White/Black Points Setup; Auto Clipping; Output Levels - Microtek ScanMaker 6400XL Reference Manual

White/Black Points Setup

White point is a reference point that specifies the lightest area in an image,
making other areas to be adjusted accordingly. Likewise, black point is the
darkest reference area.

Auto Clipping

Auto white point clipping: For the lightness channel, you can assign black or
white level for clipping. To the White Point, colors under the percentage you
assigned are mapped to white; similar situation can be applied to the Black Point.

Output Levels

Minimum output level: For the lightness channel, you can assign minimum or
maximum level for clipping. To the Minimum level, colors under the percentage
you assigned are cropped out; similar situation can be applied to the Minimum
level.
22 Microtek ScanWizard Pro for Windows