Silvio Jamil Ferzoli Guimarães, Neucimar Jeronimo Leite, Michel Couprie, Arnaldo de Albuquerque Araújo. Flat zone analysis and a sharpening operation for gradual transition detection on video images.
Eurasip Journal on Applied Signal Processing, Hindawi Publishing Corporation, 2004, 2004 (12), pp.1943-1953.
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