Computational holographic image reconstruction

Jerome H. Milgram

doi:10.1117/12.469257

3 June 2002 Computational holographic image reconstruction

Jerome H. Milgram

Proceedings Volume 4659, Practical Holography XVI and Holographic Materials VIII; (2002) https://doi.org/10.1117/12.469257
Event: Electronic Imaging, 2002, San Jose, California, United States

Abstract

Computational methods for image plane reconstruction form a hologram are developed. The methods are based on use of Fast Fourier Transform which greatly aids the computation speed. Even more computing speed is afforded by a special-purpose digital signal processor programmed for this application. The goal is to greatly speed up the process of quantitative image reconstruction as compared to 3D scanning of optically reconstructed images. Examples of in-line holographically recorded images of marine micro-organisms are shown and computed images from computationally synthesized particle field hologram are provided since this is of interest for 3D particle image velocimetry. A fast computational method of counting the number of small objects recorded on a hologram is developed and used. A measure of the depth of field is given which shows that for very fine depth resolution, off- axis holograms are recommended. However, these require more pixels and image memory so they are limited to smaller areas than in-line holograms.

Citation Download Citation

Jerome H. Milgram "Computational holographic image reconstruction", Proc. SPIE 4659, Practical Holography XVI and Holographic Materials VIII, (3 June 2002); https://doi.org/10.1117/12.469257

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