Technical Report Number
Discrete-time fractional derivative filters (1-D and 2-D) are shown to be well approximated from a small set of integer derivatives. A fractional derivative of arbitrary order (and, in 2-D, of arbitrary orientation) can therefore be efficiently computed from a linear combination of integer derivatives of the underlying signal or image.
Dartmouth Digital Commons Citation
Farid, Hany, "Discrete-Time Fractional Differentiation from Integer Derivatives" (2004). Computer Science Technical Report TR2004-528. https://digitalcommons.dartmouth.edu/cs_tr/261