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A Fast Hologram Calculation Method Based on Hologram Optimal Segmentation Computation

A calculation method and hologram technology, applied in the field of holographic display, can solve the problems that hinder the development of holographic 3D display, the calculation speed of holographic 3D display is slow, and it is difficult to meet the viewing needs of video display.

Active Publication Date: 2021-03-09
BEIHANG UNIV
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Problems solved by technology

However, the current calculation speed of holographic 3D display is very slow, which is difficult to meet the viewing needs of video display, which hinders the development of holographic 3D display

Method used

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  • A Fast Hologram Calculation Method Based on Hologram Optimal Segmentation Computation
  • A Fast Hologram Calculation Method Based on Hologram Optimal Segmentation Computation
  • A Fast Hologram Calculation Method Based on Hologram Optimal Segmentation Computation

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Embodiment Construction

[0023] An embodiment of a fast hologram calculation method based on hologram optimal segmentation calculation proposed by the present invention will be described in detail below to further describe the present invention. It is necessary to point out that the following examples are only used for further description of the present invention, and cannot be interpreted as limiting the protection scope of the present invention. Those skilled in the art make some non-essential improvements and improvements to the present invention according to the above-mentioned content of the invention. Adjustment still belongs to the protection scope of the present invention.

[0024] An embodiment of the present invention is: in the experiment, a green laser is used as a light source with a wavelength of 532nm. The resolution of the spatial light modulator is 1920×1080, the pixel pitch is 6.4μm, and the refresh rate is 60HZ. Set the diffraction distance of the 3D object as 10cm, and the distanc...

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Abstract

The invention proposes a fast hologram calculation method based on hologram optimal segmentation calculation. The method includes the following steps: For a 3D object, firstly, the 3D object is divided into 2D surfaces with different depths, and the diffraction distance of each 2D surface is calculated according to the depth of the 2D surfaces. Secondly, the initial interferogram of all object points on the 2D surface is calculated based on the principle of near-field diffraction, and the hologram on the 2D surface is optimally segmented and calculated according to the viewing position, the size of the 2D surface and the diffraction distance of the 2D surface, so as to realize the fast calculation of the hologram. Finally, the holograms of 2D surfaces with different depths are optimally segmented and calculated, and all the calculated 2D surface holograms are superimposed together to generate a hologram of a 3D object. The hologram of the 3D object is loaded onto the spatial light modulator, and when the light source illuminates the spatial light modulator, the reconstructed image of the 3D object can be seen.

Description

[0001] 1. Technical field [0002] The present invention relates to holographic display technology, more specifically, the present invention relates to a fast hologram calculation method based on hologram optimal segmentation calculation. [0003] 2. Background technology [0004] Holography can completely record and reconstruct the wavefront of 3D objects. Holographic 3D display can provide all the depth information required by human vision, and there is no problem of stereoscopic viewing fatigue caused by set adjustment conflicts. Therefore, it is widely used in medical diagnosis, education and training. And advertising media and other fields have a wide range of applications. However, the current calculation speed of holographic 3D display is very slow, which is difficult to meet the viewing needs of video display, which hinders the development of holographic 3D display. In order to improve the calculation speed of holographic 3D display, the researchers proposed to use a n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03H1/08G03H1/12
CPCG03H1/0866G03H1/12G03H2001/0825
Inventor 王迪王琼华李移隆李楠楠刘超
Owner BEIHANG UNIV
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