User’s Manual
4-62
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 AV332IL
Page 1: ...Sheet fed Scanner User s Manual Regulatory model FF 1904B Avision Inc ...
Page 13: ...User s Manual 1 5 1 4 Removable Parts ADF Roller Friction Roller ...
Page 34: ...User s Manual 4 5 ...
Page 43: ...User s Manual 4 15 Error Diffusion Image Dynamic Threshold Dynamic Threshold AD ...
Page 46: ...User s Manual 4 18 Normal Photo Document Threshold 230 Normal Photo Document Threshold 230 ...
Page 59: ...User s Manual 4 32 The Compression tab dialog box ...
Page 63: ...User s Manual 4 36 The Color Dropout dialog box ...
Page 117: ...User s Manual 7 2 ...