title: Experimental validation of phase using Nomarski microscopy with an extended Fried algorithm.
abstract: Reconstruction of an image (or shape or wavefront) from measurements of the derivatives of the image in two orthogonal directions is a common problem. We demonstrate how a particular reconstructor, commonly referred to as the Fried algorithm, can be used with megapixel derivative images to recover the original image. Large datasets are handled by breaking the derivative images into smaller tiles, applying the Fried algorithm and stitching the tiles back together. The performance of the algorithm is demonstrated using differential interference contrast microscopy on a known test object.
authors.affiliation: Oregon Insitute of Technology, Wilsonville, Oregon 97070, USA. scott.prahl@oit.edu
authors.forename: Scott A
authors.initials: SA
authors.lastname: Prahl
authors.forename: Amanda
authors.initials: A
authors.lastname: Dayton
authors.forename: Kyle
authors.initials: K
authors.lastname: Juedes
authors.forename: Erik J
authors.initials: EJ
authors.lastname: Sánchez
authors.forename: Rafael Páez
authors.initials: RP
authors.lastname: López
authors.forename: Donald D
authors.initials: DD
authors.lastname: Duncan
mesh_terms: D000465:Algorithms; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008853:Microscopy / Q000379:methods*; D055620:Optical Phenomena