Glossary for Geospatial Science

thresholding:  Setting a data conversion separation limit such that any incoming value above the designated limit, or threshold, is assigned one value (in binary thresholding, a “1”) and any incoming value below or equal to the limit is assigned another value (in binary thresholding, a “0”).  Thresholding can be used to generate a binary raster from a 16-gray-level scan, or to find feature edges during the steps of raster to vector conversion.