Computer-generated holograms using multiview images captured by a small number of sparsely arranged cameras

Abstract

Computer-generated holograms (CGHs) using multiview images (MVIs) are holograms generated with multiple ordinary cameras. This process typically requires a huge number of cameras arranged at high density. In this paper, we propose a method to improve CGH using MVIs that obtains the MVIs by using voxel models rather than cameras. In the proposed method the voxel model is generated using the shape-from-silhouette (SFS) technique. We perform SFS using a small number of cameras arranged sparsely to create voxel models of objects and then generate the required number of images from these models by volume rendering. This enables us to generate CGHs using MVIs with just a small number of sparsely arranged cameras. Moreover, the proposed method arrange CGHs using MVIs at arbitrary positions.

Review of real-time reconstruction techniques for aerial-projection holographic displays

“…This method generates a hologram pattern from a series of 2-D images captured from different viewing positions on the hologram plane. Although the multiview-image method can be realized with holographic stereogram [73][74][75][76] or raywavefront conversion 77-84 approaches, they both acquire the complex amplitudes of a 3-D scene from the 2-D images using Fourier transforms. Hence, CGH calculations in the multiview-image method can be accelerated with FFT.…”

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. An efficient generation of the CGH was proposed in [6].…”

Recent progress in computer-generated holography for three-dimensional scenes

“…Note that light ray field L(x = ms, y = ns; θ x , θ y ) for each section is actually a perspective view of the 3D scene at the section center (x = ms, y = ns), with the field of view given by Equation (8). Therefore, a few techniques that use the multiple-perspective views to synthesize the hologram [7,8] can also be classified as ray-based methods.…”