<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><span class="" style="font-size: 14px; orphans: 2; widows: 2;">UNIVERSITY OF CHICAGO</span><br class="" style="font-size: 14px; orphans: 2; widows: 2;"><span class="" style="font-size: 14px; orphans: 2; widows: 2;">DEPARTMENT OF COMPUTER SCIENCE</span></div><div class="" style="orphans: 2; widows: 2;"><span class="" style="font-size: 14px;">PRESENTS</span></div><div class="" style="orphans: 2; widows: 2;"><span class="" style="font-size: 14px;"><br class=""></span></div><div class="" style="orphans: 2; widows: 2;"><div class="" style="margin: 0px; line-height: normal;"><img apple-inline="yes" id="09FCC690-26D7-4400-88F0-7884284AD664" src="cid:D0CE7050-9229-4568-9584-E584CD5DE809@cs.uchicago.edu" class=""></div></div><div class="" style="orphans: 2; widows: 2;"><div class="" style="margin: 0in 0in 0.0001pt;"><b class="" style="font-size: 14px;">Theodore Kim</b></div><div class="" style="margin: 0in 0in 0.0001pt;"><span class=""><span class=""><span class=""><i class=""><font size="2" class="">Pixar Animation Studios</font></i></span></span></span></div><div class="" style="margin: 0in 0in 0.0001pt;"><br class=""></div><div class="" style="margin: 0in 0in 0.0001pt;"><b class=""><font class="" style="font-size: 14px;"><br class=""></font></b></div><div class="" style="margin: 0in 0in 0.0001pt;"><span class="" style="font-size: 14px;"><b class=""><font class="">Thursday, April 5, 2018 at 3:30 pm <br class="">Ryerson 251</font></b><br class=""></span></div></div><div class="" style="orphans: 2; widows: 2;"><span class="" style="font-size: 14px;"><br class=""></span></div><div class=""><br class=""></div><div class=""><div class=""><b class="" style="color: rgb(33, 33, 33); font-family: Roboto, Helvetica, Arial, sans-serif; font-size: 14px;">Title: </b><font color="#212121" face="Roboto, Helvetica, Arial, sans-serif" class=""><span class="" style="font-size: 14px;">Non-Linear Optimization of Visual Phenomena</span></font></div><div class="" style="color: rgb(33, 33, 33); font-family: Roboto, Helvetica, Arial, sans-serif; font-size: 14px;"><b class=""><br class=""></b></div><div class="" style="color: rgb(33, 33, 33); font-family: Roboto, Helvetica, Arial, sans-serif; font-size: 14px;"><b class="">Abstract:</b></div><div class=""><font color="#212121" face="Roboto, Helvetica, Arial, sans-serif" class=""><span class=""><span class=""><span style="font-size: 14px;" class="">Non-linear optimization lies at the heart of many visual phenomena in computer graphics, including realistic muscles, flesh, fire, and water. However, when these problems are cast as energy minimizations, several questions must answered. Which energy yields the best visual result? Is the optimization efficient? Is the energy directable?<br class=""><br class="">In this talk, I will present our recent answers to these questions. First, we have found significant visual limitations in the elastic energies used to simulate flesh and muscle in movies and games. We propose an alternative energy that is simple, robust and visually superior. Next, we show that the eigenstructure of this energy can be understood in closed-form, which allows us to optimize arbitrary elasticity models both efficiently and concisely. Additionally, we examine a case where the eigenstructure of a fluid can also be written down in closed form, which allows us to generate previously unseen fluid motions.<br class=""><br class="">These results contribute to a better understanding of the underlying physical and geometric structures. Moreover, they point the way towards more sophisticated numerical methods, increasingly realistic physical models, and new visual phenomena.<br class=""><br class=""></span><span style="font-size: 14px;" class=""> </span><span style="font-size: 14px;" class=""><br class=""></span></span></span></font><b class="" style="color: rgb(33, 33, 33); font-family: Roboto, Helvetica, Arial, sans-serif; font-size: 14px;">Bio:</b></div><div class=""><span id="docs-internal-guid-8bdccc40-716c-e22d-6a5f-d3d1c5863489" class=""><div class="" style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><font color="#212529" class=""><span style="font-size: 14px; white-space: pre-wrap;" class=""><i class="">Theodore Kim is a Senior Research Scientist at Pixar Animation Studios, where he investigates biomechanical solids, fluid dynamics, and selected topics in geometry. Previously, he was an Associate Professor at the University of California, Santa Barbara, in Media Arts and Technology (MAT), and Computer Science (CS). He is the recipient of the NSF CAREER Award, multiple Best Paper awards, and a Scientific and Technical Academy Award (SciTech Oscar).</i></span></font></div><div class=""><span class="" style="font-size: 10pt; font-family: Arial; color: rgb(33, 37, 41); background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;"><br class=""></span></div><div class=""><span class="" style="font-size: 10pt; font-family: Arial; color: rgb(33, 37, 41); background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-position: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;"><br class=""></span></div></span></div><div class=""><div class="" style="color: rgb(33, 33, 33); font-family: Roboto, Helvetica, Arial, sans-serif; font-size: 14px;"><b class="">Host: Fred Chong</b></div><div class="" style="color: rgb(33, 33, 33); font-family: Roboto, Helvetica, Arial, sans-serif; font-size: 14px;"><br class=""></div><div class="" style="color: rgb(33, 33, 33); font-family: Roboto, Helvetica, Arial, sans-serif;"><i class=""><font size="2" class="">Refreshments served after the talk in Ry. 255</font></i></div><div class="" style="color: rgb(33, 33, 33); font-family: Roboto, Helvetica, Arial, sans-serif;"><i class=""><font size="2" class=""><br class=""></font></i></div><div class="" style="color: rgb(33, 33, 33); font-family: Roboto, Helvetica, Arial, sans-serif;"><i class=""><font size="2" class="">Link to PDF: </font></i><a href="https://www.cs.uchicago.edu/sites/cs/files/uploads/seminar_announcements/Kim poster.pdf" class="">https://www.cs.uchicago.edu/sites/cs/files/uploads/seminar_announcements/Kim%20poster.pdf</a></div></div></div></div></body></html>