Consiglio Nazionale Delle Ricerche

Giovanni Pierattini

Pietro Ferraro

Andrea Finizio

Simonetta Grilli

Giuseppe Coppola

Sergio De Nicola

Bahram Javidi

A holographic method with numerical reconstruction for obtaining an image of a three-dimensional object, employs a digitalized hologram of an object or of a portion thereof, and includes starting from the digitalized hologram, extracting a phase image of the object corresponding to a matrix MD of distance values, selecting a subassembly SD of the distance value assembly present in matrix MD, subassembly SD containing distance values d, extracting from matrix MD an iso-level assembly IQdof corresponding bidimensional coordinate of the object; reconstructing, for each distance value d, a bidimensional matrix IMdof intensity values relevant to the object; extracting, from each bidimensional matrix IMd, a bidimensional IFdof intensity values; and starting from the intensity values, reconstructing the three-dimensional intensity image of the object.

Holographic method with numerical reconstruction for obtaining an image of a three-dimensional object in which even points out of the depth of field are in focus, and holographic apparatus using such a method

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Arco Felice, Italy

Giovanni Pierattini