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.Material digitalizado en SEDICI-CIC Digital gracias a la Centro de Investigaciones Opticas (CIOP), UNLP-CICCentro de Investigaciones ÓpticasFacultad de IngenieríaFacultad de Ciencias Exacta
