HP SCP Software for s manual Static, White Point Adaptive, Contrast, Text/Background

Static

You can directly change the values.

Click at the black picker and draw a box around the black area of the image that is to serve as a reference. The average color value of the selected area will be assigned to the black point and automatically corrected. If you left-click in the histogram, all colors bars will be set at a given value. If you left-click on the single color bars, you can set the values individually.

White Point

Adaptive

The adaptive values cannot be edited and are calculated for every file.

If the white values contain colors, please check the box CONSI DER CHROMA to remove the colors.

Example: you have scanned a newspaper page. The scanner read white as yellowish. If a filter is calculated for this document without C ONSI DE R CHRO MA , the white of the newspaper will be printed in yellow, whereas the option CO NS I DE R CHROMA ensures the output will be white.

You can see the result in the preview.

If you want to edit the values of the adaptive filter, please click on the button MAKE STATIC .

Static

You can directly change the values.

Click at the white picker and draw a box around the white area of the image that is to serve as a reference. The average color value of the selected area will be assigned to the white point and automatically corrected. If you right-click in the histogram, all colors bars will be set at a given value. If you right-click on the single color bars, you can set the values individually.

Contrast

Once you have set the black and white points, you can further edit these values by altering the CONTRAS T . The value in the left entry field affects the black point by enhancing it, while the right entry field is intended to decrease the value of the white point. The picture contrast will be enhanced as a whole.

Example: the following values are set in the entry fields under the histogram:

Black (left) 30, 30, 30 White (right): 230, 230, 230

If you change the contrast values, the aforementioned values will be modified as follows: Left 0, right 100 ￿ Black: 30, 30, 30, White: 230, 230, 230

Left 10, right 100 ￿ Black: 50, 50, 50, White: 230, 230, 230

Left 0, right 90 ￿ Black: 30, 30, 30, White: 210, 210, 210

Text/Background

With the option TE X T / BACKGROUND , you can edit a black or white point that was set by the program. For example, you can create a filter for the background on the basis of an automatic filter with an edited, more aggressive white point.

This option does not alter the picture contrast but adjusts the black and white point.

63