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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.
Summary of Contents for AD6090
Page 1: ...Prodution Scanner User s Manual Regulatory model FT 1906H Avision Inc...
Page 12: ...User s Manual 1 5 1 4 Removable Parts ADF Roller Reverse Roller Pick up Roller...
Page 27: ...User s Manual 3 3 Document Feeding 1 Unfold the document feeder...
Page 42: ...User s Manual 4 5...
Page 51: ...User s Manual 4 14 Error Diffusion Image Dynamic Threshold Dynamic Threshold AD...
Page 54: ...User s Manual 4 17 Normal Photo Document Threshold 230 Normal Photo Document Threshold 230...
Page 67: ...User s Manual 4 30 The Compression tab dialog box...
Page 71: ...User s Manual 4 34 The Color Dropout dialog box...
Page 136: ...User s Manual 7 13...
Page 138: ...User s Manual 7 15 3 Align the tab position and lift the tab UP as shown...
Page 139: ...User s Manual 7 16 4 Close the ADF Roller Cover...
Page 141: ...User s Manual 7 18...