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Proceedings Paper

Fast generation of hologram from range camera images based on the sub-lines and holographic interpolation
Author(s): Peter Tsang; W. C. Situ; W.-K. Cheung; T.-C. Poon; Changhe Zhou
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Paper Abstract

The intensity image and the depth images of a three-dimensional object scene can be captured with a commodity range camera, and converted into a Fresnel hologram. However, for some cameras, the images are subject to radial distortion, and too small to be visible in optical reconstruction. Moreover, the conventional hologram generation process with numerical means is significant. In this paper, we present a fast method to overcome the above-mentioned problems. First, the intensity and the depth images are transformed to reduce the radial distortion. Next, the images are interpolated horizontally, and converted into a sequence of sub-lines. Finally, the sub-lines are swiftly converted into a Fresnel hologram through padding along the vertical direction. The pair of interpolation process effectively increases the size and visibility of the reconstructed image. Although our method can be applied to different kinds of range cameras, we have selected the Swissranger model as a showcase to demonstrate the feasibility of the approach.

Paper Details

Date Published: 26 November 2012
PDF: 9 pages
Proc. SPIE 8556, Holography, Diffractive Optics, and Applications V, 85560R (26 November 2012); doi: 10.1117/12.999600
Show Author Affiliations
Peter Tsang, City Univ. of Hong Kong (Hong Kong, China)
W. C. Situ, City Univ. of Hong Kong (Hong Kong, China)
W.-K. Cheung, City Univ. of Hong Kong (Hong Kong, China)
T.-C. Poon, Virginia Polytechnic Institute and State Univ. (United States)
Shanghai Institute of Optics and Fine Mechanics (China)
Changhe Zhou, Shanghai Institute of Optics and Fine Mechanics (China)

Published in SPIE Proceedings Vol. 8556:
Holography, Diffractive Optics, and Applications V
Yunlong Sheng; Chongxiu Yu; Linsen Chen, Editor(s)

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