Glossary for Geospatial Science

bubble:� A small island (often just a cell or two) of background color in the stream of a thinned, binary line in a raster.� Bubbles are artifacts of the thinning process and result from binary lines that include unnoticed cells of the background color after thresholding.� Bubbles must be repaired by raster editing or else the automatic vectorization process will create small, incorrect polygon elements from them.