Patricio Simari


"Computer Science is no more about computers than astronomy is about telescopes."

--E. W. Dijkstra

Dr. Simari is a computer scientist and an Assistant Professor in the Department of Electrical Engineering and Computer Science at The Catholic University of America.

His main research interests are in geometry processing and the computational understanding of shape with applications to computer graphics and vision, health, and robotics.

Contact

Publications

Peer-Reviewed Journal Articles

"Direct Path Superfacets: An Intermediate Representation for Motion Planning," Evis Plaku, Erion Plaku, Patricio Simari. IEEE Robotics and Automation Letters, January 2017, Volume 2, Issue 1, pages 350-357, ISSN 2377-3766 [url] [doi] [pdf] [videos]

“Deformation-Driven Topology-Varying 3D Shape Correspondence”, Ibraheem Alhashim, Kai Xu, Yixin Zhuang, Junjie Cao, Patricio Simari, Hao Zhang. ACM Transactions on Graphics, November 2015, Volume 34, Issue 6, pages 236:1--236:13. Presented at SIGGRAPH Asia 2015, November 2-5, 2015 Kobe, Japan. [url] [doi] [page] [pdf]

“Fast and Scalable Mesh Superfacets,” Patricio Simari, Giulia Picciau, Leila De Floriani. Presented at Pacific Graphics 2014 and published in special issue of Computer Graphics Forum, Volume 33, Number 7, pp. 181-190, October 2014 [url] [doi] [source code] [pdf]

“Generalized Extrinsic Distortion and Applications,” Patricio Simari, Leila De Floriani, Federico Iuricich, Mohammed Mostefa Mesmoudi. Presented at Shape Modeling International 2013, published in special issue of Elsevier Computers & Graphics, vol. 37, num. 6, pp. 582--588, October 2013, ISSN 0097-8493 [url] [doi] [pdf]

“Using overlap volume histogram and IMRT plan data to guide and automate VMAT planning: a head-and-neck case study,” Binbin Wu, Dalong Pang, Patricio Simari, Russell Taylor, Giuseppe Sanguineti, Todd McNutt. Medical Physics, Volume 40, Issue 2, January 2013, ISSN 0094-2405 [url] [doi]

“Sparse Zonal Harmonic Factorization for Efficient SH Rotation,” Derek Nowrouzezahrai, Patricio Simari, Eugene Fiume. ACM Transactions on Graphics, Volume 31, Issue 3, May 2012. Presented at ACM SIGGRAPH 2012 [url] [doi] [pdf]

“Consensus Meshing,” Ryan Schmidt and Patricio Simari. Shape Modeling International 2012, published in special issue of Elsevier Computers & Graphics, Volume 36, Issue 5, pp. 488--497, August 2012. ISSN: 0097-8493 [url] [doi] [page] [pdf]

“Fully Automated Simultaneous Integrated Boosted–Intensity Modulated Radiation Therapy Treatment Planning Is Feasible for Head-and-Neck Cancer: A Prospective Clinical Study,” Binbin Wu, Todd McNutt, Marianna Zahurak, Patricio Simari, Dalong Pang, Russell Taylor, Giuseppe Sanguineti. International Journal of Radiation Oncology*Biology*Physics, Volume 84, Number 5 , pp. e647-e653, December 2012 [url] [doi]

“A method for deriving a 4D-interpolated planning target volume for mobile tumors,” Teboh Roland, Russell Hales, Todd McNutt, John Wong, Patricio Simari, Erik Tryggestad. Medical Physics, 39, 195 (2012) [url] [doi]

“Increased organ sparing using shape-based treatment plan optimization for intensity modulated radiation therapy of pancreatic adenocarcinoma,” Steven F. Petit, Binbin Wu, Michael Kazhdan, André Dekker, Patricio Simari, Rachit Kumar, Russell Taylor, Joseph M. Herman, Todd McNutt. Radiotherapy & Oncology, 2012 Jan;102(1):38-44 [url] [doi]

“A data-driven approach to generating achievable DVH objectives in IMRT treatment planning,” Binbin Wu, Francesco Ricchetti, Giuseppe Sanguineti, Michael Kazhdan, Patricio Simari, Robert Jacques, Russell Taylor, Todd McNutt. International Journal of Radiation Oncology Biology Physics, Volume 79, Issue 4, Pages 1241-1247, 15 March 2011. [url] [doi]

“Patient Geometry-Driven Information Retrieval for IMRT Treatment Plan Quality Control,” Binbin Wu, Francesco Ricchetti, Giuseppe Sanguineti, Michael Kazhdan, Patricio Simari, Ming Chuang, Russell Taylor, Robert Jacques, Todd McNutt. Medical Physics, Volume 36, Issue 12, pp. 5497-5505, December 2009 [url] [doi] [pdf]

“Multi-objective shape segmentation and labeling,” Patricio Simari, Derek Nowrouzezahrai, Evangelos Kalogerakis, Karan Singh. Eurographics Symposium on Geometry Processing 2009, published in special issue of Wiley-Blackwell Computer Graphics Forum, Volume 28, Number 5, July 2009, pp. 1415-1425 (11), Blackwell Publishing [url] [doi] [pdf]

“Extracting lines of curvature from noisy point clouds,” Evangelos Kalogerakis, Derek Nowrouzezahrai, Patricio Simari, Karan Singh. Elsevier Journal of Computer-Aided Design, Special Issue on Point-Based Computational Techniques, Volume 41, Number 4 (April 2009), pp. 282-292 [url] [doi] [page] [pdf]

