Timothy Bretl

ORCID

Publication Activity (10 Years)

Years Active: 2003-2024
Publications (10 Years): 49

Top Venues

CoRR

ICRA

IEEE Robotics Autom. Lett.

EMBC

Publications

Jongwon Lee, David Hanley, Timothy Bretl
Efficient Extrinsic Self-Calibration of Multiple IMUs using Measurement Subset Selection. CoRR (2024)
Qi Jing Chen, Timothy Bretl, Nghia Vuong, Quang-Cuong Pham
Dynamic Manipulation of a Deformable Linear Object: Simulation and Learning. CoRR (2023)
Andy Borum, Timothy Bretl
Pointwise Sufficient Conditions for One-Dimensional Optimal Control Problems. IEEE Control. Syst. Lett. 7 (2023)
Jongwon Lee, Su Yeon Choi, Timothy Bretl
The Use of Multi-Scale Fiducial Markers To Aid Takeoff and Landing Navigation by Rotorcraft. CoRR (2023)
Jingyi Xiang, Holly Dinkel, Harry Zhao, Naixiang Gao, Brian Coltin, Trey Smith, Timothy Bretl
TrackDLO: Tracking Deformable Linear Objects Under Occlusion With Motion Coherence. IEEE Robotics Autom. Lett. 8 (10) (2023)
Minh Q. Ta, Holly Dinkel, Hameed Abdul-Rashid, Yangfei Dai, Jessica Myers, Tan Chen, Junyi Geng, Timothy Bretl
The Impact of Time Step Frequency on the Realism of Robotic Manipulation Simulation for Objects of Different Scales. CoRR (2023)
James Motes, Tan Chen, Timothy Bretl, Marco Morales, Nancy M. Amato
Hypergraph-Based Multi-robot Task and Motion Planning. IEEE Trans. Robotics 39 (5) (2023)
Ehsan Saleh, Saba Ghaffari, Timothy Bretl, Luke N. Olson, Matthew West
Learning from Integral Losses in Physics Informed Neural Networks. CoRR (2023)
Jongwon Lee, Su Yeon Choi, David Hanley, Timothy Bretl
Comparative Study of Visual SLAM-Based Mobile Robot Localization Using Fiducial Markers. CoRR (2023)
James Motes, Tan Chen, Timothy Bretl, Marco Morales, Nancy M. Amato
Hypergraph-based Multi-Robot Task and Motion Planning. CoRR (2022)
Tan Chen, Zhe Huang, James Motes, Junyi Geng, Quang Minh Ta, Holly Dinkel, Hameed Abdul-Rashid, Jessica Myers, Ye-Ji Mun, Wei-che Lin, Yuan-yung Huang, Sizhe Liu, Marco Morales, Nancy M. Amato, Katherine Rose Driggs-Campbell, Timothy Bretl
Insights from an Industrial Collaborative Assembly Project: Lessons in Research and Collaboration. CoRR (2022)
Ehsan Saleh, Saba Ghaffari, Timothy Bretl, Matthew West
Truly Deterministic Policy Optimization. CoRR (2022)
Zherong Pan, Tan Chen, Xianzhong Fang, Timothy Bretl, Xifeng Gao, Kui Wu
Environment Warped Gait Trajectory Optimization for Complex Terrains. IEEE Robotics Autom. Lett. 7 (4) (2022)
Xinke Deng, Junyi Geng, Timothy Bretl, Yu Xiang, Dieter Fox
iCaps: Iterative Category-Level Object Pose and Shape Estimation. IEEE Robotics Autom. Lett. 7 (2) (2022)
Xinke Deng, Junyi Geng, Timothy Bretl, Yu Xiang, Dieter Fox
iCaps: Iterative Category-level Object Pose and Shape Estimation. CoRR (2022)
Jongwon Lee, David Hanley, Timothy Bretl
Extrinsic Calibration of Multiple Inertial Sensors From Arbitrary Trajectories. IEEE Robotics Autom. Lett. 7 (2) (2022)
Jongwon Lee, David Hanley, Timothy Bretl
Extrinsic Calibration of Multiple Inertial Sensors from Arbitrary Trajectories. CoRR (2022)
Ehsan Saleh, Saba Ghaffari, Timothy Bretl, Matthew West
Truly Deterministic Policy Optimization. NeurIPS (2022)
David Hanley, Augusto S. Dantas de Oliveira, Xiangyuan Zhang, Dae Hyun Kim, Yusheng Wei, Timothy Bretl
