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From: kassover@jupiter.crd.ge.com (David Kassover)
Newsgroups: comp.graphics
Subject: Re: Laplacian Pyramid Image Compression?
Message-ID: <6730@crdgw1.crd.ge.com>
Date: 10 Apr 90 20:46:27 GMT
References: <8795@pt.cs.cmu.edu> <5532@amiga.UUCP>
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In article <5532@amiga.UUCP> jimm@superman.UUCP (Jim Mackraz) writes:
>In article <8795@pt.cs.cmu.edu> mlm@nl.cs.cmu.edu (Michael L. Mauldin) writes:
>)Has anyone in UseNetLand implemented the Laplacian Pyramid image
>)compression algorithm?  I believe it was developed at RCA --
>
>I've toyed with it; sometime's it's called the Burt pyramid.  I don't
>have the specific reference (sorry), but a paper appears in a
>book on "Multi-resolution image processing" or something, edited
>by Rosenthal, I think.  yeesh.

 Are these the same kind, or similar to, the pyramids that
Rosenfeld was investigating at the U of Maryland about 9 years
ago?  I must admit that I'm not clear on the name nor the
university after all this time...

Dr. R------ gave a talk at the Graphics Center (colloquial name)
at RPI in 1980 or 1981.  If memory serves me properly,  Dr. R------ was
using simple pixel averaging to generate "pyramids" of quadtree
and/or octree data.  I specifically recall him saying that as far
as image analysis and interpretation (That blotch over there:
That's a Tank.  No don't shoot it, it's ours) quadtrees and
pyramids where not much use, but the pyramid in particular was
rather usefull for STORAGE and DISPLAY purposes.