In the last decade the processing of polygonal meshes has emerged as an active and very productive research area. This can basically be attributed to two developments:  Modern geometry acquisition devices, like laser scanners and MRT, easily

—This paper shows a proposal for Type-reduction of an Interval Type-2 fuzzy set composed from α -cuts done over its primary membership functions. The defi nition of available Type-reduction methods for Interval Type-2 fuzzy sets are based