METHOD FOR PROCESSING A SEQUENCE OF HOLOGRAPHIC IMAGES, DEVICES, SIGNALS, DEVICES AND COMPUTER PROGRAM ASSOCIATED THEREWITH

摘要

A method for processing a sequence of holographic images, with a view to its rendition by a holographic display device to at least one observer. A holographic image is decomposed over a Gabor wavelet basis into a set of wavelet coefficients. The method includes the following acts, implemented for an image of the sequence: obtaining items of information representative of the decomposition over the Gabor wavelet basis; obtaining of items of information representative of a location of the at least one observer in a reference frame of the display device; selecting a subset of wavelet coefficients as a function of the wavelet items of information and of the location items of information obtained.

主权项

1. A method for processing a sequence of holographic images, with a view to its rendition by a holographic display device to at least one observer, wherein, for a holographic image decomposed over a Gabor wavelet basis into a set of wavelet coefficients, the method comprises the following acts performed by a processing device:
obtaining items of information representative of the decomposition over the Gabor wavelet basis; obtaining items of information representative of a location of said at least one observer in a reference frame of the display device; the items of information representative of a location of said at least one observer comprising parameters characteristic of a connected and convex subset of positions of the observer, termed an encompassing volume; and selecting a subset of wavelet coefficients as a function of the wavelet items of information and of the location items of information obtained, said selecting comprising the following sub-acts:
determining an angular direction of emission and of an angular dispersion of a light cone produced by a Gabor wavelet at a point of the holographic image in a reference frame of the display device;identifying the cones having a non-zero intersection with at least the encompassing volume of said at least one observer; andselecting wavelets corresponding to the identified cones.