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Operating VRS

VirtualReScan (VRS) User’s Guide

Accelerated Scanning Tab

When used with a scanning application that requests a bitonal image, VRS requests a

grayscale image from the scanner. VRS analyzes the grayscale image and produces a

clean, clear, bitonal image that is passed to the application. This means that, when

used with VRS, the scanner never actually produces a bitonal image. Historically,

scanners run at their optimum speed when scanning in bitonal mode and more slowly

when scanning grayscale or color images. This has changed in the last few years,

because nearly all scanners now scan in grayscale mode as fast as they scan in bitonal

mode. In fact, some scanners can even scan in color mode as fast as they do in

grayscale or bitonal modes.

When used with some scanners (old or new) that run more slowly while scanning in

grayscale mode, VRS may appear to be responsible for the slowdown. The perception

is that the application is requesting a bitonal image and VRS is causing the scanner to

run more slowly than usual. In reality, the scanner is running at its rated speed in

grayscale mode, rather than bitonal mode. Most users accept this slight slowdown

because the image quality produced by VRS far outweighs the reduced throughput.

If you prefer your scanner to run at, or near, rated bitonal speed, you can use the

setting on the Accelerated Scanning tab to accelerate the scanner and experience only

a slight reduction in image quality.

Note With some scanners, the Accelerated Scanning setting has no effect.

Interactive The VRS Interactive Viewer opens and displays the image in the VRS

Interactive Viewer, so that you can apply new settings to the current image.

Table 2-5. Action Types for Errors

Action Type Description

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Kofax UP-D005-0001 Guía de usuario Pagina 35