Results 181 to 190 of about 5,115,539 (219)
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Computer generated holography: an introduction
Applied Optics, 1987A group of papers in the 15 Oct. 1987 issue of Applied Optics describe some recent advances in the field of computer generated holograms, and delineate historical trends.
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Computer generation of binary Fresnel holography
Applied Optics, 2011Binarization of Fresnel holograms by direct thresholding based on the polarity of the fringe pattern is studied. It is found that if the hologram is binarized (i.e., for black and white hologram pixels) in this manner, only the edges of the object are preserved in the reconstructed image. To alleviate the errors caused by binarization, the use of error
Tsang, Peter +3 more
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2015
Digital holography optically generates a hologram, which is then recorded on a CCD camera, and an image is reconstructed using digital techniques. This chapter discusses the converse, i.e., the hologram is digitally generated and the reconstruction is performed optically, a process known as computer-generated holography (CGH).
Georges T. Nehmetallah +2 more
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Digital holography optically generates a hologram, which is then recorded on a CCD camera, and an image is reconstructed using digital techniques. This chapter discusses the converse, i.e., the hologram is digitally generated and the reconstruction is performed optically, a process known as computer-generated holography (CGH).
Georges T. Nehmetallah +2 more
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Computer-Generated Holography Algorithms
Frontiers in Optics + Laser Science 2023 (FiO, LS), 2023Abstract not available.
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Computer-Generated Holography and Optical Testing
Optical Engineering, 1980A computer-generated hologram is a geometric pattern that can be used as a precise reference in an optical test. Computer-generated holograms can be used to make reference wavefronts that would be very difficult and expensive to make by other methods. This paper reviews the development of computer-generated holograms for optical testing.
John S Loomis
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Computer-Generated Holography as a Generic Display Technology
Computer, 2005Computer-generated holography technique is a powerful technology suitable for a wide range of display types, including 2D, stereoscopic, autostereoscopic, volumetric, and true 3D imaging. Computer-generated holography is an emerging technology, made possible by increasingly powerful computers, that avoids the interferometric recording step in ...
Chris Slinger +2 more
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Full phase and amplitude control in computer-generated holography
Optics Letters, 2009We report what we believe to be the first realization of a computer-generated complex-valued hologram recorded in a single film of photoactive polymer. Complex-valued holograms give rise to a diffracted optical field with control over its amplitude and phase.
Fratz, M. +2 more
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An Application of Computer-Generated Holography in Optics
2010 International Conference on Intelligent Computing and Cognitive Informatics, 2010A basic problem of this paper is the application of computer-generated holography to optics. Firstly, the definition of anamorphic fractional correlation is introduced and it is pointed out this operation is successfully used to compare the similarities of two signals. This paper describes two computational processes to obtain the correlation result by
Shiwei Xie, Hongying Xiao
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New approach to computer-generated holography
SPIE Proceedings, 1990A new fast approach to computer-generated holography for 3-D objects points in arbitrary positions in 3-D space is presented. The approach is based on fast computation of weighted zero-crossings their accumulation and thresholding to achieve a coded hologram to be physically generated. 1.
Okan K. Ersoy, C. Bubb
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New approaches to computer-generated holography
Annual Meeting Optical Society of America, 1989Computer-generated holograms have limitations such as in quality of coding, space-bandwidth product, and plotting technologies. In representation of 3-D information, the problem of how to represent 3-D scenes so that they can be viewed with satisfaction presents an important challenge.
O. K. Ersoy, C. Bubb, J. Brede
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