I received an MASc (=MSc) in 2021. In 2019, was the deputy lead of aUToronto, U of T’s self driving car team, for the second stage of the SAE AutoDrive Challenge. Before joining UTIAS, I completed my undergrad in Engineering Science(Robotics) at the University of Toronto.
By the way, my headshot has been cloaked by Fawkes.
Robots need to predict and react to human motions to navigate through a crowd without collisions. Many existing methods decouple prediction from planning, which does not account for the interaction between robot and human motions and can lead to the robot getting stuck. We propose SICNav, a Model Predictive Control (MPC) method that jointly solves for robot motion and predicted crowd motion in closed-loop. We model each human in the crowd to be following an Optimal Reciprocal Collision Avoidance (ORCA) scheme and embed that model as a constraint in the robot’s local planner, resulting in a bilevel nonlinear MPC optimization problem. We use a KKT-reformulation to cast the bilevel problem as a single level and use a nonlinear solver to optimize. Our MPC method can influence pedestrian motion while explicitly satisfying safety constraints in a single-robot multi-human environment. We analyze the performance of SICNav in two simulation environments and indoor experiments with a real robot to demonstrate safe robot motion that can influence the surrounding humans. We also validate the trajectory forecasting performance of ORCA on a human trajectory dataset.
@article{samavi2024sicnav,author={Samavi, Sepehr and Han, James R. and Shkurti, Florian and Schoellig, Angela P.},journal={IEEE Transactions on Robotics (T-RO), accepted for publication},title={SICNav: Safe and Interactive Crowd Navigation using Model Predictive Control and Bilevel Optimization},year={2024},url={https://arxiv.org/abs/2310.10982},}
