Research

Refereed Publications

  1. Jonghyun Kim, Youngmo Jeong, Michael Stengel, Kaan Aksit, Rachel Albert, Ward Lopes, Trey Greer, Ben Boudaoud, Alexander Majercik, Josef Spjut, Morgan McGuire, David Luebke; Foveated AR: Dynamically-Foveated Augmented Reality Display, ACM SIGGRAPH Proceedings, Los Angeles, July, 2019. (to appear) paper Bibtex
  2. Mona Jalal, Josef Spjut, Ben Boudaoud, Margrit Betke; SIDOD: A Synthetic Image Dataset for 3D Object Pose Recognition with Distractors, Women in Computer Vision Workshop, Long Beach, June 16, 2019. (to appear) paper alternate Bibtex
  3. Jose Barreiros, Houston Claure, Bryan Peele, Omer Shapira, Josef Spjut, David Luebke, Malte Jung, Robert Shepherd; Fluidic Elastomer Actuators for Haptic Interactions in Virtual Reality, IEEE Robotics and Automation Letters (RA-L), None, February, 2019. paper Bibtex
  4. Adam Marrs, Josef Spjut, Holger Gruen, Rahul Sathe, Morgan McGuire; Adaptive Temporal Antialiasing, High-Performance Graphics (HPG 2018), Vancouver, August 10-12, 2018. paper alternate Bibtex
  5. Konstantin Shkurko, Tim Grant, Erik Brunvand, Daniel Kopta, Josef Spjut, Elena Vasiou, Ian Mallett, Cem Yuksel; SimTrax: Simulation Infrastructure for Exploring Thousands of Cores, ACM Great Lakes Symposium on VLSI, May 23-25, 2018. paper Bibtex
  6. Benjamin Mac Murray, Bryan Peele, Patricia Xu, Josef Spjut, Omer Shapira, David Luebke, Robert Shepherd; A Variable Shape and Variable Stiffness Controller for Haptic Virtual Interactions, IEEE International Conference on Soft Robotics, April 24-28, 2018. paper alternate Bibtex
  7. Trey Greer, Josef Spjut, David Luebke, Turner Whitted; Hybrid Modulation for Near Zero Display Latency, Society of Information Display, May 24-27, 2016. paper alternate Bibtex
  8. Daniel Kopta, Konstantin Shkurko, Josef Spjut, Erik Brunvand, Al Davis; Memory Considerations for Low Energy Ray Tracing, Computer Graphics Forum, August 7, 2014. paper Bibtex
  9. Daniel Kopta, Konstantin Shkurko, Josef Spjut, Erik Brunvand, Al Davis; An Energy and Bandwidth Efficient Ray Tracing Architecture, High-Performance Graphics (HPG 2013), Anaheim, July 10-21, 2013. paper Bibtex
  10. Daniel Kopta, Thiago Ize, Josef Spjut, Erik Brunvand, Al Davis, Andrew Kensler; Fast, Effective BVH Updates for Animated Scenes, ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games (I3D 2012), Irvine, March, 2012. paper Bibtex
  11. Josef Spjut, Daniel Kopta, Erik Brunvand, Al Davis; A Mobile Accelerator Architecture for Ray Tracing, 3rd Workshop on SoCs, Heterogeneous Architectures and Workloads (SHAW-3), New Orleans, February, 2012. paper slides Bibtex
  12. Daniel Kopta, Josef Spjut, Al Davis, Erik Brunvand; Efficient MIMD Architectures for High-Performance Ray Tracing, IEEE International Conference on Computer Design (ICCD 2010), Amsterdam, October, 2010. paper Bibtex
  13. Seth Pugsley, Josef Spjut, David Nellans, Rajeev Balasubramonian; SWEL: Hardware Cache Coherence Protocols to Map Shared Data onto Shared Caches, 19th International Conference on Parallel Architectures and Compilation Techniques (PACT-19), Vienna, September, 2010. paper Bibtex
  14. Josef Spjut, Andrew Kensler, Daniel Kopta, Erik Brunvand; TRaX: A Multicore Architecture for Real-Time Ray Tracing, IEEE Transactions on Computer Aided Design of Integrated Circuits and Systems (TCAD), December, 2009. paper Bibtex
  15. Josef Spjut, Andrew Kensler, Erik Brunvand; Hardware-accelerated gradient noise for graphics, Proceedings of the 19th ACM Great Lakes Symposium on VLSI (GLSVLSI'09), Boston, May 10-12, 2009. paper Bibtex
  16. Niladrish Chatterjee, Seth Pugsley, Josef Spjut, Rajeev Balasubramonian; Optimizing a Multi-Core Processor for Message-Passing Workloads, 5th Workshop on Unique Chips and Systems (UCAS-5), Boston, April, 2009. paper Bibtex
  17. Josef Spjut, Solomon Boulos, Daniel Kopta, Erik Brunvand, Spencer Kellis; TRaX: A Multi-Threaded Architecture for Real-Time Ray Tracing, Symposium on Application Specific Processors (SASP), Anaheim, June 8-9, 2008.(Best paper award) paper Bibtex

