Generation of a hologram pattern
a hologram and pattern technology, applied in the field of generating hologram patterns, can solve the problems of interfering light generation in which the object and reference beam interfere with each other, optical manufacturing a hologram for reconstructing a moving image requires enormous cost and time, and the known method of electronically generating a hologram also requires enormous computation tim
Inactive Publication Date: 2010-02-25
INT BUSINESS MASCH CORP
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Problems solved by technology
Thus, interfering light in which the object and reference beams interfere with each other is generated.
In particular, optically manufacturing a hologram for reconstructing a moving image requires enormous cost and time.
Moreover, a known method of electronically generating a hologram also requires enormous computation time.
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[0026]The present invention provides generation devices, methods and apparatus for generating a hologram pattern for displaying a 3D object based on the 3D object to be displayed. An example of a generation device includes: selecting means for selecting, as a cross section range in each cross section of a plurality of cross sections into which the 3D object is divided and which are parallel to the hologram pattern, the cross section range to be used for generating the hologram pattern, a cross section range overlapping cross section ranges in other cross sections in a case where the relevant cross section is perspectively seen from a previously determined observation point on the hologram pattern; depth integrating means for calculating, for each of a plurality of lattice points in a coordinate system provided in one cross section range, a depth integral function acquired by integrating an inverse diffraction function for determining a hologram pattern for displaying points of the 3...
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Device for generating a hologram pattern including selecting means for selecting, as cross section ranges which are in a plurality of cross sections parallel to hologram pattern in 3D object and which are ranges used for generating hologram pattern, cross section ranges which overlap ranges in other cross sections when the relevant cross section is perspectively seen from a predetermined observation point on the hologram pattern; depth integrating means for calculating, for lattice points in one cross section range, a depth integral function acquired by integrating an inverse diffraction function for determining hologram pattern for displaying points of 3D object with respect to respective lattice points in the cross section ranges which overlap the relevant lattice point; and inverse Fourier transform means for generating hologram pattern by performing two-dimensional inverse transform on depth integral functions with respect to plurality of lattice points in one cross section range.
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]This is a divisional application from U.S. patent application Ser. No. 10 / 910,670 filed Aug. 3, 2004.FIELD OF THE INVENTION[0002]The present invention relates to a generation device, a generation method, a program, and a recording medium for generating a hologram pattern. It also relates to generating a hologram pattern using a computer, wherein the hologram pattern displays a 3D object based on the 3D object to be displayed.BACKGROUND OF THE INVENTION[0003]Heretofore, holography technology capable of causing an observer to perceive a three-dimensional object has been used. Since holography technology does not require a special device and the like and can cause an observer to intuitively and correctly perceive a 3D object without imposing a strain on the eye of the observer, holography technology has a wide range of applications. For example, holography technology is used in the fields of exhibition, advertisement, medical care, education...
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IPC IPC(8): G03H1/08G03H1/16G03H1/22
CPCG03H1/2294G03H2001/2297G03H2210/454G03H2210/36G03H2210/30G03H1/0808G03H2226/04
Inventor NAKAMURA, FUSASHI
Owner INT BUSINESS MASCH CORP