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 AD335F
Page 1: ...Sheet fed Scanner User s Manual Regulatory model DF 1911B Avision Inc...
Page 18: ...User s Manual 1 9 1 6 Removable Parts ADF Roller Friction Roller...
Page 53: ...User s Manual 4 5...
Page 62: ...User s Manual 4 14 Error Diffusion Image Dynamic Threshold Dynamic Threshold AD...
Page 65: ...User s Manual 4 17 Normal Photo Document Threshold 230 Normal Photo Document Threshold 230...
Page 78: ...User s Manual 4 30 The Compression tab dialog box...
Page 82: ...User s Manual 4 34 The Color Dropout dialog box...
Page 141: ...User s Manual 7 7 The thumbnail view and file name...