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2026 ​

Test Example
BibTeX — thanks for citing our work! 
@article{tomadakistest,
  author = {Michael Tomadakis and Rebecca Borissova and Yuxuan Zhang and S. J. Koppal},
  title = {Test Example},
  url = {/research/2025/nerf-relocalization/},
}

Michael Tomadakis, Rebecca Borissova, Yuxuan Zhang, S. J. Koppal, 
PDF | HTML | WACV 2026

Augmenting with NeRFs: Fast Relocalization on Densified Datasets
BibTeX — thanks for citing our work! 
@inproceedings{tomadakisaugmenting,
  author = {Michael Tomadakis and Rebecca Borissova and Yuxuan Zhang and S. J. Koppal},
  title = {Augmenting with NeRFs: Fast Relocalization on Densified Datasets},
  booktitle = {WACV 2026},
  url = {/research/2025/nerf-relocalization/},
}

Michael Tomadakis, Rebecca Borissova, Yuxuan Zhang, S. J. Koppal, 
PDF | WACV 2026

Towards a non-Fourier event-based opto-electronic convolution accelerator
BibTeX — thanks for citing our work! 
@article{kirklandtowards,
  author = {Hannah Kirkland and Trung H. Le and Piper Taylor and Mehran Keivanimehr and Isaac J. Sledge and S. J. Koppal},
  title = {Towards a non-Fourier event-based opto-electronic convolution accelerator},
  url = {/research/2026/incoherent-optical-computing/},
}

Hannah Kirkland, Trung H. Le, Piper Taylor, Mehran Keivanimehr, Isaac J. Sledge, S. J. Koppal, 
PDF | Optics Express 2026

Event Camera Depth Estimation from Epipolar Plane Images
BibTeX — thanks for citing our work! 
@inproceedings{regoevent,
  author = {Joshua D. Rego and S. J. Koppal and Suren Jayasuriya},
  title = {Event Camera Depth Estimation from Epipolar Plane Images},
  booktitle = {ICASPP 2026},
}

Joshua D. Rego, S. J. Koppal, Suren Jayasuriya, 
PDF | ICASPP 2026

RD-GuideNet: A Depth-Guided Framework for Robust Detection, Segmentation, and Temporal Tracking of White Button Mushrooms
BibTeX — thanks for citing our work! 
@article{duttrdguidenet,
  author = {Namrata Dutt and Daeun Choi and Yiannis Ampatzidis and Won Suk Lee and S. J. Koppal and Xu Wang},
  title = {RD-GuideNet: A Depth-Guided Framework for Robust Detection, Segmentation, and Temporal Tracking of White Button Mushrooms},
}

Namrata Dutt, Daeun Choi, Yiannis Ampatzidis, Won Suk Lee, S. J. Koppal, Xu Wang, 
PDF | Sensors 2026

2025 ​

Fabrication and Characterization of Individually Addressable Electrowetting Microprism Arrays
BibTeX — thanks for citing our work! 
@article{ranafabrication,
  author = {Mahima Rana and Samuel D. Gilinsky and Eduardo J. Miscles and Darwin Quiroz and Mo Zohrabi and Alexander Hedrick and Kaushik Jayaram and S. J. Koppal and Juliet T. Gopinath and Victor M. Bright},
  title = {Fabrication and Characterization of Individually Addressable Electrowetting Microprism Arrays},
}

Mahima Rana, Samuel D. Gilinsky, Eduardo J. Miscles, Darwin Quiroz, Mo Zohrabi, Alexander Hedrick, Kaushik Jayaram, S. J. Koppal, Juliet T. Gopinath, Victor M. Bright, 
Frontiers in Optics + Laser Science 2025

AI-Driven Framework for Generalized Optical Inspection of Printed Circuit Board Interconnects
BibTeX — thanks for citing our work! 
@article{craigaidriven,
  author = {P Craig and J Pearson and S Ghosh and N Varshney and S. J. Koppal and N Asadizanjani},
  title = {AI-Driven Framework for Generalized Optical Inspection of Printed Circuit Board Interconnects},
}

P Craig, J Pearson, S Ghosh, N Varshney, S. J. Koppal, N Asadizanjani, 
Journal Link | Journal of Failure Analysis and Prevention, 2025

Physics-Informed Neural Networks for SAM Image Enhancement with a Novel Physics-Constrained Metric for Advanced Semiconductor Packaging Inspection
BibTeX — thanks for citing our work! 
@inproceedings{ghoshphysicsinformed,
  author = {Shajib Ghosh and Nitin Varshney and Antika Roy and Patrick Craig and Md Mahfuz Al Hasan and Rayhane Ghane-Motlagh and Nelly Elsayed and S. J. Koppal and Navid Asadizanjani},
  title = {Physics-Informed Neural Networks for SAM Image Enhancement with a Novel Physics-Constrained Metric for Advanced Semiconductor Packaging Inspection},
  booktitle = {2025 IEEE 75th Electronic Components and Technology Conference (ECTC)},
}

Shajib Ghosh, Nitin Varshney, Antika Roy, Patrick Craig, Md Mahfuz Al Hasan, Rayhane Ghane-Motlagh, Nelly Elsayed, S. J. Koppal, Navid Asadizanjani, 
IEEE Xplore | 2025 IEEE 75th Electronic Components and Technology Conference (ECTC)

Robotic Monitoring of Colorimetric Leaf Sensors for Precision Agriculture
BibTeX — thanks for citing our work! 
@misc{hopkinsrobotic,
  author = {Malakhi Hopkins and Alice Kate Li and Shobhita Kramadhati and Jackson Arnold and Akhila Mallavarapu and Chavez Lawrence and Varun Murali and S. J. Koppal and Cherie R Kagan and Vijay Kumar},
  title = {Robotic Monitoring of Colorimetric Leaf Sensors for Precision Agriculture},
  howpublished = {ArXiv 2025},
}

Malakhi Hopkins, Alice Kate Li, Shobhita Kramadhati, Jackson Arnold, Akhila Mallavarapu, Chavez Lawrence, Varun Murali, S. J. Koppal, Cherie R Kagan, Vijay Kumar, 
Arxiv | ArXiv 2025

Active Optics for Hyperspectral Imaging of Reflective Agricultural Leaf Sensors
BibTeX — thanks for citing our work! 
@misc{burnsactive,
  author = {Dexter Burns and S. J. Koppal},
  title = {Active Optics for Hyperspectral Imaging of Reflective Agricultural Leaf Sensors},
  howpublished = {ArXiv 2025},
}

Dexter Burns, S. J. Koppal, 
Arxiv | ArXiv 2025

2024 ​

Design of an Adaptive Lightweight LiDAR to Decouple Robot-Camera Geometry
BibTeX — thanks for citing our work! 
@article{chendesign,
  author = {Yuyang Chen and Dingkang Wang and Lenworth Thomas and Karthik Dantu and S. J. Koppal},
  title = {Design of an Adaptive Lightweight LiDAR to Decouple Robot-Camera Geometry},
  url = {/research/2024/lightweight-lidar/},
}

