“Chambolle–Pock Read More: http://epubs.siam.org/doi/abs/10.1137/140974341?journalCode=sjisbi"

Abstract: Light rays incident on a transparent object of uniform refractive index undergo deflections, which uniquely characterize the surface geometry of the object. Associated with each point on the surface is a deflection map (or spectrum) which describes the pattern of deflections in various directions.