User’s Manual
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
4-11
Summary of Contents for DF-1004S
Page 1: ...Color Image Scanner User s Manual Regulatory model DF 1015S DF 1004S Avision Inc ...
Page 32: ...Error Diffusion Image 4 10 ...
Page 35: ...User s Manual Normal Photo Document Threshold 230 Normal Photo Document Threshold 230 4 13 ...
Page 46: ...The Compression tab dialog box 4 24 ...
Page 48: ...The Color Dropout dialog box 4 26 ...
Page 50: ...Remove Blue Threshold 20 Background 255 Remove Blue Threshold 20 Background Level 210 4 28 ...
Page 64: ...Detection Area Outside the Range Box Top 3 Bottom 7 4 42 ...
Page 115: ...User s Manual ADF Roller ADF Pad ADF Release Button 9 3 ...
Page 116: ...9 4 ...
Page 119: ...User s Manual 3 Hold the roller and slightly move it forward to detach the roller 9 7 ...