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Date: Thu, 21 Nov 1996 22:23:56 GMTServer: NCSA/1.5Content-type: text/htmlLast-modified: Wed, 20 Nov 1996 23:45:17 GMTContent-length: 4941<body bgcolor="#000000" text="ffffff" link="a4c7fc" vlink="5596fd"><title>Adam Deaton</title><p align=left><font size="+2"><b>Adam A. Deaton</font></b><br>Graduate Student<br><I>Department of Computer Science<br>33 Oxford Street, Cambridge MA 02138 </I><br clear=all><p align=left>My advisor is Professor <!WA0><A HREF="http://das-www.harvard.edu/users/faculty/Leslie_Valiant/Leslie_Valiant.html"> Leslie Valiant </A><h2> projects & interests</h2><p> My current interests are in parallel algorithms and programming, theory of computation, and graphics and visualization. These are someprojects I've worked on recently:<table clear = all><tr> <td> <!WA1><ahref="http://www.das.harvard.edu/users/students/Adam_Deaton/lobster.tiff"> <!WA2><img src="http://www.das.harvard.edu/users/students/Adam_Deaton/lobster-small.gif" width = 150></a> <td> This picture (from a CT scan of a lobster) was rendered using 8 Sunworkstations, a modified version of Phil Lacroute's <!WA3><ahref="http://www-graphics.stanford.edu/software/volpack/">VolPack</a> software, and the <!WA4><ahref="http://www.comlab.ox.ac.uk/oucl/oxpara/bsplib1.htm">Oxford BSP library</a> (Thanks to <!WA5><a href="http://www.cs.princeton.edu/~jmd">John Danskin </A> for the data.)<tr> <td> <!WA6><a href="http://www.geom.umn.edu/~deaton/cgi-bin/start.cgi"><!WA7><img src="http://www.das.harvard.edu/users/students/Adam_Deaton/frog.gif" width = 150></a> <td> Recently, I worked on aproject with Rocco Servedio involving human correlation-detectionability. We have a <!WA8><a href="http://www.das.harvard.edu/users/students/Adam_Deaton/animal-paper.ps.Z"> paper</a> describingthe results of our experiment. Try our experiment over the web! Startby clicking on the frog at left. (The first page may take a while toload.)<tr> <td> <!WA9><a href="http://www.das.harvard.edu/users/students/Adam_Deaton/brain-labeled.tiff"> <!WA10><img src="http://www.das.harvard.edu/users/students/Adam_Deaton/brain-small.gif" width = 150></a> <td> This isan image made up of 80 MR scans of a human brain. I took thedata from the <!WA11><a href="http://www.med.harvard.edu/AANLIB/home.html"> WholeBrain Atlas</a>.<p> The colors show a labelling of the brain into four possiblematerials (unknown voxels are transparent). The algorithm involvedstochastically optimizing this classification using the Swendsen-Wangalgorithm (originally developed for simulations in statisticalmechanics.) It took a long time. This was part of a final project for<!WA12><a href= "http://www.das.harvard.edu/cs/academics/courses.html">Computer Vision</a>. <!WA13><a href="http://www.das.harvard.edu/users/students/Adam_Deaton/brain-paper.ps.Z"> This </a> is a paperdescribing my project. <tr> <td><!WA14><a href="http://www.das.harvard.edu/users/students/Adam_Deaton/head.mpg"> <!WA15><img src="http://www.das.harvard.edu/users/students/Adam_Deaton/head.008.gif" width=150></a> <!WA16><a href="http://www.das.harvard.edu/users/students/Adam_Deaton/melt.mpg"> <!WA17><img src="http://www.das.harvard.edu/users/students/Adam_Deaton/melt.005.gif" width=150></a><td> Another project involving volume rendering: I wrote a simplevolume renderer as a <!WA18><a href="http://www.das.harvard.edu/cs/academics/courses.html"> ComputerGraphics </a> final project. These two images are frames from shortvideo sequences. Click on them for the animations. (Thanks toProfessor <!WA19><a href=http://www.cs.princeton.edu/~dpd> David Dobkin</a>for letting me use Princeton's RealityEngine to make these.) The CTdata are classified into three materials: bone (white), fat (greenish),and soft tissue (orange). The first animation shows bone rendered 70%opaque, fat 50% opaque, and soft tissue 40% opaque. In the second,first soft tissue, and then fat are rendered gradually moretransparent, leaving only bone. See ``Volume Rendering'', by Drebin,et al in <i>SIGGRAPH '88</i> for more details of the renderingalgorithm. <tr><td><!WA20><a href="http://www.geom.umn.edu/apps/lafite"><!WA21><imgsrc="http://www.das.harvard.edu/users/students/Adam_Deaton/lafite.gif" width = 150></a> <td> <!WA22><a href="http://www.mckinley.com/"> <!WA23><img src="http://www.das.harvard.edu/users/students/Adam_Deaton/3star44pix.gif" width=90 align=top></a><p> I wrote a program called lafitefor exploring the symmetries of 2-dimensional hyperbolic isometrygroups. It has a limited interactive WWW front-end which you can tryby clicking on the picture at left. This <!WA24><a href="http://www.das.harvard.edu/users/students/Adam_Deaton/thesis.ps.Z">paper</a> (500K, compressed PS) contains some background about lafiteand the mathematics behind it. The full version of lafite runs onlyon SGI's, the source is available <!WA25><ahref="ftp://ftp.geom.umn.edu/priv/deaton/lafite.tar.Z">here</a>.(Apologies for the out-of-date documentation.) <tr> <td> <!WA26><a href="http://www.das.harvard.edu/users/students/Adam_Deaton/trees.tiff"> <!WA27><img src="http://www.das.harvard.edu/users/students/Adam_Deaton/trees.gif" width=150></a><td> I also wrote some code for the environmental artist Agnes Denes.Her current project ``<!WA28><a href="http://nttad.com/asci/ad.html">TreeMountain</a>'' involves planting 10,000 trees on a sculpted man-mademountain in the Pinsio gravel pits, Ylojarvi, Finland. This pictureshows a version of the pattern with only about 1,700 trees. Thisproject was work with Professor John Conway and Tim Hsu at thePrinceton <!WA29><a href="http://www.math.princeton.edu"> mathematicsdepartment</a>. </table><h2>useful links</h2><li> <!WA30><A HREF="http://www-cgi.cs.cmu.edu/htbin/perl-man">Perl Manual</A><li> <!WA31><a href=http://www.das.harvard.edu/users/students/Adam_Deaton/jpl-talk.ps.gz>Some slides about BSP.</a><p><hr><p><i><!WA32><a href="mailto:aabd@das.harvard.edu">aabd@das.harvard.edu</a>,<!WA33><a href="http://www.harvard.edu">Harvard University</a>, <!WA34><ahref="http://das-www.harvard.edu">Division of AppliedSciences</a></i>. <p>⌨️ 快捷键说明
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