensate for input and output device characteristics or color flaws in the original image.

Back to TOC

color depth

The number of colors that a monitor can display at once. Most PC monitors display 8-bit color (256 colors), 16-bit color (about 65,000 colors), 24-bit color (about 16 million colors), and 32-bit color. The higher the color depth, the more lifelike images look on screen.

color wheel

A tool used to adjust the color balance and hue.

configure

The ability to adjust settings that determine how the scanner buttons and scanning software perform operations.

context-sensitive Help

Context-sensitive Help answers questions related to specific features in the currently displayed window. The Help is provided in six ways: Text Labels, ToolTips, What’s This? Help, Smart Friends, Status bar messages, and Help commands.

contrast

The range between the lightest and darkest shades in an image. An image with high contrast has few gray shades between black and white and appears to be dominated by stark light and dark tones. An image with low contrast has many shades of gray and tends to look flat and dull. Change contrast using the highlight, shadow, and midtone settings.

control range

This range determines the number of bits used for exposure compensation, shadow detail, and black-and-white threshold adjustment displays. The higher the bit depth, the finer the level of control in adjusting these image manipulation functions.