A. Output Tabs: Picture Zones
Picture zones are available in mixed output mode. These zones are shown on the tab in the upper right corner of the central window:
After output processing you will see the auto layer (auto-detected pictures highlighted with blue) on this tab:
If the detection was wrong, you have either to add a picture area or exclude part of the automatically recognized picture. To do this, you must create a zone - a closed polygon of arbitrary shape. This zone can have properties of adding/subtracting its area from auto layer. To create such a polygon click the left mouse button consequently on prospective vertices points. The last click should be made on the first vertex - this will close the zone polygon. To delete an unfinished unclosed polygon, just press the ESC key.
When a zone is finally created, its vertices can be shifted. Drag them with mouse. To create a new vertex, just click on the edge of the zone. To delete a vertex, drag the vertex to be deleted over one of its two neighbors. When you click the right mouse button on the zone, a pop-up menu with the Properties and Delete items appears. Selecting "Delete" removes the entire zone. Selecting "Properties" opens window "Zone Properties":
"Subtract from all layers" performs binarization of this zone's content - makes this zone to be black and white - regardless of other zones (manual or automatic) overlapping this zone. "Add to auto layer" makes this zone to be in color after output. "Subtract from auto layer" performs binarization of this zone's content where it doesn"t covered with zones added to auto layer. Overlaying zones and changing their properties, you can set color and b/w areas of the output to match the original page. Take into account the following priority rules:
- "Subtract from all layers" - zone with the highest priority
- "Add to auto layer"
- "Subtract from auto layer" - is not applied to zone with priority 2, but affects zone with priority 4
- Auto layer - zone with the lowest priority
The figure below shows contribution of each zone type in the resulting image:
It is very convenient, that after "Output" stage picture areas are not only highlighted with blue but also blink. This blinking ensures that these zones are well distinguished on the image of any color. Any changing of zone type makes the choice to be the default type for next created zones. To determinate the active one of overlapping zones, you have to select appropriately highlighted commands in the pop-up menu. There is a pair of "Properties" and "Delete" items differently colored for each overlapping zone in the menu. When you hover over them with the mouse, the corresponding area begins to be highlighted with this color:
To view the final effect of the created zones, click the "Output" tab in the upper right corner of the workspace:
