User’s Manual
4-15
Threshold
Used to convert a grayscale image to a
bi-tonal image. The value ranges from 0 to
255. A low threshold value produces a
lighter image, and can be used to subdue
backgrounds and subtle, unneeded
information. A high threshold value produces
a darker image, and can be used to help pick
up faint images.
Adjust the threshold setting by dragging the
Threshold sliding bar to the left or right to
achieve the desired threshold setting.
200 dpi,
Threshold:50,
Brightness: 0
200 dpi,
Threshold:100,
Brightness: 0
Summary of Contents for AD8120U
Page 1: ...Document Scanner User s Manual Regulatory model FT 1907B Avision Inc...
Page 12: ...User s Manual 1 5 1 4 Removable Parts Pick up Roller ADF Roller Reverse Roller...
Page 37: ...User s Manual 4 5...
Page 46: ...User s Manual 4 14 Error Diffusion Image Dynamic Threshold Dynamic Threshold AD...
Page 49: ...User s Manual 4 17 Normal Photo Document Threshold 230 Normal Photo Document Threshold 230...
Page 61: ...User s Manual 4 29 The Compression tab dialog box...
Page 63: ...User s Manual 4 31...
Page 67: ...User s Manual 4 35 The Color Dropout dialog box...
Page 127: ...User s Manual 7 7 3 Pull down the tab to remove the ADF roller ADF Roller...
Page 129: ...User s Manual 7 9 4 Lift up and close the ADF Roller Cover as indicated...