User’s Manual4-60DespeckleOccasionally small dots or specks appear in the background of ascanned image. Remove unwanted speckles provides a cleanerimage for OCR (Optical Character Recognition) processing, andalso helps to reduce compressed file size.Define the speckles (also known as image noise) you wish toremove by specifying its number (size) and radius (range). Themeasuring unit is pixel. The higher the number, the morespeckles 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 Whiteimage only. To scan at rated speed, it is recommended to set thenoise radius up to 10 pixels.

Avision AD340GWN User Manual