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Chapter 3 Processing documents 37
Image Enhancement Tools
The Image Enhancement tools can also be used to edit primary images to save and use them as
image files. The following tools are accessible on the toolbar from left to right; their usage is
detailed as follows:
P - affects Primary image only.
O - affects OCR image only.
PO - can be applied to either the Primary or OCR image (or both)
P+O - a single action is applied to both the Primary and OCR image.
P/O - affects both images.
WH - applies to whole images only.
AR - can be applied to selected image areas.
Pointer (F5) - the Pointer is a neutral tool carrying out different operations under
different circumstances (for example, to pick a color for the Fill operation, or to catch the
deskew line.) PO.
Zoom (F6) - click the tool then use the left mouse button to zoom in on your image or the
right mouse button to zoom out. You can also use the mouse wheel for zooming in and
out - even in the inactive view. In the active view the "+" and "-" buttons serve the same
purpose. P+O. WH.
Select Area (F7) - click this, then on a tool that can work on a page area (marked AR)
and draw your selection on the image. Image enhancement tools by default work on the
whole page. Selection has three modes (in the View menu): Normal, Additive, and
Subtractive. PO. AR.
Primary/OCR Image - click this tool to switch between the primary and the OCR image
in the active view. Primary images can be of any image mode, while an OCR image is its
black-and-white version, generated purely for OCR purposes. P/O. WH.
Synchronize Views - click this tool to zoom and scroll the inactive view to the same
zoom value and scroll position as the active view. To make the inactive view dynamically
follow the focus of the active one, click View then choose the Keep Synchronized
command. PO. WH.