HP SCP Software for s Tab Postprocessing Black & White Mode, Despeckling, To use this filter

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 enter the following values under T E X T / BA C K G R O U N D , 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 (values under 50 become black)

Left 0, right 90 ￿ Black: 30, 30, 30, White: 210, 210, 210 (values over 210 become white)

Tab Postprocessing (Black & White Mode)

Despeckling

This option removes black pixels in black & white mode, for example from scans of murky originals. The filter searches for groups of black pixels and converts them into white. Small-sized pixel groups, such as those forming punctuation dots, are kept.

ALL PIXEL NEIGHBORS - Pixels are connected neighbors when there is a series of 8 (instead of 4) adjacent pixels, i.e. additionally to pixels of the same row or column, the diagonally-adjacent pixels are considered to be connected.

FILTER SIZE – It corresponds to the maximum "diameter" of the pixel area which is to be removed.

REL. AREA SIZE – This limits the proportion of the actual maximum number of pixels to the filter size. 0 represents the smallest possible surface relatively to the selected filter size.

To use this filter:

Select an area with black pixels in the preview.

In the zoom window, open the context menu and select the view 2:1 or 4:1. In this view, the removed pixels will appear in light gray.

When you make settings with the despeckling filter, be sure not to remove small elements.

If the unwanted pixels form a round area, set the filter size between 70%-100%. If the pixels stretch on a line, the filter size should lie under 70%.

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