ORIS PDF Tuner Version 4.4.8 User Manual - image2output - Support

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Creating Masks and Cut-outs
Creating Pixel Masks Using Brush
Note:
move the cursor, some pixels of the previous cursor position are always
masked. If all or none of the pixels within the brush are masked, the reference
color does not change.
This facilitates e.g. masking along edges where the color selected as the
reference color changes only slightly. In this case you can paint rather
continuously, i.e. without having to change the reference color or tolerance
frequently. You can at any time define a new reference color by reselecting
REFERence COLOR.
For more details refer to Painting and Erasing above.
The DYNamic REFERENCE function is not available if the INVERT REFerence
mode is active (see below).
‘Tolerance’ Function
Automatic masking will not only affect the specified reference color but
also similar colors. The extent by which this is done depends on the tolerance.
You can specify values ranging from 0 (only the reference color is
masked) to 100 (all colors are masked).
1. Select TOLERANCE in the MENU window. Alternatively, CTRL-click (Mac
OS) or right-click (Windows) on the image window.
2. To change the tolerance, hold SHIFT and the mouse button pressed
down and move the mouse vertically. Or enter the value on the keyboard
(direct input, see page 29-7).
At the position where you brushed last, the number of masked pixels
varies according to the tolerance value.
3. Click on the image window or reselect TOLERANCE.
Tip:
When you draw a line along an edge, for example, you can change the
tolerance in order to find out the threshold value which masks exactly
those pixels which belong to the area to be cut out. In this case set the
tolerance to 0 and increase this value gradually until the mask color appears
at the position you want.
ORIS PDF Tuner Version 4.4.8 User Manual 21-9
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