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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >An analysis of the influence of the color rendition of images reconstructed from full-color computer-generated Fourier-transform holograms
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An analysis of the influence of the color rendition of images reconstructed from full-color computer-generated Fourier-transform holograms

机译：从全彩色计算机生成的傅里叶变换全息图重建的图像的色彩再现的影响分析

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摘要

The color rendition of an image reconstructed from a color computer-generated Fourier hologram (CCGFH) is both a basic and an important issue in the field of holography. In this study, CCGFHs are encoded with the Burch encoding algorithm and then loaded onto a spatial light modulator for optical reconstruction. The influence of the color rendition of the reconstructed images has been analyzed primarily through experiments. The experimental results show that the individual element size used in encoding the CCGFH is inversely proportional to both the size and the central location of the reconstructed images, whereas the wavelength of the monochromatic light used in optical reconstruction is proportional. Some parameters related to the spectrum, such as different transmittances, half-widths of the three primary color filters and different sensitivity levels to the three primary colors of the complementary metal–oxide–semiconductor (CMOS), affect the color rendition of the reconstructed image. A method for correcting color aberration in reconstructed images is proposed. Using this method, the influence of the wavelength can be corrected by stretching the reconstructed image to an appropriate size and the influence of the spectrum can be corrected by equalizing the spectral sensitivity levels of the CMOS. The color rendition of the reconstruction is improved significantly using the method. The proof-of-principle experiments demonstrate that the method is effective and feasible.
机译：从彩色计算机生成的傅立叶全息图（CCGFH）重建的图像的颜色再现是全息领域中的基本问题和重要问题。在这项研究中，使用Burch编码算法对CCGFH进行编码，然后将其加载到空间光调制器上以进行光学重建。主要通过实验分析了重建图像色彩再现的影响。实验结果表明，用于编码CCGFH的单个元素大小与重建图​​像的大小和中心位置成反比，而用于光学重建的单色光的波长则成正比。与光谱有关的一些参数，例如不同的透射率，三个原色滤光片的半宽以及对互补金属氧化物半导体（CMOS）的三个原色的敏感度不同，都会影响重建图像的颜色再现。 。提出了一种校正重建图像色差的方法。使用这种方法，可以通过将重构图像拉伸到适当的大小来校正波长的影响，并且可以通过均衡CMOS的光谱灵敏度水平来校正光谱的影响。使用该方法可以显着改善重建的色彩再现。原理验证实验表明该方法是有效可行的。

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