As digital holography achieves numerical reconstruction of the complex wavefront diffracted by specimen, a numerical optics formalism has been developed: numerical filters replace pinholes in Fourier planes, numerical lenses allow aberrations compensation and image magnification.
Aleksandra Radenovic, Vytautas Navikas, Sanjin Marion, Adrien Charles-François Raymond Descloux, Kristin Stefanie Grussmayer