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User’s Manual
85
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 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 ...