The Impact of Height on Indoor Positioning With Magnetic Fields. IEEE Trans. Instrum. Meas. 70 (2021)
Chinedu Emeka, Timothy Bretl, Geoffrey L. Herman, Matthew West, Craig B. Zilles
Students' Perceptions and Behavior Related to Second-Chance Testing. FIE (2021)
Xinke Deng, Arsalan Mousavian, Yu Xiang, Fei Xia, Timothy Bretl, Dieter Fox
PoseRBPF: A Rao-Blackwellized Particle Filter for 6-D Object Pose Tracking. IEEE Trans. Robotics 37 (5) (2021)
David Hanley, Augusto S. Dantas de Oliveira, Xiangyuan Zhang, Dae Hyun Kim, Yusheng Wei, Timothy Bretl
Erratum to "The Impact of Height on Indoor Positioning With Magnetic Fields". IEEE Trans. Instrum. Meas. 70 (2021)
Xinke Deng, Yu Xiang, Arsalan Mousavian, Clemens Eppner, Timothy Bretl, Dieter Fox
Self-supervised 6D Object Pose Estimation for Robot Manipulation. ICRA (2020)
Avishai Sintov, Steven Macenski, Andy Borum, Timothy Bretl
Motion Planning for Dual-Arm Manipulation of Elastic Rods. IEEE Robotics Autom. Lett. 5 (4) (2020)
Ashank Verma, Timothy Bretl, Matthew West, Craig B. Zilles
A Quantitative Analysis of When Students Choose to Grade Questions on Computerized Exams with Multiple Attempts. L@S (2020)
Geoffrey L. Herman, Zhouxiang Cai, Timothy Bretl, Craig B. Zilles, Matthew West
Comparison of Grade Replacement and Weighted Averages for Second-Chance Exams. ICER (2020)
Binglin Chen, Craig B. Zilles, Matthew West, Timothy Bretl
Effect of Discrete and Continuous Parameter Variation on Difficulty in Automatic Item Generation. AIED (1) (2019)
Timothy Bretl, Ludovic Righetti, Raj Madhavan
Epstein, Project Maven, and Some Reasons to Think About Where We Get Our Funding [Ethical, Legal, and Societal Issues]. IEEE Robotics Autom. Mag. 26 (4) (2019)
Xinke Deng, Arsalan Mousavian, Yu Xiang, Fei Xia, Timothy Bretl, Dieter Fox
PoseRBPF: A Rao-Blackwellized Particle Filter for 6D Object Pose Tracking. CoRR (2019)
Xinke Deng, Arsalan Mousavian, Yu Xiang, Fei Xia, Timothy Bretl, Dieter Fox
PoseRBPF: A Rao-Blackwellized Particle Filter for6D Object Pose Estimation. Robotics: Science and Systems (2019)
Xinke Deng, Yu Xiang, Arsalan Mousavian, Clemens Eppner, Timothy Bretl, Dieter Fox
Self-supervised 6D Object Pose Estimation for Robot Manipulation. CoRR (2019)
Craig B. Zilles, Matthew West, Geoffrey L. Herman, Timothy Bretl
Every University Should Have a Computer-Based Testing Facility. CSEDU (1) (2019)
Joseph DeGol, Timothy Bretl, Derek Hoiem
Improved Structure from Motion Using Fiducial Marker Matching. ECCV (3) (2018)
Craig B. Zilles, Matthew West, David Mussulman, Timothy Bretl
Making Testing Less Trying: Lessons Learned from Operating a Computer-Based Testing Facility. FIE (2018)
David Hanley, Xiangyuan Zhang, Augusto S. Dantas de Oliveira, Daniel Steinberg, Timothy Bretl
Experimental Evaluation of the Planar Assumption in Magnetic Positioning. IPIN (2018)
Xinke Deng, Zixu Zhang, Avishai Sintov, Jing Huang, Timothy Bretl
Feature-constrained Active Visual SLAM for Mobile Robot Navigation. ICRA (2018)
Avishai Sintov, Andy Borum, Timothy Bretl
Motion Planning of Fully Actuated Closed Kinematic Chains With Revolute Joints: A Comparative Analysis. IEEE Robotics Autom. Lett. 3 (4) (2018)
