Fast calculation of spherical computer generated hologram using spherical wave spectrum method

Abstract

A fast calculation method for computer generation of spherical holograms in proposed. This method is based on wave propagation defined in spectral domain and in spherical coordinates. The spherical wave spectrum and transfer function were derived from boundary value solutions to the scalar wave equation. It is a spectral propagation formula analogous to angular spectrum formula in cartesian coordinates. A numerical method to evaluate the derived formula is suggested, which uses only N(logN)2 operations for calculations on N sampling points. Simulation results are presented to verify the correctness of the proposed method. A spherical hologram for a spherical object was generated and reconstructed successfully using the proposed method.

Wireless Holographic Image Communications Relying on Unequal Error Protected Bitplanes

“…Alternatively, about 12.5 dB of PSNR hologram quality improvement is observed at an E b /N 0 of 7 dB. Furthermore, the PSNR versus E b /N 0 performance of the Opt-UEP-RSC Opt-UEP-RSC-u 4 Opt-UEP-RSC-u 5 Opt-UEP-RSC-u 6 Opt-UEP-RSC-u 7 Figure 7: BER, PSNR, Code rate versus E b /N 0 performance comparison of the proposed system and the benchmarkers, namely the EEP-RSC scheme, the Opt-UEP-RSC scheme and the Opt-UEP-RSC-Est scheme for the Holo and Coil holograms. using the Coil hologram is portrayed in Fig.…”

“…Holography 1 [1], including optical holography, computer generated holography (CGH) and digital holography (DH) are being actively researched at the time of writing [2]- [6]. In [4], CGHs were generated using a small number of multiview images captured by appropriately arranged cameras.…”

“…In [4], CGHs were generated using a small number of multiview images captured by appropriately arranged cameras. An efficient generation of the CGH was proposed in [6]. The European Real 3D research project [2], [7] aimed for capturing both 3D and 4D real-world objects as well as for the processing and display of digital holography.…”

“…5. The objective 6 The Mathematica tool was employed in the simulations, while more solutions may be found in [43]- [45]. …”

Color holographic display method based on a single-spatial light modulator

“…Holographic display is an ideal three-dimensional display technology, [1][2][3][4] and it records and reproduces all light field information, which includes the amplitude and phase in the form of a fringe pattern generated by interferencing 5,6 with a reference beam. There are two methods to achieve color holographic display: [7][8][9] one is using three spatial light modulators (SLMs) 10,11 to reconstruct the image.…”