4-11
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 BF-1008S
Page 1: ...Intelligent Flatbed Scanner User s Manual Regulatory model BF 1008S Avision Inc ...
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Page 40: ...4 10 Error Diffusion Image ...
Page 43: ...4 13 Normal Photo Document Threshold 230 Normal Photo Document Threshold 230 ...
Page 54: ...4 24 The Compression tab dialog box ...
Page 56: ...4 26 The Color Dropout dialog box ...
Page 58: ...4 28 Remove Blue Threshold 20 Background 255 Remove Blue Threshold 20 Background Level 210 ...
Page 72: ...4 42 Detection Area Outside the Range Box Top 3 Bottom 7 ...
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