Ngenuity TWAIN Data Source November 19, 2009
Page 99 of 99
Auto Color Detect setting in Main Page is equivalent to Color setting for this purpose.
• Color Drop-Out is not supported in Multistream mode.
JPEG Compression
• JPEG need to be the same for all Windows, that is Main Front and Back Pages and all Sub-
Windows.
• Multistream does not support a mix of compressed and uncompressed JPEG windows.
Resolution
• The minimum Sub-Windows resolution is HALF of the Main Page.
• Sub-Windows resolution will be interpolated by image processing from Main Page resolution if
the Sub-Windows have a different resolution than the Main.
Page Size, Orientation
• Sub-windows Page Size (with Orientation) needs to be smaller or equal to the Main Page (not
withstanding Crop/Deskew off).
Image Settings
• The following parameters can be set differently between Main Page and Sub-Windows: Rotation,
Crop/Deskew, Image Contrast, Image Brightness/Auto-Brightness, Image Gamma (not GUI
exposed), Background Saturation settings and Auto Color Detect settings.
• Camera image settings are set by the Main Page and apply to all Sub-Windows: Camera Gamma
(GUI exposed) and Camera Contrast and Brightness (not GUI exposed).
5.4 F
RONT AND BACK PAGES IMAGES
• Imprinter
: Ngenuity support 2 imprinters, a Front Page Prescan and/or a Back Page Post-scan.
When using the Back Page Post-scan imprinter, the scanner needs to scan in duplex mode, with
Back Page scanning enabled. This dependency is not enforced by the driver.
• Back Page only
: Ngenuity supports Back Page scanning only, but the MultiFeed detection will
not work in this mode and should be disabled. This dependency is not enforced by the driver.
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