Yuyang Chen, Dingkang Wang, Lenworth Thomas, Karthik Dantu, S. J. Koppal, 
PDF | IEEE Transactions on Robotics 2024

FoveaSPAD: Exploiting Depth Priors for Adaptive and Efficient Single-Photon 3D Imaging
BibTeX — thanks for citing our work! 
@article{foldenfoveaspad,
  author = {Justin Folden and Atul Ingle and S. J. Koppal},
  title = {FoveaSPAD: Exploiting Depth Priors for Adaptive and Efficient Single-Photon 3D Imaging},
  url = {/research/2024/foveaspad/},
}

Justin Folden, Atul Ingle, S. J. Koppal, 
PDF | Transactions on Computational Imaging 2024

FoveaCam++: Systems-Level Advances for Long Range Multi-Object High-Resolution Tracking
BibTeX — thanks for citing our work! 
@inproceedings{zhangfoveacam,
  author = {Yuxuan Zhang and S. J. Koppal},
  title = {FoveaCam++: Systems-Level Advances for Long Range Multi-Object High-Resolution Tracking},
  booktitle = {IROS 2024},
  url = {/research/2024/foveacam-plus/},
}

Yuxuan Zhang, S. J. Koppal, 
PDF | Poster | Video | IROS 2024

HyperPRI: A dataset of hyperspectral images for underground plant root study
BibTeX — thanks for citing our work! 
@article{changhyperpri,
  author = {Spencer J. Chang and Ritesh Chowdhry and Yangyang Song and Tomas Mejia and Anna Hampton and Shelby Kucharski and T.M. Sazzad and Yuxuan Zhang and S. J. Koppal and Chris H. Wilson and Stefan Gerber and Barry Tillman and Marcio F.R. Resende and William M. Hammond and Alina Zare},
  title = {HyperPRI: A dataset of hyperspectral images for underground plant root study},
}

Spencer J. Chang, Ritesh Chowdhry, Yangyang Song, Tomas Mejia, Anna Hampton, Shelby Kucharski, T.M. Sazzad, Yuxuan Zhang, S. J. Koppal, Chris H. Wilson, Stefan Gerber, Barry Tillman, Marcio F.R. Resende, William M. Hammond, Alina Zare, 
PDF | Computers and Electronics in Agriculture

SpectralZoom: Efficient Segmentation with an Adaptive Hyperspectral Camera
BibTeX — thanks for citing our work! 
@misc{arnoldspectralzoom,
  author = {Jackson Arnold and Sophia Rossi and Chloe Petrosino and Ethan Mitchell and S. J. Koppal},
  title = {SpectralZoom: Efficient Segmentation with an Adaptive Hyperspectral Camera},
  howpublished = {arXiv},
}

Jackson Arnold, Sophia Rossi, Chloe Petrosino, Ethan Mitchell, S. J. Koppal, 
PDF | arXiv

Cost-efficient Active Illumination Camera For Hyper-spectral Reconstruction
BibTeX — thanks for citing our work! 
@misc{zhangcostefficient,
  author = {Yuxuan Zhang and T.M. Sazzad and Yangyang Song and Spencer J. Chang and Ritesh Chowdhry and Tomas Mejia and Anna Hampton and Shelby Kucharski and Stefan Gerber and Barry Tillman and Marcio F. R. Resende and William M. Hammond and Chris H. Wilson and Alina Zare and S. J. Koppal},
  title = {Cost-efficient Active Illumination Camera For Hyper-spectral Reconstruction},
  howpublished = {arXiv},
}

Yuxuan Zhang, T.M. Sazzad, Yangyang Song, Spencer J. Chang, Ritesh Chowdhry, Tomas Mejia, Anna Hampton, Shelby Kucharski, Stefan Gerber, Barry Tillman, Marcio F. R. Resende, William M. Hammond, Chris H. Wilson, Alina Zare, S. J. Koppal, 
PDF | arXiv

Hyperspectral Signals in the Soil: Plant-soil Hydraulic Connection and Disequilibrium as Mechanisms of Drought Tolerance and Rapid Recovery
BibTeX — thanks for citing our work! 
@article{songhyperspectral,
  author = {Yangyang Song and Gerard Sapes and Spencer Chang and Ritesh Chowdhry and Tomas Mejia and Anna Hampton and Shelby Kucharski and Shahiar Sazzad TM and Yuxuan Zhang and Barry L. Tillman and Marcio Resende F R and S. J. Koppal and Chris Wilson and Stefan Gerber and Alina Zare and William Hammond},
  title = {Hyperspectral Signals in the Soil: Plant-soil Hydraulic Connection and Disequilibrium as Mechanisms of Drought Tolerance and Rapid Recovery},
}

Yangyang Song, Gerard Sapes, Spencer Chang, Ritesh Chowdhry, Tomas Mejia, Anna Hampton, Shelby Kucharski, Shahiar Sazzad TM, Yuxuan Zhang, Barry L. Tillman, Marcio Resende F R, S. J. Koppal, Chris Wilson, Stefan Gerber, Alina Zare, William Hammond, 
PDF | Plant, Cell & Environment

Confocal Bistatic LIDAR in Scattering Media
BibTeX — thanks for citing our work! 
@article{foldenconfocal,
  author = {J. Folden and D. Alley and D. Illig and L. Mullen and S. J. Koppal},
  title = {Confocal Bistatic LIDAR in Scattering Media},
}

J. Folden, D. Alley, D. Illig, L. Mullen, S. J. Koppal, 
PDF | SPIE Defense + Commercial Sensing 2024

Demystifying Edge Cases in Advanced IC Packaging Inspection through Novel Explainable AI Metrics
BibTeX — thanks for citing our work! 
@article{ghoshdemystifying,
  author = {S. Ghosh and A. Roy and M. Al Hasan Md and P. Craig and N. Varshney and S. J. Koppal and N. Asadizanjani},
  title = {Demystifying Edge Cases in Advanced IC Packaging Inspection through Novel Explainable AI Metrics},
}

S. Ghosh, A. Roy, M. Al Hasan Md, P. Craig, N. Varshney, S. J. Koppal, N. Asadizanjani, 
PDF | ECTC 2024

Exploring physics-informed machine learning for system matrix formulation in x-ray imaging forward models
BibTeX — thanks for citing our work! 
@article{ghoshexploring,
  author = {Shajib Ghosh and Nitin Varshney and Md Mahfuz Al Hasan and Antika Roy and Patrick Craig and S. J. Koppal and Hamed Dalir and Navid Asadizanjani},
  title = {Exploring physics-informed machine learning for system matrix formulation in x-ray imaging forward models},
}

Shajib Ghosh, Nitin Varshney, Md Mahfuz Al Hasan, Antika Roy, Patrick Craig, S. J. Koppal, Hamed Dalir, Navid Asadizanjani, 
PDF | Poster | SPIE Optical Engineering | SPIE Optical Engineering 2024

