Despeckling an image

 

Some bilevel raster images contain noise--black or white dots speckling the image. You can clean up this noise on the active raster layer.

Effect of despeckling

image\despeck_shg.gif

To remove black or white clusters of pixels within a specified area:

· Use the IN_DespeckleEx function. Specify the active raster layer ID as objectID.

The noise is removed from the raster image.

Back to: Overview: Improving raster images