Joseph DeGol, Jae Yong Lee, Rajbir Kataria, Daniel Yuan, Timothy Bretl, Derek Hoiem
FEATS: Synthetic Feature Tracks for Structure from Motion Evaluation. 3DV (2018)
Joseph Sombeck, Brandon Boyce, Timothy Bretl
Controlling sensation intensity for electrotactile stimulation in human-machine interfaces. Sci. Robotics 3 (17) (2018)
David Hanley, Alexander B. Faustino, Scott D. Zelman, David A. Degenhardt, Timothy Bretl
MagPIE: A dataset for indoor positioning with magnetic anomalies. IPIN (2017)
Andy Borum, Timothy Bretl
Reduction of Sufficient Conditions for Optimal Control Problems With Subgroup Symmetry. IEEE Trans. Autom. Control. 62 (7) (2017)
Joseph DeGol, Timothy Bretl, Derek Hoiem
ChromaTag: A Colored Marker and Fast Detection Algorithm. ICCV (2017)
Jesse Cornman, Aadeel Akhtar, Timothy Bretl
A portable, arbitrary waveform, multichannel constant current electrotactile stimulator. NER (2017)
Kyung Yun Choi, Aadeel Akhtar, Timothy Bretl
A compliant four-bar linkage mechanism that makes the fingers of a prosthetic hand more impact resistant. ICRA (2017)
Joseph DeGol, Timothy Bretl, Derek Hoiem
ChromaTag: A Colored Marker and Fast Detection Algorithm. CoRR (2017)
Andy Borum, Timothy Bretl
Helices, relative equilibria, and optimality on the special Euclidean group. CDC (2016)
Joseph DeGol, Aadeel Akhtar, Bhargava Manja, Timothy Bretl
Automatic grasp selection using a camera in a hand prosthesis. EMBC (2016)
Andy Borum, Timothy Bretl
Sufficient Conditions for a Path-Connected Set of Local Solutions to an Optimal Control Problem. SIAM J. Appl. Math. 76 (3) (2016)
Aadeel Akhtar, Kyung Yun Choi, Michael Fatina, Jesse Cornman, Edward Wu, Joseph Sombeck, Chris Yim, Patrick Slade, Jason Lee, Jack Moore, Daniel Gonzales, Alvin Wu, Garrett Anderson, David Rotter, Cliff Shin, Timothy Bretl
A low-cost, open-source, compliant hand for enabling sensorimotor control for people with transradial amputations. EMBC (2016)
Patrick Slade, Aadeel Akhtar, Mary Nguyen, Timothy Bretl
Tact: Design and performance of an open-source, affordable, myoelectric prosthetic hand. ICRA (2015)
Andy Borum, Timothy Bretl
The free configuration space of a Kirchhoff elastic rod is path-connected. ICRA (2015)
Olivier Roussel, Andy Borum, Michel Taïx, Timothy Bretl
Manipulation planning with contacts for an extensible elastic rod by sampling on the submanifold of static equilibrium configurations. ICRA (2015)
Joseph DeGol, David Hanley, Navid Aghasadeghi, Timothy Bretl
A passive mechanism for relocating payloads with a quadrotor. IROS (2015)
Aadeel Akhtar, Brandon Boyce, Timothy Bretl
The relationship between energy, phase charge, impedance, and perceived sensation in electrotactile stimulation. HAPTICS (2014)
P. Geoffroy, O. Bordron, Nicolas Mansard, Maxime Raison, Olivier Stasse, Timothy Bretl
A two-stage suboptimal approximation for variable compliance and torque control. ECC (2014)
Navid Aghasadeghi, Timothy Bretl
Inverse optimal control for differentially flat systems with application to locomotion modeling. ICRA (2014)
Andy Borum, Dennis Matthews, Timothy Bretl
State estimation and tracking of deforming planar elastic rods. ICRA (2014)
Andy D. Borum, Timothy Bretl
