Computer generated holograms of 3D objects with reduced number of projections

Su-juan Huang; Dao-jin Liu; Jing-jing Zhao

doi:10.1117/12.870542

17 November 2010 Computer generated holograms of 3D objects with reduced number of projections

Su-juan Huang, Dao-jin Liu, Jing-jing Zhao

Proceedings Volume 7848, Holography, Diffractive Optics, and Applications IV; 784831 (2010) https://doi.org/10.1117/12.870542
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

A new method for synthesizing computer-generated holograms of 3D objects has been proposed with reduced number of projections. According to the principles of paraboloid of revolution in 3D Fourier space, spectra information of 3D objects is gathered from projection images. We record a series of real projection images of 3D objects under incoherent white-light illumination by circular scanning method, and synthesize interpolated projection images by motion estimation and compensation between adjacent real projection images, then extract the spectra information of the 3D objects from all projection images in circle form. Because of quantization error, information extraction in two circles form is better than in single circle. Finally hologram is encoded based on computer-generated holography using a conjugate-symmetric extension. Our method significantly reduces the number of required real projections without increasing much of the computing time of the hologram and degrading the reconstructed image. Numerical reconstruction of the hologram shows good results.

Citation Download Citation

Su-juan Huang, Dao-jin Liu, and Jing-jing Zhao "Computer generated holograms of 3D objects with reduced number of projections", Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 784831 (17 November 2010); https://doi.org/10.1117/12.870542

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