Set threshold for black and white bitmaps
When you want to save a black and white image from a color or black and white photograph, you can often improve the result by changing the threshold for the division between black and white pixels.
The black and white threshold can be changed with the Black & White Threshold tool for an image that has the Black & White Bitmap (raster) output type. (See page 34 for more about the Black & White Threshold tool.)
Applying the default threshold
■Click the Auto button in the Black & White Threshold tool.
•The optimal black and white threshold setting determined by the scanning software is applied to the Black & White Threshold tool.
•The result of the change to the threshold setting can be seen in the preview area.
The Black & White
Bitmap (raster) output type and a black and white threshold of 15 applied
Image of a color photograph with the True Color output type
4
Adjusting images of
pictures
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➮HP PrecisionScan Pro User’s Guide | 85 |