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User’s Manual
41
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 FL-1507B
Page 1: ...Sheet fed Scanner User s Manual Regulatory model FL 1507B Avision Inc ...
Page 40: ...User s Manual 31 ...
Page 49: ...User s Manual 40 Error Diffusion Image Dynamic Threshold Dynamic Threshold AD ...
Page 52: ...User s Manual 43 Normal Photo Document Threshold 230 Normal Photo Document Threshold 230 ...
Page 64: ...User s Manual 55 The Compression tab dialog box ...
Page 68: ...User s Manual 59 The Color Dropout dialog box ...