1 March 2013 Realistic 3D image reconstruction in CGH with Fourier transform optical system
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In CGH, peculiar rendering techniques are necessary to express realistic 3D images because CGHs have parallax. We have proposed the calculation method with the ray tracing method that expresses the hidden surface removal, shading and so on. However, resolutions of current output devices are not high enough to display CGH, so the size of reconstructed images is restricted and viewing zone and visual field are very narrow. To enlarge the size of reconstructed images, the Fourier transform optical system is used. Then we introduce the technique to apply calculation method of CGH with ray tracing method to the Fourier transform optical system in this paper. The Fourier transform optical system reverses the depth of images and reconstructs pseudo stereoscopic 3D images in front of a hologram. We solved this problem by reconstructing images at the back of hologram plane and observing conjugate images. Moreover, we conducted elimination of unnecessary light including 0-th order light. We conducted optical reconstructions that show proposed method is able to make realistic CGHs implementing the hidden surface removal in the Fourier transform optical system.
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Tsubasa Ichikawa, Tsubasa Ichikawa, Kazuhiro Yamaguchi, Kazuhiro Yamaguchi, Yuji Sakamoto, Yuji Sakamoto, } "Realistic 3D image reconstruction in CGH with Fourier transform optical system", Proc. SPIE 8644, Practical Holography XXVII: Materials and Applications, 86440D (1 March 2013); doi: 10.1117/12.2003371; https://doi.org/10.1117/12.2003371

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