6. Glossary

Mosaic

A mosaic is composed of multiple input data.

Medoid

A medoid is representative object of a data set or a cluster with a data set whose average dissimilarity to all the objects in the cluster is minimal. A medoid is similar in concept to mean or centroid, but medoid is always restricted to be members of the data set.

STC

Short Term Composite methodology. A compositing methodology inspired by the WELD algorithm. It is used for shorter periods with less input data.

WELD

Web Enabled Landsat Data. The WELD project generates global composited and mosaicked True color Landsat 7 Enhanced Thematic Mapper Plus (ETM+) 30 meter resolution imagery in monthly and annual time increments. Details on the algorithm can be found here.