Reinhold

This algorithm was developed by Kim Reinhold whilst working at the Joint Astronomy Centre in Hilo, Hawaii. Its overall strategy is first to identify pixels within the data array which mark the edges of clumps of emission. This typically produces a set of rings (in 2D), or shells (in 3D), outlining the clumps. However, these structures can be badly affected by noise in the data and so need to be cleaned up. This is done using a sequence of cellular automata which first dilate the rings or shells, and the erodes them. After cleaning, all pixels within each ring or shell are assumed to belong to a single clump.