Optical Automated Interconnect Inspection of Printed Circuit Boards
BibTeX — thanks for citing our work! 
@inproceedings{craigoptical,
  author = {P. Craig and J. Pearson and S. Ghosh and N. Varshney and S. J. Koppal and N. Asadizanjani},
  title = {Optical Automated Interconnect Inspection of Printed Circuit Boards},
  booktitle = {ISTFA 2024},
}

P. Craig, J. Pearson, S. Ghosh, N. Varshney, S. J. Koppal, N. Asadizanjani, 
PDF | ISTFA 2024

SHIELD-PCB: Securing Hardware Inspection with Enhanced Learning and Defense against Adversarial Examples in Printed Circuit Board Images
BibTeX — thanks for citing our work! 
@article{ghoshshieldpcb,
  author = {S. Ghosh and A. Roy and N. Varshney and P. Craig and M.M. Al Hasan and S. J. Koppal and H. Dalir and ...},
  title = {SHIELD-PCB: Securing Hardware Inspection with Enhanced Learning and Defense against Adversarial Examples in Printed Circuit Board Images},
}

S. Ghosh, A. Roy, N. Varshney, P. Craig, M.M. Al Hasan, S. J. Koppal, H. Dalir, ..., 
PDF | Applications of Machine Learning 2024

Optimizing Deep Learning Performance in PCB X-Ray Inspection through Synthetic Data Tuner
BibTeX — thanks for citing our work! 
@article{ghoshoptimizing,
  author = {S. Ghosh and M.M. Al Hasan and P. Craig and A. Roy and N. Varshney and S. J. Koppal and H. Dalir and ...},
  title = {Optimizing Deep Learning Performance in PCB X-Ray Inspection through Synthetic Data Tuner},
}

S. Ghosh, M.M. Al Hasan, P. Craig, A. Roy, N. Varshney, S. J. Koppal, H. Dalir, ..., 
PDF | Applications of Machine Learning 2024

2023 ​

HyperPRI: A Dataset of Hyperspectral Images for Underground Plant Root Study
BibTeX — thanks for citing our work! 
@inproceedings{songhyperpri,
  author = {Yangyang Song and Gerard Sapes and Spencer Jordan Chang and Retish Chowdhry and Tomas Mejia and Anna Hampton and Shelby Kucharski and TM Shahriar Sazzad and Yuxuan Zhang and S. J. Koppal and Alina Zare and Stefan Gerber and Chris H Wilson and William Hammond},
  title = {HyperPRI: A Dataset of Hyperspectral Images for Underground Plant Root Study},
  booktitle = {CVPPA ICCV 2023},
  url = {https://github.com/GatorSense/HyperPRI},
}

Yangyang Song, Gerard Sapes, Spencer Jordan Chang, Retish Chowdhry, Tomas Mejia, Anna Hampton, Shelby Kucharski, TM Shahriar Sazzad, Yuxuan Zhang, S. J. Koppal, Alina Zare, Stefan Gerber, Chris H Wilson, William Hammond, 
PDF | CVPPA ICCV 2023

Schrodinger's Camera: First Steps Towards a Quantum-Based Privacy Preserving Camera
BibTeX — thanks for citing our work! 
@misc{kirklandschrodingers,
  author = {Hannah Kirkland and S. J. Koppal},
  title = {Schrodinger's Camera: First Steps Towards a Quantum-Based Privacy Preserving Camera},
  howpublished = {arXiv 2023 | TCV CVPRW 2023 | WiCV CVPRW 2023 (extended abstract)},
  url = {/research/2023/schrodinger-cam/},
}

Hannah Kirkland, S. J. Koppal, 
PDF | CODE | arXiv 2023 | TCV CVPRW 2023 | WiCV CVPRW 2023 (extended abstract)

Energy-Efficient Adaptive 3D Sensing
BibTeX — thanks for citing our work! 
@misc{tilmonenergyefficient,
  author = {Brevin Tilmon and Zhanghao Sun and S. J. Koppal and Yicheng Wu and Georgios Evangelidis and Ramzi Zahreddine and Guru Krishnan and Sizhuo Ma and Jian Wang},
  title = {Energy-Efficient Adaptive 3D Sensing},
  howpublished = {CVPR 2023},
  url = {/research/2023/e3d/},
}

Brevin Tilmon, Zhanghao Sun, S. J. Koppal, Yicheng Wu, Georgios Evangelidis, Ramzi Zahreddine, Guru Krishnan, Sizhuo Ma, Jian Wang, 
PDF | CVPR 2023

Give me some room please! Personal space bubbles for safety and performance
BibTeX — thanks for citing our work! 
@misc{larubbiogive,
  author = {Karina LaRubbio and Ethan Wilson and S. J. Koppal and Sophie Jorg and Eakta Jain},
  title = {Give me some room please! Personal space bubbles for safety and performance},
  howpublished = {IEEE VR Conference 2023 (Poster)},
}

Karina LaRubbio, Ethan Wilson, S. J. Koppal, Sophie Jorg, Eakta Jain, 
PDF | IEEE VR Conference 2023 (Poster)

Event-based Dual Photography for Transparent Scene Reconstruction
BibTeX — thanks for citing our work! 
@misc{liueventbased,
  author = {Xiaomeng Liu and Joshua D. Rego and Suren Jayasuriya and S. J. Koppal},
  title = {Event-based Dual Photography for Transparent Scene Reconstruction},
  howpublished = {Optics Letters 2023},
  url = {/research/2023/event-dual-photo/},
}

Xiaomeng Liu, Joshua D. Rego, Suren Jayasuriya, S. J. Koppal, 
PDF | Optics Letters 2023

2022 ​

BlockSLAM: Privacy and Security in Spatial Computing for the Gig Economy
BibTeX — thanks for citing our work! 
@misc{koppalblockslam,
  author = {S. J. Koppal},
  title = {BlockSLAM: Privacy and Security in Spatial Computing for the Gig Economy},
  howpublished = {FOCUS Lab Position Paper 2022},
}

S. J. Koppal, 
PDF | FOCUS Lab Position Paper 2022

Optical MEMS enable next generation solutions for robot vision and human-robot interaction
BibTeX — thanks for citing our work! 
@misc{lovelloptical,
  author = {Daniel Lovell and Veljko Milanovic and Abhishek Kasturi and Frank Hu and Karan Soni and Derek Ho and Bryan H. Atwood and Lj Ristic and Xiaomeng Liu and S. J. Koppal},
  title = {Optical MEMS enable next generation solutions for robot vision and human-robot interaction},
  howpublished = {SPIE OPTO 2022},
}

Daniel Lovell, Veljko Milanovic, Abhishek Kasturi, Frank Hu, Karan Soni, Derek Ho, Bryan H. Atwood, Lj Ristic, Xiaomeng Liu, S. J. Koppal, 
PDF | VIDEO | SPIE OPTO 2022