Geometric optimal control for symmetry breaking cost functions. CDC (2014)
Aaron T. Becker, Cem Onyuksel, Timothy Bretl, James McLurkin
Controlling many differential-drive robots with uniform control inputs. Int. J. Robotics Res. 33 (13) (2014)
Mustafa Mukadam, Andy Borum, Timothy Bretl
Quasi-static manipulation of a planar elastic rod using multiple robotic grippers. IROS (2014)
Timothy Bretl, Zoe McCarthy
Quasi-static manipulation of a Kirchhoff elastic rod based on a geometric analysis of equilibrium configurations. Int. J. Robotics Res. 33 (1) (2014)
Olivier Roussel, Michel Taïx, Timothy Bretl
Efficient motion planning for quasi-static elastic rods using geometry neighborhood approximation. AIM (2014)
Aadeel Akhtar, James J. S. Norton, Mahsa Kasraie, Timothy Bretl
Playing checkers with your mind: An interactive multiplayer hardware game platform for brain-computer interfaces. EMBC (2014)
Aadeel Akhtar, Mary Nguyen, Logan Wan, Brandon Boyce, Patrick Slade, Timothy Bretl
Passive Mechanical Skin Stretch for Multiple Degree-of-Freedom Proprioception in a Hand Prosthesis. EuroHaptics (2) (2014)
Navid Aghasadeghi, Huihua Zhao, Levi J. Hargrove, Aaron D. Ames, Eric J. Perreault, Timothy Bretl
Learning impedance controller parameters for lower-limb prostheses. IROS (2013)
Timothy Bretl, Zoe McCarthy
Mechanics and Quasi-Static Manipulation of Planar Elastic Kinematic Chains. IEEE Trans. Robotics 29 (1) (2013)
Miles Johnson, Navid Aghasadeghi, Timothy Bretl
Inverse optimal control for deterministic continuous-time nonlinear systems. CDC (2013)
Timothy Bretl, Seth Hutchinson
Robust coverage by a mobile robot of a planar workspace. ICRA (2013)
Erik C. Johnson, James J. S. Norton, David M. Jun, Timothy Bretl, Douglas L. Jones
Sequential selection of window length for improved SSVEP-based BCI classification. EMBC (2013)
Anne-Sophie Puydupin-Jamin, Miles Johnson, Timothy Bretl
A convex approach to inverse optimal control and its application to modeling human locomotion. ICRA (2012)
Zoe McCarthy, Timothy Bretl, Seth Hutchinson
Proving path non-existence using sampling and alpha shapes. ICRA (2012)
Devin Bonnie, Salvatore Candido, Timothy Bretl, Seth Hutchinson
Modelling search with a binary sensor utilizing self-conjugacy of the exponential family. ICRA (2012)
Aaron T. Becker, Timothy Bretl
Approximate steering of a plate-ball system under bounded model perturbation using ensemble control. IROS (2012)
Timothy Bretl, Zoe McCarthy
Equilibrium Configurations of a Kirchhoff Elastic Rod under Quasi-static Manipulation. WAFR (2012)
Navid Aghasadeghi, Andrew Long, Timothy Bretl
Inverse optimal control for a hybrid dynamical system with impacts. ICRA (2012)
Abdullah Akce, James J. S. Norton, Timothy Bretl
A brain-machine interface to navigate mobile robots along human-like paths amidst obstacles. IROS (2012)
Aadeel Akhtar, Levi J. Hargrove, Timothy Bretl
Prediction of distal arm joint angles from EMG and shoulder orientation for prosthesis control. EMBC (2012)
Timothy Bretl
Minimum-Time Optimal Control of Many Robots that Move in the Same Direction at Different Speeds. IEEE Trans. Robotics 28 (2) (2012)
Zoe McCarthy, Timothy Bretl
Mechanics and manipulation of planar elastic kinematic chains. ICRA (2012)
