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Unsupervised Optical-Sensor Extrinsic Calibration via Dual-Transformer Alignment [PDF]
SensorsAccurate extrinsic calibration between optical sensors, such as camera and LiDAR, is crucial for multimodal perception. Traditional methods based on specific calibration targets exhibit poor robustness in complex optical environments such as glare ...
Yuhao Wang +5 more
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3D Radar and Camera Co-Calibration: A flexible and Accurate Method for Target-based Extrinsic Calibration [PDF]
International Radar Conference, 2023 Advances in autonomous driving are inseparable from sensor fusion. Heterogeneous sensors are widely used for sensor fusion due to their complementary properties, with radar and camera being the most equipped sensors.
Lei Cheng, Arindam Sengupta, Siyang Cao
semanticscholar +4 more sources
IEEE Open Journal of Intelligent Transportation Systems, 2023 While automotive radars are widely used in ADAS and autonomous driving, extrinsic and temporal calibration of automotive radars with other sensors is still daunting due to the sparsity, uncertainty, and missing elevation angles of automotive radar ...
Chia-Le Lee +3 more
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Extrinsic Calibration of Thermal Camera and 3D LiDAR Sensor via Human Matching in Both Modalities during Sensor Setup Movement [PDF]
SensorsLiDAR sensors, pivotal in various fields like agriculture and robotics for tasks such as 3D object detection and map creation, are increasingly coupled with thermal cameras to harness heat information.
Farhad Dalirani, Mahmoud R. El-Sakka
doaj +2 more sources
Extrinsic LiDAR/Ground Calibration Method Using 3D Geometrical Plane-Based Estimation
Sensors, 2020 This paper details a new extrinsic calibration method for scanning laser rangefinder that is precisely focused on the geometrical ground plane-based estimation.
Mohammad Ali Zaiter +4 more
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Observability-Aware Online Multi-Lidar Extrinsic Calibration
IEEE Robotics and Automation Letters, 2023 Accurate and robust extrinsic calibration is necessary for deploying autonomous systems which need multiple sensors for perception. In this paper, we present a robust system for real-time extrinsic calibration of multiple lidars in vehicle base frame without the need for any fiducial markers or features.
Sandipan Das +3 more
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A long-range LiDAR–camera extrinsic calibration method for rail transit [PDF]
Scientific ReportsIn autonomous driving systems, sensor-based environmental perception is paramount. However, in long-distance perception for rail transit, the extrinsic calibration of Light Detection and Ranging (LiDAR) and telephoto cameras is hindered by sparse point ...
Xin Liu +7 more
doaj +2 more sources
High-precision online markerless stereo extrinsic calibration [PDF]
2016 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2016 Stereo cameras and dense stereo matching algorithms are core components for many robotic applications due to their abilities to directly obtain dense depth measurements and their robustness against changes in lighting conditions. However, the performance of dense depth estimation relies heavily on accurate stereo extrinsic calibration. In this work, we
Yonggen Ling, Shaojie Shen
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Targetless LiDAR–camera extrinsic calibration via semantic distribution alignment [PDF]
Frontiers in Robotics and AIIntroductionLiDAR–camera fusion systems are widely used in robotic localization and perception, where accurate extrinsic calibration is crucial for multi-sensor fusion. During long-term operation, extrinsic parameters can drift due to vibration and other
Xi Chen, Xi Chen, Bingyu Sun
doaj +2 more sources
Extrinsic Calibration of a Laser Galvanometric Setup and a Range Camera. [PDF]
Sensors (Basel), 2018 Currently, galvanometric scanning systems (like the one used in a scanning laser Doppler vibrometer) rely on a planar calibration procedure between a two-dimensional (2D) camera and the laser galvanometric scanning system to automatically aim a laser beam at a particular point on an object.
Sels S +3 more
europepmc +6 more sources