Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!zaphod.mps.ohio-state.edu!mips!apple!kchen
From: kchen@Apple.COM (Kok Chen)
Newsgroups: comp.graphics
Subject: Re: image processing texts
Message-ID: <38529@apple.Apple.COM>
Date: 11 Feb 90 18:43:34 GMT
References: <26751@cup.portal.com> <1990Feb9.181206.22161@athena.mit.edu> <656@xdos.UUCP>
Organization: Apple Computer Inc., Cupertino, CA
Lines: 34

doug@xdos.UUCP (Doug Merritt) writes:

>I'm still looking for a good treatment of Walsh functions/analysis (any
>suggestions?)


I would recommend

	Henning F. Harmuth, "Non-sinusoidal Waves for Radar and
	Radio Communication," Advances in Electronics and Electron
	Physics, Supplement 14, Academic Press, 1981.
	ISBN 0-12-014575-8.

Like many Academic Press books, be prepared to pay a lot for this gem.
It is written by one of the most ardent Hardamard-transform bigots, and
contains all sorts of tidbits on Walsh-Hadamard functions.  Definitely
not a DSP-cookbook manuscript, and probably considered gibberish by those 
brought up on "Rabiner and Gold;" but definitely can be appreciated by
lateral thinkers, even those who have never before encountered synthetic
aperture image processing.

I am still trying to find a 1977 book by Harmuth called "Sequency Theory -
Foundations and Applications."  Any ideas, anyone?

Folklore heard eons ago: once, when accused of splattering the radio
spectrum with Walsh functions, Harmuth turned the table around and 
accused the Fourier types of "splattering" inside his Walsh-basis 
space with sinusoidal functions. :-) :-)


Regards,

Kok Chen			kchen@apple.com, KK6DP
Apple Computer, Inc.