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   -> Volume 1, Issue 4


Wavelet paper published.
 
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Paul Kainen, University of Maryland.
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PostPosted: Sun Aug 16, 1992 10:25 pm    
Subject: Wavelet paper published.
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Wavelet paper published.

H. J. Caulfield, Wavelet transforms and their relatives, Photonics Spectra,
Aug. 1992, p.73.
<< Several interesting claims are made regarding the power of wavelet
transform analysis to compress data and do pattern recognition.
It is argued that optical implementation allows continuous changes
in frequency, location and amplitude of wavelets.
Using a "matched filter" model, a signal of dimension s is expanded
into a signal of dimension 2s for s = 1 and 2. However, the known
problems of optical implementation such as alignment and analog
control of error are not addressed. Caulfield asserts that "This
research is likely to represent an important new direction for
optical processing." Since Gabor and Fourier transforms both have
natural optical implementations, Caulfield is surely correct in his
conclusion but supporting evidence may need modification. >>
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