2021 ​

SaccadeCam: Adaptive Visual Attention for Monocular Depth Sensing
BibTeX — thanks for citing our work! 
@misc{tilmonsaccadecam,
  author = {B. Tilmon and S. J. Koppal},
  title = {SaccadeCam: Adaptive Visual Attention for Monocular Depth Sensing},
  howpublished = {International Conference on Computer Vision (ICCV) 2021},
  url = {/research/2021/saccadecam/},
}

B. Tilmon, S. J. Koppal, 
PDF | International Conference on Computer Vision (ICCV) 2021

A Monolithic Forward-View Optical Scanner by a Pair of Upright MEMS Mirrors on a SiOB for LiDAR Applications
BibTeX — thanks for citing our work! 
@misc{wangmonolithic,
  author = {D. Wang and D. Zheng and S. J. Koppal and B. Sun and H. Xie},
  title = {A Monolithic Forward-View Optical Scanner by a Pair of Upright MEMS Mirrors on a SiOB for LiDAR Applications},
  howpublished = {Journal of Microelectromechanical Systems},
  url = {/research/2018/wide-angle-mems/},
}

D. Wang, D. Zheng, S. J. Koppal, B. Sun, H. Xie, 
PDF | Journal of Microelectromechanical Systems

Dense Lissajous Sampling and Interpolation for Dynamic Light-Transport
BibTeX — thanks for citing our work! 
@misc{liudense,
  author = {X. Liu and K. Henderson and J. Rego and S. Jayasuriya and S. J. Koppal},
  title = {Dense Lissajous Sampling and Interpolation for Dynamic Light-Transport},
  howpublished = {Optics Express 2021},
  url = {/research/2021/lissajous-light-transport/},
}

X. Liu, K. Henderson, J. Rego, S. Jayasuriya, S. J. Koppal, 
PDF | Optics Express 2021

A Miniature LiDAR with a Detached MEMS Scanner for Micro-robotics
BibTeX — thanks for citing our work! 
@misc{wangminiature,
  author = {D. Wang and H. Xie and L. Thomas and S. J. Koppal},
  title = {A Miniature LiDAR with a Detached MEMS Scanner for Micro-robotics},
  howpublished = {IEEE Sensors Journal 2021},
  url = {/research/2018/wide-angle-mems/},
}

D. Wang, H. Xie, L. Thomas, S. J. Koppal, 
PDF | IEEE Sensors Journal 2021

Fast Foveating Cameras for Dense Adaptive Resolution
BibTeX — thanks for citing our work! 
@misc{tilmonfast,
  author = {B. Tilmon and E. Jain and S. Ferrari and S. J. Koppal},
  title = {Fast Foveating Cameras for Dense Adaptive Resolution},
  howpublished = {IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI) 2021},
  url = {/research/2020/foveacam/},
}

B. Tilmon, E. Jain, S. Ferrari, S. J. Koppal, 
PDF | IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI) 2021

Design and Fabrication of a Forward View Scanner on SIOB with Latch Structure for Improved Vertical Orientation
BibTeX — thanks for citing our work! 
@misc{wangdesign,
  author = {D. Wang and D. Zheng and S. J. Koppal and B. Sun and H. Xie},
  title = {Design and Fabrication of a Forward View Scanner on SIOB with Latch Structure for Improved Vertical Orientation},
  howpublished = {IEEE International Conference on Micro Electrical Mechanical Systems (MEMS) 2021},
  url = {/research/2018/wide-angle-mems/},
}

D. Wang, D. Zheng, S. J. Koppal, B. Sun, H. Xie, 
PDF | IEEE International Conference on Micro Electrical Mechanical Systems (MEMS) 2021

2020 ​

Towards a MEMS-based Adaptive LIDAR
BibTeX — thanks for citing our work! 
@misc{pittalugatowards,
  author = {F. Pittaluga and Z. Tasneem and J. Folden and B. Tilmon and A. Chakrabarti and S. J. Koppal},
  title = {Towards a MEMS-based Adaptive LIDAR},
  howpublished = {International Conference on 3D Vision (3DV) 2020},
  url = {https://www.francescopittaluga.com/adaptivelidar/index.html},
}

F. Pittaluga, Z. Tasneem, J. Folden, B. Tilmon, A. Chakrabarti, S. J. Koppal, 
PDF | International Conference on 3D Vision (3DV) 2020

Adaptive Fovea for Scanning Depth Sensors
BibTeX — thanks for citing our work! 
@misc{tasneemadaptive,
  author = {Z. Tasneem and C. Adhivarahan and D. Wang and H. Xie and K. Dantu and S. J. Koppal},
  title = {Adaptive Fovea for Scanning Depth Sensors},
  howpublished = {International Journal of Robotics Research (IJRR) 2020},
  url = {/research/2018/adaptive-depth/},
}

Z. Tasneem, C. Adhivarahan, D. Wang, H. Xie, K. Dantu, S. J. Koppal, 
PDF | International Journal of Robotics Research (IJRR) 2020

A MEMS-Based Foveating Lidar to Enable Real-Time Adaptive Depth Sensing
BibTeX — thanks for citing our work! 
@misc{pittalugamemsbased,
  author = {F. Pittaluga and Z. Tasneem and J. Folden and B. Tilmon and A. Chakrabarti and S. J. Koppal},
  title = {A MEMS-Based Foveating Lidar to Enable Real-Time Adaptive Depth Sensing},
  howpublished = {arXiv 2020},
  url = {https://www.francescopittaluga.com/adaptivelidar/index.html},
}

F. Pittaluga, Z. Tasneem, J. Folden, B. Tilmon, A. Chakrabarti, S. J. Koppal, 
PDF | arXiv 2020

FoveaCam: A MEMS Mirror-Enabled Foveating Camera
BibTeX — thanks for citing our work! 
@misc{tilmonfoveacam,
  author = {B. Tilmon and E. Jain and S. Ferrari and S. J. Koppal},
  title = {FoveaCam: A MEMS Mirror-Enabled Foveating Camera},
  howpublished = {International Conference on Computational Photography (ICCP) 2020},
  url = {/research/2020/foveacam/},
}

B. Tilmon, E. Jain, S. Ferrari, S. J. Koppal, 
CODE | PDF | International Conference on Computational Photography (ICCP) 2020

Design and Calibration of a Fast Flying-Dot Projector for Dynamic Light Transport Acquisition
BibTeX — thanks for citing our work! 
@misc{hendersondesign,
  author = {K. Henderson and X. Liu and J. Folden and B. Tilmon and S. Jayasuriya and S. J. Koppal},
  title = {Design and Calibration of a Fast Flying-Dot Projector for Dynamic Light Transport Acquisition},
  howpublished = {Transactions on Computational Imaging (TCI) 2020},
  url = {/research/2020/flying-dot/},
}

K. Henderson, X. Liu, J. Folden, B. Tilmon, S. Jayasuriya, S. J. Koppal, 
PDF | Transactions on Computational Imaging (TCI) 2020

