In a digital hologram, 3D information of an object is recorded on a holographic fringe pattern obtained from the interference pattern between the object and reference waves, or the numerical diffraction equations. Numerical equation-based hologram generation is highly computationally complex because the relationship between a point of the object and all the positions on a fringe pattern need to...

A high-gain screen can be made as a sandwich of a hologram and a retroreflective screen material. When a hologram is used in front of the screen instead of the screen material alone, the position of high-brightness viewing can be moved to any desired angle rather than being directed back along the projection beam.

This paper describes a rendering pipeline for digital hologram synthesis. The pipeline is capable of handling triangle meshes, directional light sources, texture coordinates and advanced illumination models. Due to the huge computational requirements of hologram synthesis only the HPO holograms are considered.

Active studies on holography, which is the ideal and final goal of 3-dimensional (3D) image display, have been undertaken mainly in the US, Europe, and Japan. In particular, real-time holographic video is the core technology for the next-generation 3D television (TV). The computer-generated hologram (CGH) was proposed by Brown and Lohmann [1] in 1966. It obtains an interference pattern through ...

The light field is a 4D recording that includes the positional and directional information for incoming rays of an image. A hologram is a recording that reconstructs the complex wavefront of an image to include parallex and depth cues. We relate these two concepts using the Wigner distribution, and attempt to recreate a light field recorded scene using a phase only hologram.

We present a new method to numerically reconstruct images on a tilted plane by digital holography in Fourier configuration. The proposed technique is based on a quadratic deformation of spatial coordinates of the digital hologram. By this approach we demonstrate that it is possible to recover the extended focus image (EFI) of a tilted object in a single reconstruction step from the deformed hol...

Off-axis digital holography typically uses a beam splitter to combine reference and object waves at an angle matched to the sampling period of the sensor array. The beam splitter determines the thickness of the recording system. This paper describes and demonstrates a total internal reflection hologram that replaces the beam splitter and enables hologram recording over a large aperture with a t...

The application of conventional reflector-type compact antenna test ranges (CATR’s) becomes increasingly difficult above 100 GHz. The main problems are the tight surface accuracy requirements for the reflectors and, therefore, the high manufacturing costs. These problems can be overcome by the use of a hologram type of compact range in which a planar hologram structure is used as a collimating ...

We introduce M/# as a metric for characterizing holographic memory systems. M/# is the constant of proportionality between diffraction efficiency and the number of holograms squared. Although M/# is a function of many variables in a holographic recording system, it can be measured from the recording and erasure of a single hologram. We verify experimentally that the diffraction efficiency of mu...