METHOD FOR CONTROLLING DEPTH-OF-FOCUS IN 3D IMAGE RECONSTRUCTIONS, IN PARTICULAR FOR SYNTHESIZING THREE-DIMENSIONAL DYNAMIC SCENE FOR THREE- DIMENSIONAL HOLOGRAPHY DISPLAY, AND HOLOGRAPHIC APPARATUS UTILIZING SUCH A METHOD

摘要

The invention concerns a method for controlling depth or depth-of-focus in 3D image reconstructions, in particular for: A) Controlling the depth with the aim to synthesize a holography dynamic 3D scene; such a scene can be either numerically reconstructed or holographically projected for 3D display purposes by means of optical reconstruction through Spatial Light Modulator (SLM); B) controlling the focus to extend the depth of focus and have two object at different distance simultaneously in focus by digital holography; The method according to the invention can be applied with few differences both to the usual holograms and to the Fourier ones. The invention further concerns a holographic apparatus implementing the method according to the invention.