Proximity-based Sensor Fusion of Depth Cameras and Isotropic Rad-detectors
BibTeX — thanks for citing our work! 
@misc{hendersonproximitybased,
  author = {K. Henderson and X. Liu and K. Stadnikia and A. Martin and A. Enqvist and S. J. Koppal},
  title = {Proximity-based Sensor Fusion of Depth Cameras and Isotropic Rad-detectors},
  howpublished = {Transactions on Nuclear Science 2020},
  url = {/research/2017/radiological-fusion/},
}

K. Henderson, X. Liu, K. Stadnikia, A. Martin, A. Enqvist, S. J. Koppal, 
PDF | Transactions on Nuclear Science 2020

The Security-Utility Trade-off for Iris Authentication and Eye Animation for Social Virtual Avatars
BibTeX — thanks for citing our work! 
@misc{johnsecurityutility,
  author = {B. John and S. Joerg and S. J. Koppal and E. Jain},
  title = {The Security-Utility Trade-off for Iris Authentication and Eye Animation for Social Virtual Avatars},
  howpublished = {IEEE VR 2020},
}

B. John, S. Joerg, S. J. Koppal, E. Jain, 
PDF | IEEE VR 2020

A low-voltage, low-current, digital-driven MEMS mirror for low-power LiDAR
BibTeX — thanks for citing our work! 
@misc{wanglowvoltage,
  author = {D. Wang and L. Thomas and S. J. Koppal and Y. Ding and H. Xie},
  title = {A low-voltage, low-current, digital-driven MEMS mirror for low-power LiDAR},
  howpublished = {IEEE Sensors Letters 2020},
  url = {/research/2018/wide-angle-mems/},
}

D. Wang, L. Thomas, S. J. Koppal, Y. Ding, H. Xie, 
PDF | IEEE Sensors Letters 2020

A Monolithic Forward-View MEMS Laser Scanner With Decoupled Raster Scanning and Enlarged Scanning Angle for Micro LiDAR Applications
BibTeX — thanks for citing our work! 
@misc{wangmonolithic,
  author = {D. Wang and S. J. Koppal and H. Xie},
  title = {A Monolithic Forward-View MEMS Laser Scanner With Decoupled Raster Scanning and Enlarged Scanning Angle for Micro LiDAR Applications},
  howpublished = {Journal of Microelectromechanical Systems 2020},
  url = {/research/2018/wide-angle-mems/},
}

D. Wang, S. J. Koppal, H. Xie, 
PDF | Journal of Microelectromechanical Systems 2020

2019 ​

A Compact Omnidirectional Laser Scanner Based on an Electrothermal Tripod MEMS Mirror for LiDAR
BibTeX — thanks for citing our work! 
@misc{wangcompact,
  author = {D. Wang and C. Watkins and S. J. Koppal and M. Li and Y. Ding and H. Xie},
  title = {A Compact Omnidirectional Laser Scanner Based on an Electrothermal Tripod MEMS Mirror for LiDAR},
  howpublished = {Transducers 2019},
  url = {/research/2018/wide-angle-mems/},
}

D. Wang, C. Watkins, S. J. Koppal, M. Li, Y. Ding, H. Xie, 
PDF | Transducers 2019

A Large Aperture 2-Axis Electrothermal MEMS Mirror for Compact 3-D LiDAR
BibTeX — thanks for citing our work! 
@misc{wanglarge,
  author = {D. Wang and C. Watkins and M. Aradhya and S. J. Koppal and H. Xie},
  title = {A Large Aperture 2-Axis Electrothermal MEMS Mirror for Compact 3-D LiDAR},
  howpublished = {International Conference on Optical MEMS and Nanophotonics (OMN) 2019},
  url = {/research/2018/wide-angle-mems/},
}

D. Wang, C. Watkins, M. Aradhya, S. J. Koppal, H. Xie, 
PDF | International Conference on Optical MEMS and Nanophotonics (OMN) 2019

Revealing Scenes by Inverting Structure from Motion Reconstructions
BibTeX — thanks for citing our work! 
@misc{pittalugarevealing,
  author = {F. Pittaluga and S. J. Koppal and S. Kang and S. Sinha},
  title = {Revealing Scenes by Inverting Structure from Motion Reconstructions},
  howpublished = {Best Paper Finalist | Conference on Computer Vision and Pattern Recognition (CVPR) 2019},
  url = {/research/2019/privacy-cameras/},
}

F. Pittaluga, S. J. Koppal, S. Kang, S. Sinha, 
PDF | Best Paper Finalist | Conference on Computer Vision and Pattern Recognition (CVPR) 2019

EyeVEIL: Degrading Iris Authentication in Eye-Tracking Headsets
BibTeX — thanks for citing our work! 
@misc{johneyeveil,
  author = {B. John and S. J. Koppal and E. Jain},
  title = {EyeVEIL: Degrading Iris Authentication in Eye-Tracking Headsets},
  howpublished = {ACM Symposium on Eye Tracking Research & Applications (ETRA) 2019},
  url = {/research/2019/privacy-cameras/},
}

B. John, S. J. Koppal, E. Jain, 
PDF | ACM Symposium on Eye Tracking Research & Applications (ETRA) 2019

Learning Privacy Preserving Encodings through Adversarial Training
BibTeX — thanks for citing our work! 
@misc{pittalugalearning,
  author = {F. Pittaluga and S. J. Koppal and A. Chakrabarti},
  title = {Learning Privacy Preserving Encodings through Adversarial Training},
  howpublished = {IEEE Winter Conference on Applications of Computer Vision (WACV) 2019},
  url = {/research/2019/privacy-cameras/},
}

F. Pittaluga, S. J. Koppal, A. Chakrabarti, 
PDF | IEEE Winter Conference on Applications of Computer Vision (WACV) 2019

2018 ​

Directionally Controlled Time-of-Flight Ranging for Mobile Sensing Platforms
BibTeX — thanks for citing our work! 
@misc{tasneemdirectionally,
  author = {Z. Tasneem and D. Wang and H. Xie and S. J. Koppal},
  title = {Directionally Controlled Time-of-Flight Ranging for Mobile Sensing Platforms},
  howpublished = {Robotics: Science and Systems (RSS) 2018},
  url = {/research/2018/adaptive-depth/},
}

Z. Tasneem, D. Wang, H. Xie, S. J. Koppal, 
PDF | Robotics: Science and Systems (RSS) 2018

An Integrated Forward-View 2-Axis MEMS Scanner for Compact 3D LIDAR
BibTeX — thanks for citing our work! 
@misc{wangintegrated,
  author = {D. Wang and S. S. Rojas and Al. Shuping and Z. Tasneem and S. J. Koppal and H. Xie},
  title = {An Integrated Forward-View 2-Axis MEMS Scanner for Compact 3D LIDAR},
  howpublished = {Winner of Best Student Paper Award | NEMS 2018},
  url = {/research/2018/wide-angle-mems/},
}

D. Wang, S. S. Rojas, Al. Shuping, Z. Tasneem, S. J. Koppal, H. Xie, 
PDF | Winner of Best Student Paper Award | NEMS 2018

