You can despeckle an image to remove small spots that were created in the scanning process. To start the process, specify the largest size of speckle to delete. AutoCAD Raster Design toolset then deletes all speckles of that size or smaller. Before you despeckle an image, you should examine it to identify any small points that must not be deleted. Then you can specify a speckle size that is smaller than the marked points to be retained in the drawing.