Patent ID: 6621605
Filing Date: 2003-09-16
Classification: G03H

Abstract:
A method of reproducing at least a real or virtual portion of a three-dimensional scene, said three-dimensional scene represented by digital data and defined in a three-dimensional geometrical space, said method comprising the following steps:calculating a set of two-dimensional images obtained by determining, in the three-dimensional geometrical space, respective intersections between the real or virtual three-dimensional scene and a plurality of section planes, calculating a hologram: for each of the two-dimensional images, and successively reproducing the holograms of the two-dimensional images on a spatial light modulator illuminated by a light source, wherein said two-dimensional images are defined by respective real functions and said step of calculating a hologram for each of the two-dimensional images comprises the following steps for a given two-dimensional image: transforming the given two-dimensional image defined by the corresponding real function into a complex two-dimensional image defined by a complex function, oversampling the complex image, simulating the production of a diffracted image resulting from the diffraction of a light wave by the oversampled complex image, adding a complex field representing a reference light wave to the resulting diffracted image, and coding values taken by the amplitude of the sum of said complex field and the resulting diffracted image to produce the hologram associated with said given two-dimensional image.