A Compact 3D LIDAR Based on an Electrothermal Two-Axis MEMS Scanner for Small UAV
BibTeX — thanks for citing our work! 
@misc{wangcompact,
  author = {D. Wang and S. Strassle and A. Stainsby and Y. Bai and S. J. Koppal and et al.},
  title = {A Compact 3D LIDAR Based on an Electrothermal Two-Axis MEMS Scanner for Small UAV},
  howpublished = {SPIE 2018},
  url = {/research/2018/wide-angle-mems/},
}

D. Wang, S. Strassle, A. Stainsby, Y. Bai, S. J. Koppal, et al., 
PDF | SPIE 2018

Designing Light Filters to Detect Skin Using a Low-powered Sensor
BibTeX — thanks for citing our work! 
@misc{tariqdesigning,
  author = {M. U. Tariq and A. K. Ghosh and K. Badillo-Urquiola and A. Jha and S. J. Koppal and P. J. Wisniewski},
  title = {Designing Light Filters to Detect Skin Using a Low-powered Sensor},
  howpublished = {SoutheastCon 2018},
}

M. U. Tariq, A. K. Ghosh, K. Badillo-Urquiola, A. Jha, S. J. Koppal, P. J. Wisniewski, 
PDF | SoutheastCon 2018

Data Fusion for a Vision-Aided Radiological Detection System: Calibration Algorithm Performance
BibTeX — thanks for citing our work! 
@misc{stadnikiadata,
  author = {K. Stadnikia and K. Henderson and A. Martin and P. Riley and S. J. Koppal and A. Enqvist},
  title = {Data Fusion for a Vision-Aided Radiological Detection System: Calibration Algorithm Performance},
  howpublished = {Nuclear Instruments and Methods in Physics A},
  url = {/research/2017/radiological-fusion/},
}

K. Stadnikia, K. Henderson, A. Martin, P. Riley, S. J. Koppal, A. Enqvist, 
PDF | Nuclear Instruments and Methods in Physics A

2017 ​

Tracking Radioactive Sources through Sensor Fusion of Omnidirectional LIDAR and Isotropic Rad-detectors
BibTeX — thanks for citing our work! 
@misc{hendersontracking,
  author = {K. Henderson and K. Stadnikia and A. Martin and A. Enqvist and S. J. Koppal},
  title = {Tracking Radioactive Sources through Sensor Fusion of Omnidirectional LIDAR and Isotropic Rad-detectors},
  howpublished = {3DV 2017},
  url = {/research/2017/radiological-fusion/},
}

K. Henderson, K. Stadnikia, A. Martin, A. Enqvist, S. J. Koppal, 
PDF | 3DV 2017

Focal Flow: Velocity and Depth from Differential Defocus through Motion
BibTeX — thanks for citing our work! 
@misc{alexanderfocal,
  author = {E. Alexander and Q. Guo and S. J. Koppal and S.J. Gortler and T. Zickler},
  title = {Focal Flow: Velocity and Depth from Differential Defocus through Motion},
  howpublished = {IJCV 2017},
}

E. Alexander, Q. Guo, S. J. Koppal, S.J. Gortler, T. Zickler, 
PDF | IJCV 2017

Situational Information Guidance for Revised Detection Limits
BibTeX — thanks for citing our work! 
@misc{stadnikiasituational,
  author = {K. Stadnikia and K. Henderson and S. J. Koppal and A. Enqvist},
  title = {Situational Information Guidance for Revised Detection Limits},
  howpublished = {Nuclear Science Symposium/Medical Imaging Conference 2017},
  url = {/research/2017/radiological-fusion/},
}

K. Stadnikia, K. Henderson, S. J. Koppal, A. Enqvist, 
PDF | Nuclear Science Symposium/Medical Imaging Conference 2017

A Compact MEMS-Based Wide-Angle Optical Scanner
BibTeX — thanks for citing our work! 
@misc{yangcompact,
  author = {B. Yang and L. Zhou and X. Zhang and D. Wang and S. J. Koppal and H. Xie},
  title = {A Compact MEMS-Based Wide-Angle Optical Scanner},
  howpublished = {OMN 2017},
  url = {/research/2018/wide-angle-mems/},
}

B. Yang, L. Zhou, X. Zhang, D. Wang, S. J. Koppal, H. Xie, 
PDF | OMN 2017

Creating Segments and Effects on Comics by Clustering Gaze Data
BibTeX — thanks for citing our work! 
@misc{thirunarayancreating,
  author = {I. Thirunarayan and K. Khetarpal and S. J. Koppal and O. LeMeur and J. Shea and E. Jain},
  title = {Creating Segments and Effects on Comics by Clustering Gaze Data},
  howpublished = {Transactions on Multimedia Computing (TOMM), 2017},
  url = {http://jainlab.cise.ufl.edu/comics.html#creating-segments-and},
}

I. Thirunarayan, K. Khetarpal, S. J. Koppal, O. LeMeur, J. Shea, E. Jain, 
PDF | Transactions on Multimedia Computing (TOMM), 2017

Pre-Capture Privacy for Small Vision Sensors
BibTeX — thanks for citing our work! 
@misc{pittalugaprecapture,
  author = {F. Pittaluga and S. J. Koppal},
  title = {Pre-Capture Privacy for Small Vision Sensors},
  howpublished = {IEEE Transactions on Pattern Analysis and Machine Intelligence, 2017},
  url = {/research/2019/privacy-cameras/},
}

F. Pittaluga, S. J. Koppal, 
PDF | IEEE Transactions on Pattern Analysis and Machine Intelligence, 2017

2016 ​

Focal Flow: Measuring Distance and Velocity with Defocus and Differential Motion
BibTeX — thanks for citing our work! 
@misc{alexanderfocal,
  author = {E. Alexander and Q. Guo and S. J. Koppal and S.J. Gortler and T. Zickler},
  title = {Focal Flow: Measuring Distance and Velocity with Defocus and Differential Motion},
  howpublished = {Winner of Best Student Paper Award | European Conference on Computer Vision, 2016},
}

E. Alexander, Q. Guo, S. J. Koppal, S.J. Gortler, T. Zickler, 
PDF | Winner of Best Student Paper Award | European Conference on Computer Vision, 2016

Leveraging Gaze Data for Segmentation and Effects on Comics
BibTeX — thanks for citing our work! 
@misc{thirunarayananleveraging,
  author = {I. Thirunarayanan and S. J. Koppal and J. Shea and E. Jain},
  title = {Leveraging Gaze Data for Segmentation and Effects on Comics},
  howpublished = {ACM Symposium on Applied Perception Poster, 2016},
  url = {http://jainlab.cise.ufl.edu/comics.html#gaze-data},
}

I. Thirunarayanan, S. J. Koppal, J. Shea, E. Jain, 
PDF | ACM Symposium on Applied Perception Poster, 2016

A Survey of Computational Photography in the Small
BibTeX — thanks for citing our work! 
@misc{koppalsurvey,
  author = {S. J. Koppal},
  title = {A Survey of Computational Photography in the Small},
  howpublished = {IEEE Signal Processing Magazine, 2016},
}