Book Chapter

  1. Rahul Sathe, Holger Gruen, Adam Marrs, Josef Spjut, Morgan McGuire, Yury Uralsky; Adaptive Anti-Aliasing using Conservative Rasterization and GPU Ray Tracing, GPU Zen 2, April, 2019. paper Bibtex
  2. Adam Marrs, Josef Spjut, Holger Gruen, Rahul Sathe, Morgan McGuire; Improving Temporal Antialiasing with Adaptive Ray Tracing, Ray Tracing Gems, March, 2019. paper alternate alternate 2 Bibtex

Technical Demos

  1. Jonghyun Kim, Michael Stengel, Jui-Yi Wu, Ben Boudaoud, Josef Spjut, Kaan Aksit, Rachel Albert, Trey Greer, Youngmo Jeong, Ward Lopes, Alexander Majercik, Peter Shirley, Morgan McGuire, David Luebke; Matching Visual Acuity & Prescription: Towards AR for Humans, SIGGRAPH Emerging Technologies, Los Angeles, July 28 - August 1, 2019. (to appear) paper Bibtex
  2. Kishore Rathinavel, Praneeth Chakravarthula, Kaan Aksit, Josef Spjut, Ben Boudaoud, Turner Whitted, David Luebke, Henry Fuchs; Steerable Application-Adaptive Near-Eye Displays, SIGGRAPH Emerging Technologies, Vancouver, August 12 - 16, 2018.(Best in show award) paper Bibtex
  3. Kaan Aksit, Ward Lopes, Jonghyun Kim, Josef Spjut, Anjul Patney, Peter Shirley, David Luebke, Steven A. Cholewiak, Pratul Srinivasan, Ren Ng, Martin S. Banks, Gordon D. Love; Varifocal Virtuality: A Novel Optical Layout for Near-Eye Display, SIGGRAPH Emerging Technologies, Los Angeles, July 30 - August 3, 2017. paper alternate slides Bibtex
  4. Robert Shepherd, Bryan Peele, Benjamin Mac Murray, Jose Barreiros, Omer Shapira, Josef Spjut, David Luebke; Stretchable Transducers for Kinesthetic Interactions in Virtual Reality, SIGGRAPH Emerging Technologies, Los Angeles, July 30 - August 3, 2017. paper alternate Bibtex
  5. Bryan Peele, Benjamin Mac Murray, Jose Barreiros, Robert Shepherd, Omer Shapira, Josef Spjut, David Luebke; Stretchable Transducers for Haptic Interactions in Virtual and Augmented Reality, GPU Technology Conference VR Village, San Jose, May 9 - 11, 2017. Bibtex

