To Remove Speckles From an Image

  1. Click Raster menu CleanupDespeckle.
  2. Select the image or images you want to remove speckles from, and then press Enter.

    The following prompt appears:

    Specify first corner point of window or [entire Image/Clip region/Polygon/Existing] <entire Image>:

  3. To define the region to despeckle, do one of the following:
    • Press Enter to despeckle the entire image(s).
    • In the drawing, define a rectangular sub-region.
    • Enter c to use an existing image clip.
    • Enter p, then enter several points to define a polygonal sub-region.
    • Enter e, then click an existing closed vector entity to define the region.

    The following prompt appears:

    Pick a speckle to set size or [Window/size in piXels/size in Units] <Window>:

  4. To define the maximum size of speckle to delete, do one of the following:
    • In the drawing, click a speckle.
    • Enter w and then draw a window that defines the maximum speckle size.
    • Enter x and then enter a numeric speckle size in AutoCAD units.
    • Enter u and then enter a numeric speckle size in pixels.
    Tip: When determining the best size to use, note that a size too large can remove parts of text, such as periods or dots.

    The speckles to be deleted are highlighted, and the following prompt appears:

    Press enter to proceed, pick a speckle to deselect or specify deselection option [Window/Polygon/Respecify size]:

  5. Review the highlighted speckles to determine if you want them all deleted, then do one of the following:
    • Press Enter to delete the speckles.
    • Click any speckles that you want to keep.
    • Enter w and then draw a window around any group or groups of speckles that you want to keep.
    • Enter p and then draw a polygon around a group of speckles that you want to keep.
    • Enter r and then repeat step 4 to respecify the speckle size and see a different set of speckles highlighted for deletion.