Modulation spectral method to analyze images transferred through disturbing media

T. V. Mironova; V. A. Zubov

doi:10.1117/12.350472

22 June 1999 Modulation spectral method to analyze images transferred through disturbing media

T. V. Mironova, V. A. Zubov

Proceedings Volume 3516, 23rd International Congress on High-Speed Photography and Photonics; (1999) https://doi.org/10.1117/12.350472
Event: Twenty-Third International Congress on High-Speed Photography and Photonics, 1998, Moscow, Russian Federation

Abstract

A version of the solution of the problem of simultaneous determination of the structure and characteristics of a two- dimensional signal and two-dimensional complex transfer or instrumental functions is considered. The solution is based on measurements of four independent intensity distributions for spectral representation of a signal: I_sr((omega) _x, (omega) _y) for a signal subjected to the transfer function, I_smr((omega) _x, (omega) _y) for a signal affected by additional specially produced modulation and the transfer function, I_srn((omega) _x, (omega) _y) for a signal of the form I_sr((omega) _x, (omega) _y) with a certain additional modulation at thy output, and I_smrn((omega) _x, (omega) _y) for a signal of the form I_smr((omega) _x, (omega) _y) with a certain modulation at the output. The intensity distributions obtained in the work make it possible to calculate the amplitude and phase components of the signal being analyzed and the transfer function. Additional modulations should provide visualization of phase information in one form or another. Linear amplitude modulation, which represents a particular form of spatial modulation, is analyzed. For this case, concrete expressions making it possible to calculate the amplitude and phase characteristics of the spectra of the signal being analy and the transfer function and, therefore, the characteristics of both the signal itself and the transfer function are obtained.

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T. V. Mironova and V. A. Zubov "Modulation spectral method to analyze images transferred through disturbing media", Proc. SPIE 3516, 23rd International Congress on High-Speed Photography and Photonics, (22 June 1999); https://doi.org/10.1117/12.350472

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KEYWORDS

Modulation

Modulators

Phase shift keying

Signal analyzers

Information visualization

Image analysis

Inverse optics

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