Glossary E-3
Density
The degree of opacity of a photographic image on paper or film.
Dmax
The point with maximum density value in an original or image.
Dmin
The point with minimum density value in an original or image.
DPI
Stands for dots per inch, the measure of
rr
rr
r
esolutionesolution
esolutionesolution
esolution. The greater the dpi number,
the higher the resolution.
Dynamic Range
The density measurement of the darkest and lightest points of the original or
image.
Exposure
The amount of light in an image. The exposure of an image can be changed by
increasing or reducing available light.
File format
The way a graphic file is saved. Several file formats are available for use, and
each one has its own advantages and disadvantages. The most popular file
formats include TIFF, PICT, EPS, and PCX. TIFF is the most widely used file
format.
Filters
Tools that allow you to apply or create special effects to your images. Filters in
your scanning software include Blur/Blur More/Gaussian Blur, Sharpen/Sharpen
More, Emboss, and Enhance Edges.
GCR
Gray component replacement, a technique for reducing the amount of cyan,
magenta and yellow in an area and replacing them with an appropriate level of
black.
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