Carlos Orduno, Aaron T. Becker, Timothy Bretl
Motion primitives for path following with a self-assembled robotic swimmer. IROS (2012)
Seth Hutchinson, Timothy Bretl
Robust optimal deployment of mobile sensor networks. ICRA (2012)
Aaron T. Becker, Timothy Bretl
Approximate Steering of a Unicycle Under Bounded Model Perturbation Using Ensemble Control. IEEE Trans. Robotics 28 (3) (2012)
Robert D. Gregg, Adam K. Tilton, Salvatore Candido, Timothy Bretl, Mark W. Spong
Control and Planning of 3-D Dynamic Walking With Asymptotically Stable Gait Primitives. IEEE Trans. Robotics 28 (6) (2012)
Aaron T. Becker, Cem Onyuksel, Timothy Bretl
Feedback control of many differential-drive robots with uniform control inputs. IROS (2012)
Dennis Matthews, Timothy Bretl
Experiments in quasi-static manipulation of a planar elastic rod. IROS (2012)
Navid Aghasadeghi, Timothy Bretl
Maximum entropy inverse reinforcement learning in continuous state spaces with path integrals. IROS (2011)
Colin Das, Aaron T. Becker, Timothy Bretl
Probably approximately correct coverage for robots with uncertainty. IROS (2011)
Cyrus Omar, Abdullah Akce, Miles Johnson, Timothy Bretl, Rui Ma, Edward L. Maclin, Martin McCormick, Todd P. Coleman
A Feedback Information-Theoretic Approach to the Design of Brain-Computer Interfaces. Int. J. Hum. Comput. Interact. 27 (1) (2011)
Abdullah Akce, Timothy Bretl
A compact representation of locally-shortest paths and its application to a human-robot interface. ICRA (2011)
Robert D. Gregg, Timothy Bretl, Mark W. Spong
Asymptotically stable gait primitives for planning dynamic bipedal locomotion in three dimensions. ICRA (2010)
Robert D. Gregg, Timothy Bretl, Mark W. Spong
A control theoretic approach to robot-assisted locomotor therapy. CDC (2010)
Aaron T. Becker, Timothy Bretl
Motion planning under bounded uncertainty using ensemble control. Robotics: Science and Systems (2010)
Abdullah Akce, Miles Johnson, Timothy Bretl
Remote teleoperation of an unmanned aircraft with a brain-machine interface: Theory and preliminary results. ICRA (2010)
Abdullah Akce, Timothy Bretl
A Probabilistic Language Model for Hand Drawings. ICPR (2010)
Irene Ruano de Pablo, Aaron T. Becker, Timothy Bretl
An optimal solution to the linear search problem for a robot with dynamics. IROS (2010)
Timothy Bretl, Gustavo Arechavaleta, Abdullah Akce, Jean-Paul Laumond
Comments on "An Optimality Principle Governing Human Walking". IEEE Trans. Robotics 26 (6) (2010)
Aaron T. Becker, Robert Sandheinrich, Timothy Bretl
Automated manipulation of spherical objects in three dimensions using a gimbaled air jet. IROS (2009)
David DeVon, Timothy Bretl
Control of many robots moving in the same direction with different speeds: A decoupling approach. ACC (2009)
Cyrus Omar, Miles Johnson, Timothy Bretl, Todd P. Coleman
Querying the user properly for high-performance brain-machine interfaces: Recursive estimation, control, and feedback information-theoretic perspectives. ICASSP (2008)
Timothy Bretl, Sanjay Lall
Testing Static Equilibrium for Legged Robots. IEEE Trans. Robotics 24 (4) (2008)

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Publication Activity (10 Years)

Top Topics

Top Venues

Timothy Bretl