8 papers
Observability Analysis of Joint Steering and Extrinsic Calibration
Subodh Mishra
This technical report studies the local weak observability of a planar bicycle-model vehicle when vehicle pose, planar LiDAR extrinsic calibration, and steering-angle bias are esti…
Online Joint Calibration of Steering Offset and Planar LiDAR Extrinsics for Wheeled Mobile Robots
Subodh Mishra, Arindam Dhar, Suprotim Majumdar +1
Accurate steering sensing and LiDAR-to-vehicle extrinsics are crucial for reliable path tracking in warehouse mobile robots (WMRs); miscalibration often leads to snaking, weaving,…
Look Both Ways: Bidirectional Visual Sensing for Automatic Multi-Camera Registration
Subodh Mishra, Sushruth Nagesh, Sagar Manglani +3
This work describes the automatic registration of a large network (approximately 40) of fixed, ceiling-mounted environment cameras spread over a large area (approximately 800 squar…
Extrinsic Calibration of LiDAR, IMU and Camera
Subodh Mishra, Srikanth Saripalli
In this work we present a novel method to jointly calibrate a sensor suite consisting a 3D-LiDAR, Inertial Measurement Unit (IMU) and Camera under an Extended Kalman Filter (EKF) f…
Localization of a Smart Infrastructure Fisheye Camera in a Prior Map for Autonomous Vehicles
Subodh Mishra, Armin Parchami, Enrique Corona +4
This work presents a technique for localization of a smart infrastructure node, consisting of a fisheye camera, in a prior map. These cameras can detect objects that are outside th…
Target-free Extrinsic Calibration of a 3D-Lidar and an IMU
Subodh Mishra, Gaurav Pandey, Srikanth Saripalli
This work presents a novel target-free extrinsic calibration algorithm for a 3D Lidar and an IMU pair using an Extended Kalman Filter (EKF) which exploits the \textit{motion based…
Experimental Evaluation of 3D-LIDAR Camera Extrinsic Calibration
Subodh Mishra, Philip R. Osteen, Gaurav Pandey +1
In this paper we perform an experimental comparison of three different target based 3D-LIDAR camera calibration algorithms. We briefly elucidate the mathematical background behind…
Extrinsic Calibration of a 3D-LIDAR and a Camera
Subodh Mishra, Gaurav Pandey, Srikanth Saripalli
This work presents an extrinsic parameter estimation algorithm between a 3D LIDAR and a Projective Camera using a marker-less planar target, by exploiting Planar Surface Point to P…