4-12
Gray
Document Type: Normal, Photo, Document
Three options of document type are provided when you choose
Gray as the image type for your scanned document. Choice:
Normal, Photo, Document.
Document:
Choose Document if your original contains
pure text or a mixture of text and graphic since it is an
optimal setting for regular business document. When
using Document, only Threshold can be adjusted.
Photo:
Choose Photo if your original is a photo or similar
to reproduce your photo in vivid grayscale image. When
using Photo, Threshold and Contrast are locked.
Normal:
When using
Normal
, Threshold, Brightness, and
Contrast can be adjusted.
Threshold:
The value ranges from 0 to 255. The default is
230. 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.
Summary of Contents for BulletScan S300
Page 1: ...iVina Hybrid Sheetfed and Mobile Scanner User s Manual Aug 2010 ...
Page 18: ......
Page 30: ......
Page 40: ...4 10 Error Diffusion Image ...
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 86: ......
Page 90: ...7 2 3 Close the front door Scanner glass ...
Page 92: ...7 4 3 Close the scanner front door Rollers Sensor arm ...
Page 96: ...7 8 3 Remove the roller ...
Page 98: ...7 10 3 Close the rear cover by pushing two latches to its original positions ...
Page 106: ......