58 Scanning from HP Precisionscan Pro
Changing the black and white threshold
Changing black and white threshold only applies to images using the Black & White Bitmap output type. The threshold is a value in the image that represents the border between black and white. All values in the image that are lighter than the threshold appear as white, and all values darker appear as black.
The image has a default threshold value. Choosing a number closer to zero makes more values appear as white. Choosing a higher number makes more values appear as black.
Threshold at 127
(the default for this image)
Threshold at 45
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To change black and white threshold
1Make sure that Black & White Bitmap is selected on the Output Type menu. The selection should have a dot beside it.
2On the Advanced menu, click Adjust Black & White.
3 Do one of the following:
Drag the slider. | |
Type a new value in the field and press ENTER. | |
Click the Up or Down arrow next to the field. |
To reset black and white threshold
1On the Advanced menu, click Adjust Black & White.
2Click Auto.