TWAIN Scanning Guide
Image Enhancements
40
User’s Guide
The following example shows the original color image and the inverted image.
Mirror Image
The
Mirror image
option flips the image left-to-right.
Bit Depth Reduction
The
Bit depth reduction
options are only available when scanning in black and white. Click the
drop down menu and select an option from the list.
Threshold and Dynamic threshold
Threshold
enables you to set what level of light or dark to look for on a page. When scanning in
black and white, everything on the page is set to either white pixels or black pixels in the final
image. If the text on the page is a light color, then the text may be gone in the final image as the
scanner will change those light colors to white pixels. The threshold slider lets you set the level of
darkness or lightness of the text on the page.
Dynamic threshold
attempts to evaluate the image
and dynamically adjust the threshold level. These options work best for documents that contain
only text such as business letters, spreadsheets, reports, etc...
Summary of Contents for DocuMate 152i
Page 8: ...TWAIN Scanning Guide Scanning from TWAIN and WIA 4 User s Guide...
Page 20: ...TWAIN Scanning Guide Document Source Configuration 16 User s Guide...
Page 26: ...TWAIN Scanning Guide Presets 22 User s Guide...
Page 52: ...TWAIN Scanning Guide Image Enhancements 48 User s Guide...
Page 62: ...TWAIN Scanning Guide Appendix A Copy Regulations 58 User s Guide...
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