2-28
Scanning Basics
2. In the Image Type dialog box, select
None
for
B/W Option
,
and then click
OK
.
3. In the Manual mode window, click the
Full Preview
button.
Then click the
Image Controls
button to display the Image
Controls dialog box.
4. Use the
Threshold
slider to change the threshold value,
monitoring the results of your changes in the Preview
window. Adjusting the threshold value can make it easier for
OCR to recognize characters.
Image Controls button
Image Controls dialog box
Summary of Contents for 1640SU - Perfection Photo Scanner
Page 2: ... 2 ...
Page 44: ...2 20 Scanning Basics High Contrast Increases the contrast of dull images Open Shadow ...
Page 54: ...2 30 Scanning Basics ...
Page 98: ...4 10 Calibrating Your System ...
Page 114: ...5 16 Options Paper support Spare paper path guide ADF Document Mat ...
Page 130: ...5 32 Options ...
Page 172: ...6 42 Maintenance and Troubleshooting ...
Page 185: ...Contacting Customer Support B 1 Appendix B Contacting Customer Support Overview B 2 ...
Page 192: ... 6 Glossary ...