Conference Talks and Courses

  1. Josef Spjut, Ben Boudaoud; Foveated Displays: Toward Classification of the Emerging Field, SIGGRAPH Talk, Los Angeles, July 28-31, 2019. (to appear) paper Bibtex
  2. Josef Spjut; The Augmented Frontier: Challenges for Near Eye Display Computing, [AR In Action](http://arinaction.org/), Boston, January 16-17, 2018. paper Bibtex
  3. Bryan Peele, Benjamin Mac Murray, Robert Shepherd, Jose Barreiros, Omer Shapira, Josef Spjut, David Luebke; Stretchable Transducers for Kinesthetic Interactions in Virtual Reality, SIGGRAPH Experience Presentations, Los Angeles, August 3, 2017. paper alternate Bibtex
  4. Josef Spjut, Richard Piersall, Kirklann Lau; Build your own game controller, SIGGRAPH Studio, Los Angeles, August 10, 2015.(Studio Course) slides webpage Bibtex

Dissertation

  1. Josef Spjut; Efficient Ray Tracing Architectures, University of Utah Dissertation, 2015. paper alternate alternate 2 Bibtex

Technical Reports

  1. Konstantin Shkurko, Tim Grant, Erik Brunvand, Daniel Kopta, Josef Spjut, Elena Vasiou, Ian Mallett, Cem Yuksel; SimTrax: Simulation Infrastructure for Exploring Thousands of Cores, Tech Report, March 29, 2018. paper Bibtex
  2. Chris Larson, Josef Spjut, Ross Knepper, Robert Shepherd; OrbTouch: Recognizing Human Touch in Deformable Interfaces with Deep Neural Networks, Tech Report, arXiv:1706.02542, June, 2017. paper Bibtex
  3. Jean Sung, Sebastian Krupa, Andrew Fishberg, Josef Spjut; An Approach to Data Prefetching Using 2-Dimensional Selection Criteria, Tech Report, arXiv:1505.03899, May, 2015. paper Bibtex
  4. Dong-hyeon Park, Akhil Bagaria, Fabiha Hannan, Eric Storm, Josef Spjut; Sphynx: A Shared Instruction Cache Exporatory Study, Tech Report, arXiv:1412.1140, December 3, 2014. paper Bibtex
  5. Eric Storm, Josef Spjut; A Time-to-Recache Case Study, Tech Report, March, 2014. paper Bibtex
  6. Andrew Carter, Max Korbel, Paula Ning, Josef Spjut; Qualitative Cache Performance Analysis, Tech Report, September, 2013. paper Bibtex
  7. Josef Spjut, Seth Pugsley; Time to Recache: Measuring Memory Miss Behavior, Tech Report, September, 2011. paper Bibtex
  8. Daniel Kopta, Andrew Kensler, Thiago Ize, Josef Spjut, Erik Brunvand, Al Davis; Fast, Effective BVH Updates for Dynamic Ray-Traced Scenes Using Tree Rotations, Tech Report, UUCS 11-002, University of Utah, July, 2011. paper Bibtex

Refereed Posters

  1. Joohwan Kim, Josef Spjut, Morgan McGuire, Alexander Majercik, Ben Boudaoud, Rachel Albert, David Luebke; Esports Arms Race: Latency and Refresh Rate for Competitive Gaming Tasks, Vision Science Society, St. Pete Beach, May 17-22, 2019. (to appear) paper Bibtex
  2. Mona Jalal, Josef Spjut, Ben Boudaoud, Margrit Betke; Large-scale Synthetic Domain Randomized 6DoF Object Pose Estimation Dataset, New England Computer Vision Workshop, Boston, November 26, 2018. paper Bibtex
  3. Daniel Kopta, Josef Spjut, Erik Brunvand; Grid-Based Ray Tracing for a Parallel Computing Architecture, High Performance Graphics (HPG'09), New Orleans, August 1-3, 2009. paper Bibtex
  4. Daniel Kopta, Josef Spjut, Erik Brunvand, Steven Parker; Comparing Incoherent Ray Performance of TRaX vs. Manta, IEEE Symposium on Interactive Ray Tracing (RT08), August 9-10, 2008. paper alternate Bibtex

HMC Clinic Projects

At Harvey Mudd College I advised a few clinic projects with junior and senior level students paid for by companies. The following is a list of those projects and the people involved. Those before my name are students, after are liaisons from the company.

