plural of wide-awake hat

A dance from Mexico, performed by a man and a woman, in which the sombrero is placed on the ground and used in various ways.

plural of Asian conical hat

A large conical hat popular in some Asian countries, made of bamboo or straw.

slouch hat

plural of Australian bush hat

(mathematics, signal processing) Synonym of black top-hat transform

plural of bottom-hat transform

plural of top-hat transform

(mathematics, signal processing) A particular operation that extracts small elements and details from images.