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User’s Manual
4-60
Despeckle
Occasionally small dots or specks appear in the background of
a scanned image. Remove unwanted speckles provides a
cleaner image for OCR (Optical Character Recognition)
processing, and also helps to reduce compressed file size.
Define the speckles (also known as image noise) you wish to
remove by specifying its number (size) and radius (range). The
measuring unit is pixel. The higher the number, the more
speckles will be removed.
Before Despeckle
(noise number:0, noise radius:1)
After Despeckle
(noise number:22, noise radius:10)
Note:
The function is currently available for Black and White
image only.
To scan at rated speed, it is recommended to set the
noise radius up to 10 pixels.
Содержание AD 250F
Страница 1: ...Document Scanner User s Manual Regulatory model DL 1409B Avision Inc...
Страница 24: ...User s Manual 3 6 5 Verify that the paper guides are aligned with the edges of the stack...
Страница 26: ...User s Manual 3 8 Slide UP the Paper Width switch to set your paper width larger than 216 mm 8 5 in...
Страница 39: ...User s Manual 4 5...
Страница 48: ...User s Manual 4 14 Error Diffusion Image Dynamic Threshold Dynamic Threshold AD...
Страница 51: ...User s Manual 4 17 Normal Photo Document Threshold 230 Normal Photo Document Threshold 230...
Страница 64: ...User s Manual 4 30 The Compression tab dialog box...
Страница 68: ...User s Manual 4 34 The Color Dropout dialog box...
Страница 124: ...User s Manual 7 4 5 Press and wipe the rollers one by one Rotate the roller until the surfaces are completely cleaned...
Страница 128: ...User s Manual 7 8 3 Close the reverse roller Cover 4 Close the ADF cover...