Journal ArticleDOI
Technique for measuring grating frequency.
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TLDR
Experimentally the real and imaginary parts of the Fourier spectrum are separated and used to detect the nature of the object, i.e., whether the object is an odd or even function or a combination of both.Abstract:
Experimentally the real and imaginary parts of the Fourier spectrum are separated and used to detect the nature of the object, i.e., whether the object is an odd or even function or a combination of both. A modified Twyman-Green setup is used for this purpose. This type of splitting of the object function into even and odd parts may become useful in different fields of image processing. As an application the same technique is used for accurate measurement of the grating frequency.read more
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Journal ArticleDOI
A new method for measuring the phase of the fourier spectrum
TL;DR: In this article, a new optical method is proposed to separate the real and imaginary parts of a complex Fourier spectrum by using different optical polarization channels in an optical information processing system.