Operation Manual

8-8 Glossary
Software Reference for Scanners
low-key describes an image where most if not all of the
subject matter has a density range from midtones to
shadows. A predominantly dark picture.
LUT look-up-table — used to transpose one value into
another via some predetermined scheme.
LSB least significant bit — the right-most bit in a binary
code.
palette mapping assigning colors to particular areas of an image
based on shade or some other description. Often
used to produce visually continuous tone color
images when there are very few colors available in
the palette to do so.
moiré an undesirable visible interference pattern created
when dot screens overlap at certain frequencies. This
pattern can be subdued or eliminated through trial
and error and compromise. The angles and
frequencies of the four process screens must be
manipulated to reduce the effect.
MSB most significant bit — the left-most bit in a binary
code.
NB-Handler control panel The National Instruments GPIB interface control
panel device.
ND filter neutral density filter — used to lower density (make
darker) without affecting color balance.
non-volatile memory memory that retains the bit settings after power is
removed from the system.