A stereoscopic image consists of a left and a right view, produced by two optical sensors, of the same scene from two slightly distant viewpoints, but imperatively at the same height and distance from the foreground. These two views are then presented to an observer in such a way that the image from the left camera is seen only by the left eye, and the image from the right camera by the right eye, to give a relief effect. This effect is created by parallax. Since the mid-nineteenth century, various manufacturers have produced dual-lens cameras, and entire collections of stereoscopic photographs of great historical and artistic interest still exist, but are rarely shown. This research demonstrates that it is possible to create 3D holograms from any pair of stereoscopic images, using the latest artificial intelligence techniques, combined with CHIMERA, the latest generation of digital holographic printing system, and to make this heritage more accessible to the general public.
CHIMERA is the third generation of digital holographic printing system based on three low-power continuous lasers combined with Ultimate U04 silver-halide holographic glass plates. This holoprinter prints at 50 Hz, 120° full-parallax, and full-color digital reflection holograms or holographic optical elements with a size of up to 60×80 cm and a 250 μm hogel size. An in-house scanner was designed to record full-parallax CHIMERA holograms of still object scenes. This scanner can automatically record a still object scene from 10×13 cm to 60×80 cm with a 4K camera and a controlled turning table. The scanner records a still object scene in 2 hours with 768 horizontal images, 192 elevation levels, and a 180 degrees rotation. From the obtained perspective images, in-house software calculates all the hogels for the CHIMERA printing. This paper discusses the different characteristics of this in-house scanner and analyzes its advantages, benefits, and limitations for applications such as museums, art, education, architecture, and advertising.
Typically, commercially available Head-up display (HUD) systems use Pepper's ghost, "floating hologram", systems. Our proposed system uses holographic optical element (HOE) to minimize the volume of conventional systems, provide high-depth and large-screen augmented images, and propose a method to measure that from a human factor perspective..
CHIMERA is the third generation of digital holographic printing systems. CHIMERA is based on the use of three lowpower red, green, and blue continuous lasers combined with the Ultimate U04 ultra-fine grain silver-halide holographic glass plates. Acquisition of perspective images can be done with an in-house designed cylindrical scanner for real still objects or with software for computer-generated objects. This holoprinter is capable of printing at a frequency equal or greater than 50 hogels per second, full-color, 120° full-parallax digital reflection holograms or holographic optical elements with a size of up to 60×80 cm and a hogel size ranging from 250 to 500 μm. The color rendition and the parallax—horizontal and vertical—of this printer are so good that, with a 250 μm hogel size, an observer can hardly detect a difference between an analog ultra-realistic full-color Denisyuk hologram and a digital CHIMERA hologram. This paper discusses and compares the different characteristics of the two techniques—CHIMERA and Denisyuk—for still object recording and analyzes their advantages, benefits, and limitations.
This paper presents an upgrade of the thaumatrope, an optical toy and a pre-cinematographic animation device that was popular in the 19th century, by addition of ultra-realistic full-color holograms. It explains the working principles of this new device and evaluates its performances. To build this new kind of thaumatrope, two full-color analog transplane holograms of two different 3D objects are recorded with the silver halide color holographic material Ultimate 04 and mounted on each side of a rotating disc. The operation of the holographic thaumatrope is successfully demonstrated. When two pieces of string are attached to the disc are twirled quickly between the fingers, the disc rotates on its axis and the two transplane holograms appear to combine into one.
This paper presents the Zerotrope, an improvement of the classic phenakistiscope and zoetrope devices, used to create a new 360-degree 3D display by addition of a single ultra-realistic full-color hologram. The Zerotrope is built with a single zero-degree transplane hologram mounted on a disc rotating at constant speed. This hologram displays a series of 3D characters showing the sequential phases of an animation and arranged radially around the center of the disc. When a stroboscopic lamp synchronized with the rotation illuminates this hologram, the recorded characters are animated as in a stop-motion movie. The operation of the Zerotrope is successfully demonstrated and shows the effect of the holographic reality (HR) without the need for special glasses or other viewing aids.
This paper presents an update of the traditional museographic diorama, with the addition of a full-color H2 analog hologram. It explains how it works, and indicates the benefits for museums. Unlike the Denisyuk color technique where the final image appears completely behind the surface of the hologram, the H2 hologram is a transplane image. To realize this new kind of diorama, an ultra-realistic "transplane" color hologram is recorded with the Ultimate holographic material and blends into a real three-dimensional scene where the viewer no longer knows where the real ends and where the virtual begins. The play of the hologram’s lighting makes possible the objects appear or disappear in the decors and interact with the public. The result boosts the little outdated traditional diorama and meets the expectations of a modern audience interested in mixed reality.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.