4-9
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:80,
Brightness: 0
200 dpi,
Threshold:170,
Brightness: 0
Summary of Contents for DF-0510
Page 1: ...Color Image Scanner User s Manual Regulatory model DF 0510 Avision Inc ...
Page 44: ...4 20 The Compression tab dialog box ...
Page 47: ...4 23 Remove Blue Threshold 20 Background 255 Remove Blue Threshold 20 Background Level 210 ...
Page 54: ...4 30 Example Additional Length Detection Set Additional Length to be 2 02 inches 2 02 ...