User`s guide

Appendix A:Scanner and Printer Specific Features
ScanShop User’s Guide - 99
Filtering
Image filtering has the effect of smoothing the image, as local clusters of pixels
are averaged.
Dithering
Dithering can help make a black-and-white scan represent gray images. It does
this by varying the size of clusters of black pixels. When viewed at arm’s length,
the dots blur, and the resulting image appears to have gray tones.
The list of available dither patterns depends on the particular scanner selected.
For this scanner, the following are available:
• none
• Coarse Fatting
• Fine Fatting
• Bayer Dither
• Vertical Line
The larger the pattern area, the more gray levels that can be represented, but with
a grainier result. Dither patterns can also be downloaded to achieve special
effects.
Matrix Coefficient
Selection of matrix coefficients lets you slightly alter the colors of scanned
images, so that the colors of the image on the final output device correspond more
closely to those of the original scanned image.
Tone Map
Setting of the tone map is an image enhancement feature of the Hewlett-Packard
scanners.
Scanner Reports
This is a small text display area that shows information about the scanner you are
using. Information here will include ROM version information and other
information that particular scanner models report about themselves.