“Data-driven curvature for real-time line drawing of dynamic scenes,” Evangelos Kalogerakis, Derek Nowrouzezahrai, Patricio Simari, James McCrae, Aaron Hertzmann, Karan Singh. ACM Transactions on Graphics, Volume 28, Issue 1, January 2009. Presented at ACM SIGGRAPH 2010 [url] [doi] [page] [video] [pdf]

“Revisions of Informant Plausibility in Multiagent Systems,” Patricio D. Simari, Marcelo A. Falappa. Journal of Computer Science and Technology (Argentine Journal in Computer Science), Volume 2, Number 5: 16-29, 2001, ISSN 1666-6038 [pdf]

Articles in Peer-Reviewed Computer Science Conference Proceedings

“Supertetras: A Superpixel Analog for Tetrahedral Mesh Segmentation”, Giulia Picciau, Patricio Simari, Federico Iuricich, and Leila De Floriani. International Conference on Image Analysis and Processing (ICIAP) 2015, 7-11 September 2015, Genoa, Italy; acceptance rate: 55%; peer-reviewed and published in Lecture Notes in Computer Science, Volume 9279 (September 2015), pp 375-386, ISBN: 978-3-319-23230-0 (Print) 978-3-319-23231-7 (Online) [url] [doi] [source code] [pdf]

“Hierarchical Mesh Segmentation Editing through Rotation Operations”, Federico Iuricich and Patricio Simari. International Conference on Image Analysis and Processing (ICIAP) 2015, 7-11 September 2015, Genoa, Italy; acceptance rate: 55%; peer-reviewed and published in Lecture Notes in Computer Science, Volume 9279 (September 2015), pp 398-409, ISBN: 978-3-319-23230-0 (Print) 978-3-319-23231-7 (Online) [url] [doi] [pdf]

“Spectral Global Intrinsic Symmetry Invariant Functions”, Hui Wang, Patricio Simari, Zhixun Su, Hao Zhang. Graphics Interface (GI) 2014, 7-9 May 2014, Montreal, Quebec, Canada; acceptance rate 39%; peer-reviewed and published in the Proceedings of Graphics Interface 2014 by the Canadian Information Processing Society, Toronto, Ontario, Canada, pp. 209-215, ISBN 978-1-4822-6003-8 [url] [page] [pdf]

“Discrete Morse versus watershed decompositions of tessellated manifolds,” Leila De Floriani, Federico Iuricich, Paola Magillo, Patricio Simari. International Conference on Image Analysis and Processing (ICIAP) 2013; acceptance rate 45.76%; peer-reviewed and published in Lecture Notes in Computer Science, Volume 8157 (September 2013), pp 339-348, ISSN 0302-9743 [doi] [url] [pdf]

“A Statistical Approach for Achievable Dose Querying in IMRT Planning,” Patricio Simari, Binbin Wu, Robert Jacques, Alex King, Todd McNutt, Russell Taylor, Michael Kazhdan. Medical Image Computing and Computer Assisted Intervention (MICCAI) 2010, published in Lecture Notes in Computer Science, Volume 6362/2010 (September 2010), pp 521-528 [url] [doi] [pdf]

“A Geometry-driven Approach for Predicating DVHs of Organs at Risk in IMRT Planning,” Binbin Wu, Michael Kazhdan, Patricio Simari, Russell Taylor, Todd McNutt. International Conference on the use of Computers in Radiation Therapy 2010. Accepted as oral presentation. [pdf]

“A Shape Relationship Descriptor for Radiation Therapy Planning,” Michael Kazhdan, Patricio Simari, Todd McNutt, Binbin Wu, Robert Jacques, Ming Chuang, Russell Taylor. Medical Image Computing and Computer Assisted Intervention (MICCAI) 2009, published Lecture Notes in Computer Science, Volume 5762/2009 (September 2009), pp 100-108 [url] [doi] [pdf]

“Shadowed Relighting of Dynamic Geometry with 1D BRDFs,” Derek Nowrouzezahrai, Evangelos Kalogerakis, Patricio Simari, Eugene Fiume. Eurographics Short Papers 2008 [url] [doi] [page] [video] [pdf]

“Compact and Efficient Generation of Radiance Transfer for Dynamically Articulated Characters,” Derek Nowrouzezahrai, Patricio Simari, Evangelos Kalogerakis, Karan Singh, Eugene Fiume. Graphite 2007 [url] [doi] [page] [pdf] [slides]

“Eigentransport for Efficient and Accurate All-Frequency Relighting,” Derek Nowrouzezahrai, Patricio Simari, Evangelos Kalogerakis, Eugene Fiume. Graphite 2007 [url] [doi] [page] [pdf] [slides]

“Robust statistical estimation of curvature on discretized surfaces,” Evangelos Kalogerakis, Patricio Simari, Derek Nowrouzezahrai, Karan Singh. Eurographics Symposium on Geometry Processing 2007 [url] [page] [pdf]

“Folding Meshes: Hierarchical mesh segmentation based on planar symmetry,” Patricio Simari, Evangelos Kalogerakis, Karan Singh. Eurographics Symposium on Geometry Processing, 2006. [url] [pdf]

“Extraction and remeshing of ellipsoidal representations from mesh data,” Patricio D. Simari, Karan Singh. Graphics Interface, 2005 [url] [pdf]

“Consolidation of Plausibility Relations in Multi-Agents Systems,” Marcelo A. Falappa, Patricio D. Simari. Argentine Conference in Computer Science (CACIC) 2001 [pdf]

“Revisions of Orders in Dynamic Systems,” Marcelo A. Falappa, Patricio D. Simari. Argentine Workshop in Computer Science (WICC) 2001 [url] [pdf]

“Revision of Plausibility Relations in Dynamic Systems,” Patricio D. Simari, Marcelo A. Falappa. Argentine Conference in Computer Science (CACIC) 2000 [pdf]