Table of Contents
Advertisement
Zone processing
A-63054 February 2004
Zone processing in the i800 Series Scanners allows you to define different
zones for bitonal and color images when dual-stream scanning. It is
particularly useful, for example, in insurance applications where a claim form
may contain a photograph of a damaged vehicle, and so forth. With Zone
processing, you can produce a bitonal image of the entire claim form while at
the same time producing a color image that contains only the photograph.
When Zone processing is selected, scanned pages will always be auto-
cropped (and optionally deskewed) in the scanner. Zone definitions for each
image (as defined in the Mask tab of Image Setup in Capture Software) are
based on the upper left corner of the auto-cropped page.
In Capture Software, when Zone processing is enabled, all of the images
selected must have a zone definition in the Mask tab. As a result, Capture
Software assumes that Zone processing will only be done when scanning
same size documents.
In order to set up Zone processing properly, it is important that each zone
definition (as defined in the Mask tab) must not be larger or fall outside of
the dimensions of the physical pages being scanned. If all zone definitions
do not follow this general rule, then the scanner will report a "Check Document
Preparation" error and scanning will stop.
For example, let's assume that an automobile accident claim form is to be
zone processed. The desired output is a full image of the Front Bi-tonal, Rear
Bi-tonal, and Rear Color. However, for the Front Color, only the picture of the
damaged vehicle is required. The claim form is a letter-size document (8.5 by
11 in.) scanned in portrait mode. The 2 x 2 in. photograph is located five inches
in from the left side and four inches down from the top of the page. The
following zone definitions will achieve the desired result (where the dimensions
of the zone definitions are in 1/100 in.).
Bi-tonal front
Color front
Bi-tonal rear
Color rear
NOTE: Defining a bitonal zone using the Draw mask tool (see the section
entitled "i800 Series Scanners Mask tab") will not produce an accurate
result. When scanning a single page from which to define the zone,
Capture Software configures the scanner for regular auto-crop and
deskew, with Border Framing. Border Framing results in a uniform
black border around all four edges of an auto-cropped and deskewed
image (bitonal only). While Border Framing is not applied to zone-
processed images during production scanning, it is applied by default
when using the Draw Mask function. Therefore, drawing a zone for
zone processing on a Border Framed image will not produce an
accurate zone definition. As a result, you will need to make minor
adjustments to the Left and Top mask settings after drawing a mask for
a bitonal zone definition.
Left
Top
0
0
500
400
0
0
0
0
Width
Height
850
1100
200
200
850
1100
850
1100
9A-17
Advertisement
Table of Contents
