User`s guide

Chapter 1:Introduction to Image Processing
2 - ScanShop User’s Guide
Monitor Resolution
Monitor resolution is the measure of the dpi which can be displayed on your
monitor screen. A critical fact of scanning is that no matter how high your scan
resolution is, you will only be able to view the image at the dpi supported by your
monitor.
Scanner Resolution
Scanner resolution on the other hand, is the number of dots per inch that a
scanner is capable of capturing. ScanShop allows you to designate a dpi which
may be higher or lower than the base or true optical capability of your scanner.
The scanner always scans at its base resolution but may have the ability to
interpolate or extrapolate to other resolutions you specify. The following is a list
of the base resolutions of some scanners supported by ScanShop:
Output Device Resolution
Output device resolution is a measure of the output dpi capability of your printer
or other such peripheral. Most laser printers produce output images at 300 or 600
dpi while imagesetters offer between 1270 and 3386 dpi.
Bit Resolution
Bit resolution, sometimes called “depth”, is a measure of the number of bits per
pixel. The number of shades or colors that can be represented as output from a
scanned image is a function of the bit resolution. The higher the number of bits
Table 1:
Scanner Resolution
Epson ES-300C 300 dpi
Fujitsu 3096G/H 400 dpi
Hewlett-Packard ScanJet 3C 400 dpi
Ricoh IS50 400 dpi
Ricoh IS60 600 dpi
Sharp JX-610 600 dpi