Abstract
In this paper we describe two methods of constructing optical Fourier transforms for use in image processing. Both the coherent parallel and converging beam Fourier transform methods are presented. The converging beam set-up was used to obtain results presented in another paper (1) at this NATO school but its full discussion at that time was postponed until now. The input objects chosen for this study are those of snow crystals. They are most appropriate since their Fourier transforms contain both some high and low spatial frequencies, not to mention they are beautiful patterns to observe.
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References
Almeida, Silverio P. Optical Metrology of Fish Scales, (presented at this NATO school).
Goodman, J. W. Introduction to Fourier Optics (McGraw-Hill Pub. Co., New York, 1968 ).
Stark, H. Applications of Optical Fourier Transforms. ( Academic Press, New York, 1982 ).
Almeida, S. P. and H. Fujii. Applied Optics, Vol. 18, No. 10, 1663–1667 (1979).
Joyeux, D. and S. Lowenthal. Applied Optics, Vol. 21, No. 23, 4368–4372, (1982).
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© 1987 Martinus Nijhoff Publishers, Dordrecht
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Almeida, S.P., Puang-ngern, S. (1987). Optical Fourier Transform Construction. In: Soares, O.D.D. (eds) Optical Metrology. NATO ASI Series, vol 131. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3609-6_12
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DOI: https://doi.org/10.1007/978-94-009-3609-6_12
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8115-3
Online ISBN: 978-94-009-3609-6
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