  • Fabiha Hannan, Cyrus Huang, Sebastian Krupa, Guillaume Legrain, Minh Triet Nguyen, Maggie Rabasca, Zachary Vickland, Tiancheng Yang, Josef Spjut, Philip Cheung, John McNeil, Jef Vivian. Design and Implementation of a Memory Testing Apparatus, Clinic Report for Dart Neuroscience, Harvey Mudd College, 116 pages, May 2015.
  • Olivier Cheng, Stephen Ibanez, Amy Ngai, Joshua Sanz, Avi Thaker, Josef Spjut, Alon Regev; Computer Network Testing, Clinic Report for Ixia, Harvey Mudd College, 48 pages, May 2015.
  • Antoine Billig, Chanel Chang, Austin Chen, Obosa Obazuaye, Jeffrey Steele, Sean Velazquez, Josef Spjut, Pradeep Batra, Adrian Torres, Julia Cline; USB 3.0 to Multi-Protocol Interface Adapter, Clinic Report for Rambus Incorporate, Harvey Mudd College, 183 pages, May 2014.
  • Dylan Stow, Carl Pearson, Jeffrey Steele, Shreyasha Paudel, Adam Parower, Gurchetan Singh, Dong-hyeon Park, Josef Spjut, Warren Furguson; Multiplicative Based Division, Clinic Report for Intel Corp, Harvey Mudd College, 117 pages, May 2013.
  • Allison Card, Kacyn Fujii, Hannah Kastein, Paula Ning, Matthew Tambara, Stephanie Fawaz, Josef Spjut, Sourabh Ravindran, Nitish Murthy, Immersive Audio Game Development Kit Clinic Report for Texas Instruments, Harvey Mudd College, 110 pages, May 2013.

People

I've been fortunate to work with a large number of talented people. The ones I've worked with on research are listed below. Email me if you think you should be on this list and you aren't.

Past Research Students

Eric Storm '15, Ivan Wong '15, Skyler Williams '16, Ramy Elminyawi '16, Amy Ngai '16, Richard Piersall '16, Kirklann Lau '16, Andrew Fishberg '16, Da Eun Shim '16, Fabiha Hannan '16, Paul Jolly '16, Dong-hyeon Park '14, Sami Mourad '14, Akhil Bagaria '16, Andrew Carter '13, Paula Ning '13, Max Korbel '13, Katherine Yang '15

Current and Recent Collaborators

Adam Marrs, Andrew Fishberg, Anjul Patney, Ben Boudaoud, Benjamin Mac Murray, Bob Alfieri, Bryan Peele, Cem Yuksel, Chris Larson, Daniel Kopta, David Luebke, Elena Vasiou, Erik Brunvand, Gordon D. Love, Henry Fuchs, Holger Gruen, Ian Mallett, Jean Sung, Jonghyun Kim, Jose Barreiros, Kaan Aksit, Kirklann Lau, Kishore Rathinavel, Konstantin Shkurko, Margrit Betke, Martin S. Banks, Mona Jalal, Morgan McGuire, Niveditha Kalavakonda, Omer Shapira, Patricia Xu, Peter Shirley, Praneeth Chakravarthula, Pratul Srinivasan, Rahul Sathe, Ren Ng, Richard Piersall, Robert Shepherd, Ross Knepper, Samuli Laine, Sebastian Krupa, Steven A. Cholewiak, Tero Karras, Tim Grant, Timo Aila, Trey Greer, Turner Whitted, Ward Lopes

Past Collaborators

Akhil Bagaria, Al Davis, Andrew Carter, Andrew Kensler, David Nellans, David Sheldon, Dong-hyeon Park, Eric Storm, Fabiha Hannan, Frank Vahid, Max Korbel, Mike Parker, Niladrish Chatterjee, Paula Ning, Rajeev Balasubramonian, Roman Lysecky, Scott Sirowy, Seth Pugsley, Solomon Boulos, Spencer Kellis, Steven Parker, Thiago Ize

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