title: Optical correlation based on the fractional Fourier transform.
abstract: Some properties of optical correlation based on the fractional Fourier transform are analyzed. For a particular set of fractional orders, a filter is obtained that becomes insensitive to scale variations of the object. An optical configuration is also proposed to carry out the fractional correlation in a flexible way, and some experimental results are shown.
authors.forename: S
authors.initials: S
authors.lastname: Granieri
authors.forename: R
authors.initials: R
authors.lastname: Arizaga
authors.forename: E E
authors.initials: EE
authors.lastname: Sicre