Dropout tab

The Dropout tab displays the Image Mode, Mode and Toggle Patch

 

information that was previously described. Refer to the section entitled

 

“Main tab” earlier in this chapter for descriptions.

Color Dropout

Color dropout is used to eliminate a form's background so that only the

 

entered data is included in the electronic image (i.e. remove the form's

 

lines and boxes). For black and white images, these settings effect the

 

grayscale version of the document which the scanner analyzes to

 

produce that electronic image. You can select a Red, Green or Blue

 

dropout color.

 

Background Value: allows you to select the grayscale value to replace

 

the dropped color with. It is suggested that this value be higher than the

 

Threshold value selected on the Adjustments tab in order for the

 

dropped color to appear to be part of the background. The values range

 

from 0 to 255. Default: 245.

 

Threshold Value: allows you to adjust how the scanner identifies the

 

color to be dropped. The values range from 0 to 255. Default: 175.

 

Enhanced Processing — enable or disable this option to achieve the

 

highest read rate for your production OCR processing. The default is

 

Enabled. For example, if you enable Enhanced Processing and

 

achieve an 87% read rate, and achieve a 93% read rate with this option

 

disabled, then you would disable this option. Compare these

 

percentages with identical image processing parameters and the same

 

document samples.

Blank Image Detection

Use the slider bar to select the minimum image size that the scanner

 

will consider to be non-blank. Any image that is less than this value will

 

be considered blank and will not be given to the scanning application.

 

The values range from 1 to 1000 KB (1 KB equals 1024 bytes). You

 

must specify a blank image size for each image type (Black and White,

 

Grayscale, and Color) you want to delete. The default is None, which

 

means you keep all images.

A-61580 November 2007

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Kodak A-61580 manual Dropout tab, Color Dropout, Blank Image Detection