@TechReport{felsbergTR2009, author = {M. Felsberg and G. Sommer}, title = {The Monogenic Signal}, institution = {Christian-Albrechts-Universit{"a}t zu Kiel, Institut f{"u}r Informatik und Praktische Mathematik}, type = {Technical Report}, number = {Number 2009}, month = {September}, year = 2000}