ScanSoft Pro 12 ScanSoft Manual de usuario descargar pdf (Pagina 28)

PaperPort Getting Started Guide 28

Set black

point

Click this tool, then click on a dark color in the

image that will become the black point. The colors

chosen for the new white and black points are

displayed on the Status bar.

Apply

current

black and

white points

Click this tool to apply the new black and white

points to the current image. If the result is not

acceptable, undo your changes and pick new values.

Changing the black and white points

You can do this to improve image quality by removing the very dark and

overexposed areas. All colors lighter than your chosen new white point will

become white. All colors darker than your chosen new black point are set

to black. A typical use for this is to remove a shaded gray background in a

document you want to OCR. Select one of the darker gray pixels from the

background and apply it as the white point. Then the background will

become white. Changing black and white points for a color photo will

typically increase its contrast, but may also change color values.

You can apply new black and white points to individual images, as

described. You can also apply them as an auto-enhancement to all new

pages scanned with a given scan profile.

ault

New white

efa

ult

New blac

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ScanSoft Pro 12 ScanSoft Manual de usuario Pagina 28