A simple method of generating pseudo Fizeau fringes on large objects with deformations of the order of a few centimeters is described and demonstrated. A stereo pair of photographs of the object are placed one in each arm of a Mach-Zehnder interferometer and are then imaged onto a common image plane. A knife edge placed in the back focal plane of the imaging lens deforms the straight line fringes of the Mach-Zehnder interferometer to provide relief information of the object. The functional form of the deformed fringes is shown to be equivalent to Fizeau fringes.
V. P. Bennett,
"Generation Of Pseudo Fizeau Fringes On Large Objects Using Stereo Pairs," Optical Engineering 13(3), 133279 (1 June 1974). https://doi.org/10.1117/12.7971706