S. J. Koppal, 
PDF | IEEE Signal Processing Magazine, 2016

A Wide-angle Immersed MEMS Mirror and Its Application in Optical Coherence Tomography
BibTeX — thanks for citing our work! 
@misc{zhangwideangle,
  author = {X. Zhang and L. Zhou and C. Duan and D. Zheng and S. J. Koppal and H. Xie},
  title = {A Wide-angle Immersed MEMS Mirror and Its Application in Optical Coherence Tomography},
  howpublished = {International Conference on Optical MEMS and Nanophotonics, 2016},
  url = {/research/2018/wide-angle-mems/},
}

X. Zhang, L. Zhou, C. Duan, D. Zheng, S. J. Koppal, H. Xie, 
PDF | International Conference on Optical MEMS and Nanophotonics, 2016

Sensor-level Privacy for Thermal Cameras
BibTeX — thanks for citing our work! 
@misc{pittalugasensorlevel,
  author = {F. Pittaluga and A. Zivkovic and S. J. Koppal},
  title = {Sensor-level Privacy for Thermal Cameras},
  howpublished = {International Conference on Computational Photography, 2016},
  url = {/research/2019/privacy-cameras/},
}

F. Pittaluga, A. Zivkovic, S. J. Koppal, 
PDF | International Conference on Computational Photography, 2016

Wide-angle Structured Light with a Scanning MEMS Mirror in Liquid
BibTeX — thanks for citing our work! 
@misc{zhangwideangle,
  author = {X. Zhang and S. J. Koppal and R. Zhang and L. Zhou and E. Butler and H. Xie},
  title = {Wide-angle Structured Light with a Scanning MEMS Mirror in Liquid},
  howpublished = {Optics Express 2016},
  url = {/research/2018/wide-angle-mems/},
}

X. Zhang, S. J. Koppal, R. Zhang, L. Zhou, E. Butler, H. Xie, 
PDF | Optics Express 2016

2015 ​

Low Power Depth and Velocity from a Passive Moving Sensors
BibTeX — thanks for citing our work! 
@misc{alexanderpower,
  author = {E. Alexander and S. J. Koppal and T. Zickler},
  title = {Low Power Depth and Velocity from a Passive Moving Sensors},
  howpublished = {Extreme Imaging Workshop 2015},
}

E. Alexander, S. J. Koppal, T. Zickler, 
PDF | Extreme Imaging Workshop 2015

Low-Cost Depth and Radiological Sensor Fusion to Detect Moving Sources
BibTeX — thanks for citing our work! 
@misc{rileylowcost,
  author = {P. Riley and A. Enqvist and S. J. Koppal},
  title = {Low-Cost Depth and Radiological Sensor Fusion to Detect Moving Sources},
  howpublished = {3DV 2015},
  url = {/research/2017/radiological-fusion/},
}

P. Riley, A. Enqvist, S. J. Koppal, 
PDF | 3DV 2015

Privacy Preserving Optics for Miniature Vision Sensors
BibTeX — thanks for citing our work! 
@misc{pittalugaprivacy,
  author = {F. Pittaluga and S. J. Koppal},
  title = {Privacy Preserving Optics for Miniature Vision Sensors},
  howpublished = {Conference on Computer Vision and Pattern Recognition, 2015},
  url = {/research/2019/privacy-cameras/},
}

F. Pittaluga, S. J. Koppal, 
PDF | Conference on Computer Vision and Pattern Recognition, 2015

Data Fusion for a Vision-Radiological System for Source Tracking and Discovery
BibTeX — thanks for citing our work! 
@misc{enqvistdata,
  author = {A. Enqvist and S. J. Koppal},
  title = {Data Fusion for a Vision-Radiological System for Source Tracking and Discovery},
  howpublished = {Advancements in Nuclear Instrumentation Measurement Methods and their Applic., 2015},
  url = {/research/2017/radiological-fusion/},
}

A. Enqvist, S. J. Koppal, 
Advancements in Nuclear Instrumentation Measurement Methods and their Applic., 2015

Generalized Assorted Camera Arrays: Robust Cross-channel Registration and Applic.
BibTeX — thanks for citing our work! 
@misc{hollowaygeneralized,
  author = {J. Holloway and K. Mitra and S. J. Koppal and A. Veeraraghavan},
  title = {Generalized Assorted Camera Arrays: Robust Cross-channel Registration and Applic.},
  howpublished = {Transactions on Image Processing, 2015},
  url = {http://www.jrholloway.com/projects/GAC/},
}

J. Holloway, K. Mitra, S. J. Koppal, A. Veeraraghavan, 
PDF | Transactions on Image Processing, 2015

MEMS Mirrors Submerged in Liquid for Wide-angle Scanning
BibTeX — thanks for citing our work! 
@misc{zhangmems,
  author = {X. Zhang and R. Zhang and S. J. Koppal and L. Butler and X. Cheng and H. Xie},
  title = {MEMS Mirrors Submerged in Liquid for Wide-angle Scanning},
  howpublished = {International Conference on Solid-State Sensors, Actuators and Microsystems, 2015},
  url = {/research/2018/wide-angle-mems/},
}

X. Zhang, R. Zhang, S. J. Koppal, L. Butler, X. Cheng, H. Xie, 
PDF | International Conference on Solid-State Sensors, Actuators and Microsystems, 2015

Beyond Perspective Dual Photography with Illumination Masks
BibTeX — thanks for citing our work! 
@misc{koppalbeyond,
  author = {S. J. Koppal and S. G. Narasimhan},
  title = {Beyond Perspective Dual Photography with Illumination Masks},
  howpublished = {Transactions on Image Processing, 2015},
  url = {http://www.cs.cmu.edu/~ILIM/projects/IM/shadow_cameras/shadow_cameras.html},
}

S. J. Koppal, S. G. Narasimhan, 
PDF | Transactions on Image Processing, 2015

2013 ​

Towards wide-angle micro vision sensors
BibTeX — thanks for citing our work! 
@misc{koppaltowards,
  author = {S. J. Koppal and I. Gkioulekas and T. Young and H. Park and K. Crozier and G. Barrows and T. Zickler},
  title = {Towards wide-angle micro vision sensors},
  howpublished = {Transactions on Pattern Analysis and Machine Intelligence, 2013 (Invited paper for special issue)},
  url = {/research/2011/micro-vision-sensors/},
}

S. J. Koppal, I. Gkioulekas, T. Young, H. Park, K. Crozier, G. Barrows, T. Zickler, 
PDF | Transactions on Pattern Analysis and Machine Intelligence, 2013 (Invited paper for special issue)

2012 ​

A low-power structured light sensor for outdoor scene reconstruction and dominant material identification
BibTeX — thanks for citing our work! 
@misc{mertzlowpower,
  author = {C. Mertz and S. J. Koppal and S. Sia and S. G. Narasimhan},
  title = {A low-power structured light sensor for outdoor scene reconstruction and dominant material identification},
  howpublished = {International Workshop on Projector-Camera Systems, 2012},
  url = {http://www.cs.cmu.edu/~ILIM/projects/IL/sunlight/},
}

