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Date: Mon, 11 Nov 1996 17:31:00 GMTServer: NCSA/1.5Content-type: text/htmlLast-modified: Mon, 23 Oct 1995 20:31:24 GMTContent-length: 1886<html><head><title>Comparison of Skeletonization Methods</title></head><body><h1>Comparison of Skeletonization Methods</h1><BR><HR SIZE=3><TABLE BORDER=0><TR ALIGN=CENTER VALIGN=TOP><TD><IMG WIDTH=323 HEIGHT=243 HSPACE=3 VSPACE=2 SRC="hw1-result/thin/hand.gif"> <BR><H3>Thinning</H3></TD><TD><IMG WIDTH=361 HEIGHT=243 HSPACE=3 VSPACE=2 SRC="hw1-result/thin/hand22.gif"> <BR><H3>Thinning 22.5</H3></TD></TD></TR><TR ALIGN=CENTER VALIGN=TOP><TD><IMG WIDTH=323 HEIGHT=243 HSPACE=3 VSPACE=2 SRC="hw1-result/medial-cityblock/hand.gif"> <BR><H3>MAT (City-block)</H3></TD><TD><IMG WIDTH=363 HEIGHT=242 HSPACE=3 VSPACE=2 SRC="hw1-result/medial-cityblock/hand22.gif"> <BR><H3>MAT (City-block) 22.5</H3></TD></TD></TR><TR ALIGN=CENTER VALIGN=TOP><TD><IMG WIDTH=323 HEIGHT=243 HSPACE=3 VSPACE=2 SRC="hw1-result/medial-chessboard/hand.gif"> <BR><H3>MAT (Chessboard)</H3></TD><TD><IMG WIDTH=359 HEIGHT=242 HSPACE=3 VSPACE=2 SRC="hw1-result/medial-chessboard/hand22.gif"> <BR><H3>MAT (Chessboard) 22.5</H3></TD></TD></TR><TR ALIGN=CENTER VALIGN=TOP><TD><IMG WIDTH=323 HEIGHT=243 HSPACE=3 VSPACE=2 SRC="hw1-result/medial-euclid/hand.gif"> <BR><H3>MAT (Approx. Euclidean)</H3></TD><TD><IMG WIDTH=361 HEIGHT=240 HSPACE=3 VSPACE=2 SRC="hw1-result/medial-euclid/hand22.gif"> <BR><H3>MAT (Approx. Euclidean) 22.5</H3></TD></TD></TR></TABLE><BR><HR SIZE=3><br><H3>Some Observations on the Results</H3><P>Notice that the thinning method produces connected skeletons whilethe Medial Axis Transform (MAT) methods do not, even for the approximateEuclidean case. On the other hand, notice that the MAT is relativelyinvariant to orientation of the object, while the thinning method variessignificantly with orientation. <A href="hw1-result/hw1-comments.txt"><H3>Bryan's comments on the grading of the assignment</H3></A></body></html>
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