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Phase modulation full-parallax holographic stereogram implementation method

A technology of phase modulation and realization method, applied in the direction of instruments, etc., can solve the problems of lack of prototype and engineering application, reduced image reproduction quality, spatial bandwidth utilization rate of spatial light modulator, etc., to achieve accurate grayscale modulation characteristics and reduce conjugate images. interference, the effect of improving reproduction quality

Inactive Publication Date: 2014-07-30
ACADEMY OF ARMORED FORCES ENG PLA
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Problems solved by technology

In addition, the current holographic volumetric view technology uses amplitude modulation. During the reproduction process, the existence of the conjugate image seriously reduces the reproduction quality of the image and the utilization of the spatial bandwidth of the spatial light modulator.
In China, research on holographic stereoscopic views is still in its infancy, and there are no mature prototypes and engineering applications

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  • Phase modulation full-parallax holographic stereogram implementation method
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Embodiment Construction

[0023] The "a method for realizing phase modulation full parallax holographic volume view" of the present invention will be further described below in conjunction with the accompanying drawings and examples.

[0024] figure 1 The first embodiment of the method for realizing the holographic volume view provided by the present invention includes a target object (1), a CCD camera (2), a computer (3), a holographic unit (4), a holographic volume view (5), and a laser light source (6), collimation system (7), spatial light modulator (8).

[0025] In this embodiment, the target object (1) is a three-dimensional human figure. The CCD camera (2) is arranged on a plane parallel to the plane of view of the hologram (5). The multi-angle parallax image ( 9). The holographic volume view (5) is spatially divided into multiple two-dimensional functional diffraction holographic units (4), and each holographic unit (4) is a phase-modulated digital hologram, which has the ability to diffrac...

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Abstract

The invention belongs to the technical field of computer-generated holography and three-dimensional display, and particularly relates to a phase modulation full-parallax holographic stereogram implementation method. A target object, a CCD camera, a computer, holographic units, a holographic stereogram, a laser light source, a collimation system and a space optical modulator are included. A multi-angle anaglyph of the target object is obtained according to the method of the CCD camera or the computer graphics, and the frequency spectrums of the holographic units are extracted through the Fourier transform relation between the holographic units and a reappearance plane. The calibrated holographic unit frequency spectrum serves as a reappearance target image, all phase modulation holographic units are obtained through the iteration Fourier algorithm, and the holographic stereogram is generated. The holographic stereogram is loaded to the space optical modulator, and full-parallax multi-view reappearance of the target object is achieved by irradiating the holographic stereogram through the laser light source. By means of the holographic stereogram implementation method, multi-view reappearance of the three-dimensional object can be achieved, interference caused by conjugate images in an existing holographic stereogram is eliminated, the bandwidth of the space light modulator is fully used, the diffraction efficiency of the holographic stereogram is effectively improved, and the full-parallax holographic stereogram is displayed through the phase modulation space optical modulator.

Description

technical field [0001] The invention belongs to the field of computational holography and three-dimensional display, in particular to a method for realizing phase modulation full parallax holographic volume view. Background technique [0002] With the rapid development of laser technology and computational holographic technology, three-dimensional holographic display has penetrated into various fields of social life. Because it can realistically reproduce the shape and depth characteristics of 3D objects, 3D holographic display technology has broad application prospects in the fields of topography and landform measurement, surface contour reconstruction, 3D object imaging, 3D target recognition, and medical diagnosis. However, the huge amount of data, slow calculation speed and high requirements for the space-bandwidth product are currently the bottleneck problems that plague the practical application of computational holographic display technology. [0003] Holographic ste...

Claims

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Application Information

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IPC IPC(8): G03H1/12G03H1/22
Inventor 闫兴鹏裴闯蒋晓瑜刘中晅赵锴
Owner ACADEMY OF ARMORED FORCES ENG PLA
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