C. Mertz, S. J. Koppal, S. Sia, S. G. Narasimhan, 
PDF | International Workshop on Projector-Camera Systems, 2012

2011 ​

Exploiting DLP illumination dithering for reconstruction and photography of high-speed scenes
BibTeX — thanks for citing our work! 
@misc{koppalexploiting,
  author = {S. J. Koppal and S. Yamazaki and S. G. Narasimhan},
  title = {Exploiting DLP illumination dithering for reconstruction and photography of high-speed scenes},
  howpublished = {International Journal on Computer Vision, 2011},
  url = {http://www.cs.cmu.edu/~ILIM/projects/IL/dlp-dithering/},
}

S. J. Koppal, S. Yamazaki, S. G. Narasimhan, 
PDF | International Journal on Computer Vision, 2011

A viewer-centric editor for stereoscopic cinema
BibTeX — thanks for citing our work! 
@misc{koppalviewercentric,
  author = {S. J. Koppal and L. Zitnick and M. Cohen and S. Kang and B. Ressler and A. Colburn},
  title = {A viewer-centric editor for stereoscopic cinema},
  howpublished = {IEEE Computer Graphics and Applications, 2011},
  url = {/research/2010/stereo-editing/},
}

S. J. Koppal, L. Zitnick, M. Cohen, S. Kang, B. Ressler, A. Colburn, 
PDF | IEEE Computer Graphics and Applications, 2011

Wide-angle micro sensors for vision on a tight budget
BibTeX — thanks for citing our work! 
@misc{koppalwideangle,
  author = {S. J. Koppal and I. Gkioulekas and T. Zickler and G. Barrows},
  title = {Wide-angle micro sensors for vision on a tight budget},
  howpublished = {Conference on Computer Vision and Pattern Recognition, 2011 (Oral Presentation, 4% acceptance rate)},
  url = {/research/2011/micro-vision-sensors/},
}

S. J. Koppal, I. Gkioulekas, T. Zickler, G. Barrows, 
PDF | Conference on Computer Vision and Pattern Recognition, 2011 (Oral Presentation, 4% acceptance rate)

2009 ​

Shadow cameras: Reciprocal views from illumination masks
BibTeX — thanks for citing our work! 
@misc{koppalshadow,
  author = {S. J. Koppal and S. G. Narasimhan},
  title = {Shadow cameras: Reciprocal views from illumination masks},
  howpublished = {International Conference on Computer Vision, 2009 (Poster Presentation, 20% acceptance rate)},
  url = {http://www.cs.cmu.edu/~ILIM/projects/IM/shadow_cameras/shadow_cameras.html},
}

S. J. Koppal, S. G. Narasimhan, 
PDF | International Conference on Computer Vision, 2009 (Poster Presentation, 20% acceptance rate)

2008 ​

Temporal dithering of illumination for fast active vision
BibTeX — thanks for citing our work! 
@misc{narasimhantemporal,
  author = {S. G. Narasimhan and S. J. Koppal and S. Yamazaki},
  title = {Temporal dithering of illumination for fast active vision},
  howpublished = {European Conference on Computer Vision, 2008 (Oral Presentation, 4% acceptance rate)},
  url = {http://www.cs.cmu.edu/~ILIM/projects/IL/dlp-dithering/},
}

S. G. Narasimhan, S. J. Koppal, S. Yamazaki, 
PDF | European Conference on Computer Vision, 2008 (Oral Presentation, 4% acceptance rate)

Illustrating motion through DLP photography
BibTeX — thanks for citing our work! 
@misc{koppalillustrating,
  author = {S. J. Koppal and S. G. Narasimhan},
  title = {Illustrating motion through DLP photography},
  howpublished = {International Workshop on Projector-Camera Systems, 2008},
  url = {http://www.cs.cmu.edu/~ILIM/projects/IM/procams%20webpage/motion_illustrations.html},
}

S. J. Koppal, S. G. Narasimhan, 
PDF | International Workshop on Projector-Camera Systems, 2008

Appearance derivatives for iso-normal clustering of scenes
BibTeX — thanks for citing our work! 
@misc{koppalappearance,
  author = {S. J. Koppal and S. G. Narasimhan},
  title = {Appearance derivatives for iso-normal clustering of scenes},
  howpublished = {Transactions on Pattern Analysis and Machine Intelligence, 2008},
  url = {http://www.cs.cmu.edu/~ILIM/projects/AA/clustering.html},
}

S. J. Koppal, S. G. Narasimhan, 
PDF | Transactions on Pattern Analysis and Machine Intelligence, 2008

2007 ​

Novel depth cues from uncalibrated near-field lighting
BibTeX — thanks for citing our work! 
@misc{koppalnovel,
  author = {S. J. Koppal and S. G. Narasimhan},
  title = {Novel depth cues from uncalibrated near-field lighting},
  howpublished = {International Conference on Computer Vision, 2007 (Poster Presentation, 20% acceptance rate)},
  url = {http://www.cs.cmu.edu/~ILIM/projects/AA/depth_cues.html},
}

S. J. Koppal, S. G. Narasimhan, 
PDF | International Conference on Computer Vision, 2007 (Poster Presentation, 20% acceptance rate)

2006 ​

Clustering appearance for scene analysis
BibTeX — thanks for citing our work! 
@misc{koppalclustering,
  author = {S. J. Koppal and S. G. Narasimhan},
  title = {Clustering appearance for scene analysis},
  howpublished = {Conference on Computer Vision and Pattern Recognition, 2006 (Oral Presentation, 4% acceptance rate)},
  url = {http://www.cs.cmu.edu/~ILIM/projects/AA/clustering.html},
}

S. J. Koppal, S. G. Narasimhan, 
PDF | Conference on Computer Vision and Pattern Recognition, 2006 (Oral Presentation, 4% acceptance rate)

Taylor series of appearance functions
BibTeX — thanks for citing our work! 
@misc{koppaltaylor,
  author = {S. J. Koppal and A. Datta and S. G. Narasimhan and K. Nishino},
  title = {Taylor series of appearance functions},
  howpublished = {CMU-Robotics Institute Technical report, 2006},
}

S. J. Koppal, A. Datta, S. G. Narasimhan, K. Nishino, 
CMU-Robotics Institute Technical report, 2006

2005 ​

Structured light from scattering media
BibTeX — thanks for citing our work! 
@misc{narasimhanstructured,
  author = {S. G. Narasimhan and S. K. Nayar and B. Sun and S. J. Koppal},
  title = {Structured light from scattering media},
  howpublished = {International Conference on Computer Vision, 2005 (Oral Presentation, 4% acceptance rate)},
  url = {http://www.cs.cmu.edu/~ILIM/projects/LT/structured/structured.html},
}

S. G. Narasimhan, S. K. Nayar, B. Sun, S. J. Koppal, 
International Conference on Computer Vision, 2005 (Oral Presentation, 4% acceptance rate)