Spatial conversion method of three-dimensional holographic colors

A technology of color space conversion and space conversion, which is applied in the direction of instruments, etc., can solve the problems that have not been well solved, the obstacles to the application of color synthesis holography, and the inability to reproduce color information well, so as to achieve the goal of expanding chroma and saturation Effect

Inactive Publication Date: 2014-11-26
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] The research and development of color synthesis holographic recording and display system, from rainbow holography to full parallax synthetic holography, whether it is using single or multiple lasers, synthetic optical holography or computational holography, the color of the reproduced image is always unable to faithfully restore the original color of the object appearance, and this problem has not been well resolved, this difference has become an obstacle to the application of color synthesis holography in industrial design, entertainment vision and other fields
[0005] In short, the existing technology cannot reproduce color information very well

Method used

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  • Spatial conversion method of three-dimensional holographic colors
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  • Spatial conversion method of three-dimensional holographic colors

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0026] A spatial transformation method of a three-dimensional holographic color of the present invention comprises the following two steps:

[0027] S1, RGB; the color space is converted to the XYZ color space;

[0028] Specifically, three lasers are used to emit red, green, and blue laser beams with corresponding wavelengths;

[0029] The holographic reproduction color is defined according to the principle of RGB additive color mixing:

[0030] h e (λ)=R'f r (λ)+G'f g (λ)+B'f b (λ)+f b g(λ) (1)

[0031] h e (λ), f r (λ), f g (λ), f b (λ) and f bg (λ) respectively represent the maximum value of the spectral radiation intensity of the primary color, and the spectral radiation intensity of the back...

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Abstract

The invention discloses a spatial conversion method of three-dimensional holographic colors, and the method includes the steps of: S1. converting an RGB color space to an XYZ color space; specifically, using three lasers to emit laser beams which are red, green, and blue respectively and have corresponding wavelengths; determining coordinates of the XYZ color space obtained by conversion; and determining chromaticity diagram coordinates of three-primary colors emitted by the three lasers and white balance; S2. converting the XYZ color space to the RGB color space; specifically, obtaining the chromaticity diagram coordinates of three-primary colors emitted by the three lasers and white balance according to the step S1, and acquiring a conversion matrix of conversion to the RGB color space from the XYZ color space; and S3. according to the conversion matrix obtained by the step S2, restoring color information. The spatial conversion method of three-dimensional holographic colors in the invention greatly reduces influence of background light on chromatic aberration, conversion of color spaces are no longer limited in a standard RGB space, color information of an original object can be truly reproduced, and at the same time, laser can serve as primary colors of the background light, chroma and saturation of colors reproduced in the RGB space by equipment are enlarged.

Description

technical field [0001] The present invention relates to the technical field of color synthesis, and more specifically relates to a space conversion method of three-dimensional holographic color. Background technique [0002] The research and development of color synthetic holographic recording and display system, from rainbow holographic to full parallax synthetic holographic, whether using single or multiple lasers, synthetic optical holographic or computational holographic, the color of the reproduced image can never faithfully restore the original color of the object However, this problem has not been well resolved, and this difference has become an obstacle to the application of color synthesis holography in industrial design, entertainment vision and other fields. [0003] In color holography, the research group of Northeast College of Wales, University of Wales used multiple wavelength lasers to record the information of holographic objects. Compared with the holograph...

Claims

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Application Information

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IPC IPC(8): G03H1/08
Inventor 杨菲刘娟王涌天
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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