An Image Replicating Technique For Minimizing Cross Artifacts In Computer Generated Holograms

William J Dallas

doi:10.1117/12.944153

24 May 1988 An Image Replicating Technique For Minimizing Cross Artifacts In Computer Generated Holograms

William J Dallas

Proceedings Volume 0884, Computer-Generated Holography II; (1988) https://doi.org/10.1117/12.944153
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

Generating a hologram by computer is essentially plotting a Fourier transform. Many of the hologram's properties are manifestations of simple Fourier mathematical relations. Although the relations are simple, finding the proper relation to explain an effect sometimes is not. The origin of this work was actually a question put to me some years ago about Fourier transforms in the context of image processing for scanning electron microscopy. The question: Why does a strong cross structure sometimes appear in an image's Fourier transform when we know that no corresponding structures exist in the object? The answer is well known, but let us delay discussing it until the next section where we explain the question's relevance to the computer generated hologram (CGH).

Citation Download Citation

William J Dallas "An Image Replicating Technique For Minimizing Cross Artifacts In Computer Generated Holograms", Proc. SPIE 0884, Computer-Generated Holography II, (24 May 1988); https://doi.org/10.1117/12.944153

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