User Guide

Chapter 3
50 VRS User’s Manual
For example, suppose you select 300 DPI in your scanning application and enable the
first level of Accelerated Scanning in VRS. The image scans at 200 DPI to accelerate
scanning speed and VRS translates it to 300 DPI to achieve the desired resolution.
Table 3-6 lists the DPI settings that VRS uses for a typical scanner. Use this table as an
example of how VRS treats DPI settings defined in a scanning application.
Note When you select the first level of accelerated scanning, the image quality is
virtually equivalent to non-accelerated scanning. However, higher levels of
acceleration affect the image quality. Not all scanners increase in speed when you
select accelerated scanning. If your scanner does not offer lower resolutions than the
resolution selected in your scanning application, accelerated scanning will have no
effect.
Table 3-6. Accelerated Scanning DPI Settings for the Typical Scanner
DPI Setting as
Defined in
Scanning
Application
Actual Scan DPI
Setting Level 1
Acceleration
Actual Scan DPI
Setting Level 2
Acceleration
Actual Scan DPI
Setting Level 3
Acceleration
Image Output
DPI Setting
300 240 150 100 300
240 200 150 100 240
200 150 100 75 200
150 150 75 75 150
100 75 75 75 100
75 75 75 75 75