Bob O'Bara

Bob O'Bara

Assistant Director of Scientific Computing

Bob O’Bara joined the Kitware team in August 2006 as an R&D Engineer. His main areas of interest are geometric modeling, mesh generation, model and mesh visualization, and general scientific visualization techniques. Since he started working at Kitware, Bob has been involved in the areas of Information Visualization as well as improving the processing of SpyPlot files. For the past year and a half, Bob has been working with the Oil & Gas Industry in the development of visualization/information management components for subsurface data from various sources and disciplines (Geo-Sciences & Engineering). Recently, Bob is also involved with the Army Core of Engineers in developing an integrated visualization environment for hydrologic modeling which includes large multi-dimensional simulations of watersheds, rivers, reservoirs, estuaries, and oceans.

Bob received his Bachelors of Science in Electrical Engineering and Applied Physics from Case Western Reserve University in May 1985. He completed his Masters of Engineering from Rensselaer Polytechnic Institute in May 1988 with a thesis analyzing the modeling clip mechanism proposed in the PHIGS+ standard.

Prior to joining Kitware, Bob was a senior software engineer at Simmetrix Inc. where he was project manager of the GeomSim product. His other responsibilities included developing an attribute management system for representing non-geometric information necessary for simulation-based design, an attribute definition system that provided the ability to define complex attribute representations, as well as various meshing and geometric modeling algorithms including void filling and curvilinear mesh generation techniques. He also developed a visualization infrastructure for displaying geometric information as well as creating and editing attribute information. Bob was also the principle investigator for the following SBIRs:

Mesh Generation for High-Order Finite Element Methods — NSF Phase I, II, and IIB. (2001-2005)

The purpose of this project was to develop innovative automatic mesh generation capabilities as needed to apply high-order finite element methods in the solution of partial differential equations over general curvilinear domains.

Generation and Adaptive Control of Grids for High-Speed Reacting Flows — Air Force Phase1 (2005)

This Phase I SBIR project focused on extending Simmetrix’ automatic mesh generation tools to generate meshes necessary for types of high-speed reacting flow simulations being investigated by the Air Force. This included creating anisotropic mixed element meshes with boundary layers.

  1. X. Luo, M. Shephard, L. Ying, R. O'Bara, R. Nastasia, and M. Beall, "Construction of near optimal meshes for 3-d curved domains with thin sections and singularities for p-version method," Jan. 2006.
  2. M. Shephard, J. Flaherty, K. Janson, X. Li, X. Luo, N. Chevaugeon, J. Remacle, M. Beall, and R. O'Bara, "Adaptive mesh generation for curved domains," vol. 52, p. 251–271, Jan. 2005.
  3. M. Shephard, M. Beall, R. O'Bara, and B. Webster, "Towards simulation-based design," vol. 40, p. 1575–1598, Jan. 2004.
  4. X. Luo, M. Shephard, R. O'Bara, R. Nastasia, and M. Beall, "Automatic p-version mesh generation for curved domains," vol. 20, no. 3, p. 265–285, Jan. 2004.
  5. R. O'Bara et al., "Attribute management system for engineering analysis," vol. 18, no. 4, p. 339–351, Jan. 2002.
  6. X. Luo, M. Shephard, J. Remacle, R. O'Bara, M. Beall, B. Szabo, and R. Actis, "P-version mesh generation issues," p. 343–354, Jan. 2002.
  7. S. Dey, R. O'Bara, and M. Shephard, "Towards curvilinear meshing in 3d: the case of quadratic simplices," vol. 33, no. 3, p. 199–209, Jan. 2001.
  8. S. Dey, R. O'Bara, and M. Shephard, "Curvilinear mesh generation in 3d," p. 407–417, Jan. 1999.
  9. M. Shephard, H. d. Cougny, R. O'Bara, and M. Beall, "Automatic grid generation using spatially-based trees," Jan. 1998.
  10. M. Shephard, M. Beall, and R. O'Bara, "Revisiting the elimination of the adverse effects of small model features in automatically generated meshes," p. 119–131, Jan. 1998.
  11. R. Spilker, M. Shephard, J. Flaherty, P. Donzelli, W. Dunbar, R. O'Bara, V. Mow, and G. Ateshian, "3d analysis of biphasic layers using physiological data," p. 64–, Jan. 1997.
  12. R. Spilker, M. Shephard, P. Donzelli, W. Dunbar, R. Michalowski, R. O'Bara, V. Mow, and G. Ateshian, "Computational tools for the 3d analysis of diarthrodial joint soft tissue mechanics using physiological data," Jan. 1997.
  13. R. O'Bara et al., "Specifying analysis information within a geometric framework," p. 137–, Jan. 1997.
  14. R. O’Bara et al., "Generation of geometric models and meshes for analysis of soft tissues in articulated joints," p. 65–, Jan. 1997.
  15. S. Dey, R. O'Bara, and M. Shephard, "Curving straight-edged meshes for p-version finite element method," p. 188–, Jan. 1997.
  16. R. O'Bara et al., "Analysis model visualization and graphical analysis attribute specification system," vol. 19, no. 4, p. 325–348, Jan. 1995.
  17. M. Roubik and R. O'Bara, "Phigs interactor phigs examiner (pipe)," Mar. 1993.
  18. J. Miller, D. Breen, W. Lorensen, R. O'Bara, and M. Wozny, "Geometrically deformed models: a method for extracting closed geometric models from volume data," vol. 25, no. 4, p. 217–226, Jul. 1991.
  19. R. O'Bara, "Graphics standards and interfaces," p. 1–11, Oct. 1991.
  20. R. O'Bara and S. Abi-Ezzi, "An analysis of modeling clip," Jan. 1989.
  21. M. Skolnick, S. Kim, and R. O'Bara, "Morphological algorithms for computing non-planar point neighborhoods on cellular automata,," p. 106–111, Dec. 1988.
  22. R. O'Bara, "An analysis of modeling clip," Jan. 1988.
  23. R. O'Bara and S. Abi-Ezzi, "Rendering extensions to graphigs," vol. Tr-88011, May 1988.