If images contain unwanted horizontal or vertical lines, you can remove them with the line removal feature. You can also enable character reconstruction to repair text that intersects the lines that are removed.
For best results, follow these guidelines:
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Set the Minimum Length to a large enough value so that text objects, such as the horizontal bar of a capital âTâ, are not mistaken for horizontal lines. Setting a larger value also allows the algorithm to work faster because many objects, such as text, can be ignored when searching for lines.
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Set the Maximum Break to a maximum value of two or three pixels (at 200 DPI). This prevents text characters from being considered horizontal lines to remove.
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From the Configure Scanner Settings | Kofax Options tab, click Line Removal. The Line Removal Properties window appears.
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To activate the horizontal line removal feature, in the Horizontal section, select the Enable check box and set the following properties for this feature:
Property
Description
Minimum Length (pixels)
Sets the minimum length of a horizontal line to remove.
Maximum Height (pixels)
Sets the maximum height (thickness) of a horizontal line to remove.
Maximum Break (pixels)
Sets the maximum size that a run of white speckles in the line can be and still be considered part of the line.
Edge Clean Factor (pixels)
Cleans black speckles at the edge of a horizontal line that has been removed.
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To activate the Horizontal Character Reconstruction feature, select the Enable check box and set the following properties for this feature:
Property
Description
Minimum Repair Height (pixels)
Sets the minimum character height to repair.
Maximum Repair Width (pixels)
Sets the maximum character width to repair.
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To activate the horizontal line removal feature, in the Vertical section, select the Enable check box and set the following properties for this feature:
Property
Description
Minimum Length (pixels)
Sets the minimum height of a vertical line to remove.
Maximum Height (pixels)
Sets the maximum width (thickness) of a vertical line to remove.
Maximum Break (pixels)
Sets the maximum size that a run of white speckles in the line can be and still be considered part of the line.
Edge Clean Factor (pixels)
Cleans up black speckles at the edge of a vertical line that has been removed.
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To activate the Vertical Character Reconstruction feature, select the Enable check box and set the following properties for this feature:
Property
Description
Minimum Repair Height (pixels)
Sets the minimum character height to repair.
Maximum Repair Width (pixels)
Sets the maximum character width to repair.
- Click OK.