title: Determination of the zero-order fringe position in digital speckle pattern interferometry.
abstract: A method for determining the position of the zero-order fringe in a metrological experiment with digital speckle pattern interferometry is proposed. It is based on an averaging procedure with shifted images obtained before and after a load is applied. This technique is a complement to the phase-shifting methods. Experimental examples are shown.
authors.forename: R
authors.initials: R
authors.lastname: Henao
authors.forename: H
authors.initials: H
authors.lastname: Rabal
authors.forename: A
authors.initials: A
authors.lastname: Tagliaferri
authors.forename: R
authors.initials: R
authors.lastname: Torroba