Infrared digital holograms of different statuettes are acquired. For each object, a sequence of holograms is recorded
rotating the statuette with an angular step of few degrees. The holograms of the moving objects are used to compose
dynamic 3D scenes that, then, are optically reconstructed by means of spatial light modulators (SLMs) using an
illumination wavelength of 532 nm. This kind of reconstruction allows to obtain a 3D imaging of the statuettes that could
be exploited for virtual museums.
"True 3D" display technologies target replication of physical volume light distributions. Holography is a promising
true 3D technique. Widespread utilization of holographic 3D video displays is hindered by current technological
limits; research activities are targeted to overcome such difficulties. Rising interest in 3D video in
general, and current developments in holographic 3D video and underlying technologies increase the momentum
of research activities in this field. Prototypes and recent satisfactory laboratory results indicate that holographic
displays are strong candidates for future 3D displays.
A color holographic reconstruction technique by using three light emitting diodes (LEDs) is described. Reflective
type phase-only spatial light modulators (SLMs) are used since they are suitable for in-line phase holograms.
Gerchberg-Saxton iterative algorithm is used for computing phase holograms. Three phase holograms are calculated
separately for red, green and blue colors, for a color reconstruction, and separately loaded to corresponding
SLMs. Three LEDs are used for illuminating those phase holograms and reconstructions are combined and
captured. Experimental results are satisfactory.