Using ArcGIS 10.2 for Desktop, I am trying to create a polygon shape(s) from a raster image. Is there a way to indicate areas I do not want included in the shape. Similar to a buffer I suppose, but that will not do what I want it to do. I have the image below, top is an inset. I want the "main" areas to be within a polygon, but if a point is too far out it will be left out, this can be arbitrary depending on the location and position of other points. Is there any way to control this? I have looked at using Minimum Bounding Geometry, Convex hulls, etc. The main problem is I need to do this for over 200 files and aside from hand drawing a polygon around each shape, is there any better way to do it?