TY - GEN
T1 - Holography of incoherently illuminated 3D scenes
AU - Shaked, Natan T.
AU - Rosen, Joseph
PY - 2008/6/17
Y1 - 2008/6/17
N2 - We review several methods of generating holograms of 3D realistic objects illuminated by incoherent white light. Using these methods, it is possible to obtain holograms with a simple digital camera, operating in regular light conditions. Thus, most disadvantages characterizing conventional holography, namely the need for a powerful, highly coherent laser and meticulous stability of the optical system are avoided. These holograms can be reconstructed optically by illuminating them with a coherent plane wave, or alternatively by using a digital reconstruction technique. In order to generate the proposed hologram, the 3D scene is captured from multiple points of view by a simple digital camera. Then, the acquired projections are digitally processed to yield the final hologram of the 3D scene. Based on this principle, we can generate Fourier, Fresnel, image or other types of holograms. To obtain certain advantages over the regular holograms, we also propose new digital holograms, such as modified Fresnel holograms and protected correlation holograms. Instead of shifting the camera mechanically to acquire a different projection of the 3D scene each time, it is possible to use a microlens array for acquiring the entire projections in a single camera shot. Alternatively, only the extreme projections can be acquired experimentally, while the middle projections are predicted digitally by using the view synthesis algorithm. The prospective goal of these methods is to facilitate the design of a simple, portable digital holographic camera which can be useful for a variety of practical applications.
AB - We review several methods of generating holograms of 3D realistic objects illuminated by incoherent white light. Using these methods, it is possible to obtain holograms with a simple digital camera, operating in regular light conditions. Thus, most disadvantages characterizing conventional holography, namely the need for a powerful, highly coherent laser and meticulous stability of the optical system are avoided. These holograms can be reconstructed optically by illuminating them with a coherent plane wave, or alternatively by using a digital reconstruction technique. In order to generate the proposed hologram, the 3D scene is captured from multiple points of view by a simple digital camera. Then, the acquired projections are digitally processed to yield the final hologram of the 3D scene. Based on this principle, we can generate Fourier, Fresnel, image or other types of holograms. To obtain certain advantages over the regular holograms, we also propose new digital holograms, such as modified Fresnel holograms and protected correlation holograms. Instead of shifting the camera mechanically to acquire a different projection of the 3D scene each time, it is possible to use a microlens array for acquiring the entire projections in a single camera shot. Alternatively, only the extreme projections can be acquired experimentally, while the middle projections are predicted digitally by using the view synthesis algorithm. The prospective goal of these methods is to facilitate the design of a simple, portable digital holographic camera which can be useful for a variety of practical applications.
KW - Digital and computer holography
KW - Incoherent holography
KW - Three-dimensional acquisition and processing
UR - http://www.scopus.com/inward/record.url?scp=44949265373&partnerID=8YFLogxK
U2 - 10.1117/12.786894
DO - 10.1117/12.786894
M3 - Conference contribution
AN - SCOPUS:44949265373
SN - 9780819471819
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Defense and Security 2008 - Special Sessions on Food Safety, Visual Analytics, ResourceRestricted Embedded and Sensor Networks, and 3D Imaging and Display
T2 - Defense and Security 2008 - Special Sessions on Food Safety, Visual Analytics, ResourceRestricted Embedded and Sensor Networks, and 3D Imaging and Display
Y2 - 17 March 2008 through 18 March 2008
ER -