Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!atha!aunro!alberta!edson!news
From: slim@ee.ualberta.ca (Sau Tsien Lim)
Newsgroups: comp.graphics
Subject: Line Thinning algorithms..
Keywords: Lines, Landsat, DEMs
Message-ID: <1991Jun16.223452.2252@ee.ualberta.ca>
Date: 16 Jun 91 22:34:52 GMT
Expires: June 20, 1991
References: computer graphics, line
Sender: news@ee.ualberta.ca
Reply-To: slim@ee.ualberta.ca (Sau Tsien Lim)
Distribution: na
Organization: University of Alberta Electrical Engineering
Lines: 40


Hello Everyone,

	I am looking for a line thinning algorithm. I would like to
	convert thick raster lines into single-pixel-width lines. 
	Does anyone know of one? Are there any programs out there that 
	performs line thinning? (Skeletonizing)

	Any comments or suggestions are welcome.


	Few weeks ago, I posted a request for any free DEMs and landsat
	images. As indicated by most of the people who are kind enough to
	give my suggestions, these two items are very hard to find and they
	cost a lot to purchase. So far, I only receive one landsat
	image contributed by Larry Ammann and nothing in DEMs. Larry is
	kind enough to provide me with a 7 band landsat dataset of Denton
	County, Texas. The resolution of the image is 512x512.

	I have now put this dataset and a few other landsat images I 
	gathered from the net for anonymous ftp. They are located in
	site:		bode.ee.ualberta.ca (129.128.16.96)
	directory:	/pub/landsat

	Enjoy!

	slim...

--
---------------------------------------------------------------------------
Sau-Tsien, LIM  (HP 9000/835  HP-UX 7.0					)      
		(Department of Electrical Engineering			)
		(University Of Alberta, Edmonton, Alberta, Canada	)
		(uucp: ...!alberta!edson!bode!slim			)
		(internet: slim@bode.ee.ualberta.ca      129.128.16.96	)
		(Addr: BOX 60257 UofA Postal Outlet			)
		(      Edmonton, Alberta				)
		(      Canada T6G 2S5					)
		(Tel.: (403) 439-9770					)
---------------------------------------------------------------------------