wedgelet

English

Etymology

• wedge +‎ -let.
• (image processing): Introduced in David L. Donoho's 1999 paper "Wedgelets: nearly minimax estimation of edges".

Noun

wedgelet (plural wedgelets)

1. A small wedge.
2. (image processing) A kind of geometrical wavelet used in image processing.
3. (astronomy) One of a set of wedge-like structures (barometric ridges) that compose a substorm current wedge.
   • 2018, Andreas Keiling, Octav Marghitu, Michael Wheatland ·, Electric Currents in Geospace and Beyond, page 332:

     If so, each wedgelet in the magnetotail should contain an asymmetric pair of FACs, as illustrated in Figure 19.9b (adapted from Liu et al. [2015]).