title: Resolution enhancement in integral microscopy by physical interpolation.
abstract: Integral-imaging technology has demonstrated its capability for computing depth images from the microimages recorded after a single shot. This capability has been shown in macroscopic imaging and also in microscopy. Despite the possibility of refocusing different planes from one snap-shot is crucial for the study of some biological processes, the main drawback in integral imaging is the substantial reduction of the spatial resolution. In this contribution we report a technique, which permits to increase the two-dimensional spatial resolution of the computed depth images in integral microscopy by a factor of √2. This is made by a double-shot approach, carried out by means of a rotating glass plate, which shifts the microimages in the sensor plane. We experimentally validate the resolution enhancement as well as we show the benefit of applying the technique to biological specimens.
authors: 3D Imaging and Display Laboratory, Department of Optics, University of Valencia, E-46100 Burjassot, Spain.
authors: Anabel
authors: A
authors: Llavador
authors: 3D Imaging and Display Laboratory, Department of Optics, University of Valencia, E-46100 Burjassot, Spain.
authors: Emilio
authors: E
authors: Sánchez-Ortiga
authors: 3D Imaging and Display Laboratory, Department of Optics, University of Valencia, E-46100 Burjassot, Spain.
authors: Juan Carlos
authors: JC
authors: Barreiro
authors: 3D Imaging and Display Laboratory, Department of Optics, University of Valencia, E-46100 Burjassot, Spain.
authors: Genaro
authors: G
authors: Saavedra
authors: 3D Imaging and Display Laboratory, Department of Optics, University of Valencia, E-46100 Burjassot, Spain.
authors: Manuel
authors: M
authors: Martínez-Corral
keywords: (100.6890) Three-dimensional image processing; (110.6880) Three-dimensional image acquisition; (120.2040) Displays; (180.6900) Three-dimensional microscopy