title: Tunable spatial filtering with a Fabry-Perot etalon.
abstract: A Fabry-Perot etalon is used in the image plane as a means of selecting arbitrary directions of propagation in the angular spectrum of an object. This provides a simple widely tunable spatial filter that could be useful in a number of image processing and pattern recognition applications.
authors.forename: G
authors.initials: G
authors.lastname: Indebetouw