Independent component analysis applied to digital holograms of three-dimensional objects

Jonathan Maycock; Conor P. Mc Elhinney; John B. McDonald; Thomas J. Naughton; Bahram Javidi

doi:10.1117/12.617441

10 September 2005 Independent component analysis applied to digital holograms of three-dimensional objects

Jonathan Maycock, Conor P. Mc Elhinney, John B. McDonald, Thomas J. Naughton, Bahram Javidi

Proceedings Volume 5908, Optical Information Systems III; 590806 (2005) https://doi.org/10.1117/12.617441
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We have successfully applied Independent Component Analysis to the removal of background speckle noise from digital holograms. Additive noise removal techniques do not perform well on speckle, which is better characterized as multiplicative noise. In addition, speckle contains 3D information and so cannot be removed completely. We use a blind source separation approach to the reduction of speckle noise in digital holograms. Independent Component Analysis computes a linear transformation of a multi-dimensional distribution that minimizes the statistical dependence between the components. It can be seen as an extension of principal component analysis where the transformed bases do not need to be orthonormal. Although a linear technique, we show how Independent Component Analysis can be applied to the reduction of background speckle in digital holograms. We have captured our digital holograms of three-dimensional objects using phase-shift digital interferometry. In addition, the technique can be extended and applied to segmentation and pattern recognition problems on digital holograms of three-dimensional objects. Results are provided using simulated and optical data.

Citation Download Citation

Jonathan Maycock, Conor P. Mc Elhinney, John B. McDonald, Thomas J. Naughton, and Bahram Javidi "Independent component analysis applied to digital holograms of three-dimensional objects", Proc. SPIE 5908, Optical Information Systems III, 590806 (10 September 2005); https://doi.org/10.1117/12.617441

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