New developments in active and passive 3D image sensing, visualization, and processing

Bahram Javidi; Enrique Tajahuerce; Manuel Martínez-Corral; Thomas J. Naughton; Yann Frauel

doi:10.1117/12.633672

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26 October 2005 New developments in active and passive 3D image sensing, visualization, and processing

Bahram Javidi, Enrique Tajahuerce, Manuel Martínez-Corral, Thomas J. Naughton, Yann Frauel

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Proceedings Volume 5986, Unmanned/Unattended Sensors and Sensor Networks II; 598601 (2005) https://doi.org/10.1117/12.633672
Event: European Symposium on Optics and Photonics for Defence and Security, 2005, Bruges, Belgium

Abstract

We review two different techniques for visualization and processing of three-dimensional (3D) objects based on passive and active optical sensing. First, we describe the basis of a passive-sensing technique based on integral imaging. Also, we show that it is possible to improve the depth of field of this method by using amplitude-modulated microlens arrays. Second, we describe an active-sensing technique based on digital holography. Finally, we apply both techniques to de-velop 3D image processing applications. In particular, we design two different 3D pattern recognition techniques. Both of them are based in storing the 3D data in two-dimensional (2D) form. In this way, it is possible to recognize 3D objects by performing 2D correlations or applying neural network techniques. Experimental results are presented.

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Bahram Javidi, Enrique Tajahuerce, Manuel Martínez-Corral, Thomas J. Naughton, and Yann Frauel "New developments in active and passive 3D image sensing, visualization, and processing", Proc. SPIE 5986, Unmanned/Unattended Sensors and Sensor Networks II, 598601 (26 October 2005); https://doi.org/10.1117/12.633672

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KEYWORDS

3D image processing

Digital holography

3D image reconstruction

Integral imaging

Microlens array

Holograms

Image sensors

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