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
Содержание AD 250F
Страница 1: ...Document Scanner User s Manual Regulatory model DL 1409B Avision Inc...
Страница 24: ...User s Manual 3 6 5 Verify that the paper guides are aligned with the edges of the stack...
Страница 26: ...User s Manual 3 8 Slide UP the Paper Width switch to set your paper width larger than 216 mm 8 5 in...
Страница 39: ...User s Manual 4 5...
Страница 48: ...User s Manual 4 14 Error Diffusion Image Dynamic Threshold Dynamic Threshold AD...
Страница 51: ...User s Manual 4 17 Normal Photo Document Threshold 230 Normal Photo Document Threshold 230...
Страница 64: ...User s Manual 4 30 The Compression tab dialog box...
Страница 68: ...User s Manual 4 34 The Color Dropout dialog box...
Страница 124: ...User s Manual 7 4 5 Press and wipe the rollers one by one Rotate the roller until the surfaces are completely cleaned...
Страница 128: ...User s Manual 7 8 3 Close the reverse roller Cover 4 Close the ADF cover...