Konica Minolta Kodak i780 Image Processing Guide - Page 33

Image Settings - Adjustments tab - Black and White, Level Bayer Dither

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Image Settings Adjustments tab - Black and White The options available on the Adjustments tab depend on the Scan as selection on the General tab. The following options are based on a Scan as selection of Black and White. Conversion quality - these settings effect how the scanner analyzes a grayscale version of the document which is used to produce the black and white electronic image. • Best (iThresholding): the scanner analyzes each document to determine the optimal settings to produce the highest quality image. This option allows scanning of mixed documents with varying quality (i.e., faint text, shaded backgrounds, color backgrounds) and when scanning with consistent document sets. • Normal (ATP): allows you to determine the optimal settings to produce the desired image quality. This option works best when scanning with consistent document sets. You may also want to use this option if you have difficult documents such that you cannot find a Contrast setting for Best that produces the desired quality. • Draft (Fixed): allows you to select the grayscale threshold used to determine if a pixel is black or white. This option works best for high contrast documents. • 64-Level Bayer Dither, 64-Level 45 Degree Clustered Dot Screen, 64-Level Dispersed Dot Screen, and Error Diffusion: these options are no longer recommended, however, they are still available for use with existing applications that require them. These options are not available with the Kodak i780 Scanner. NOTE: Using these options with Compression Type: Group 4 may produce a much larger file size than Compression Type: (none). A-61504 October 2007 3-15

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A-61504
October 2007
3-15
Image Settings -
Adjustments tab - Black
and White
The options available on the Adjustments tab depend on the
Scan as
selection on the General tab. The following options are based on a
Scan as
selection of
Black and White
.
Conversion quality
— these settings effect how the scanner analyzes
a grayscale version of the document which is used to produce the black
and white electronic image.
•
Best
(iThresholding): the scanner analyzes each document to
determine the optimal settings to produce the highest quality image.
This option allows scanning of mixed documents with varying quality
(i.e., faint text, shaded backgrounds, color backgrounds) and when
scanning with consistent document sets.
•
Normal (ATP)
: allows you to determine the optimal settings to
produce the desired image quality. This option works best when
scanning with consistent document sets. You may also want to use
this option if you have difficult documents such that you cannot find a
Contrast
setting for
Best
that produces the desired quality.
•
Draft (Fixed)
: allows you to select the grayscale threshold used to
determine if a pixel is black or white. This option works best for high
contrast documents.
•
64-Level Bayer Dither, 64-Level 45 Degree Clustered Dot Screen,
64-Level Dispersed Dot Screen,
and
Error Diffusion
: these
options are no longer recommended, however, they are still available
for use with existing applications that require them. These options are
not available with the
Kodak
i780 Scanner.
NOTE: Using these options with
Compression Type: Group 4
may
produce a much larger file size than
Compression Type: (none)
.