Semalign: Annotation-free camera-lidar calibration with semantic alignment loss

Z Liu, H Tang, S Zhu, S Han - 2021 IEEE/RSJ International …, 2021 - ieeexplore.ieee.org
Multi-sensor solution has been widely adopted in real-world robotics systems (eg, self-
driving vehicles) due to its better robustness. However, its performance is highly dependent …

Online camera-lidar calibration with sensor semantic information

Y Zhu, C Li, Y Zhang - 2020 IEEE International Conference on …, 2020 - ieeexplore.ieee.org
As a crucial step of sensor data fusion, sensor calibration plays a vital role in many cutting-
edge machine vision applications, such as autonomous vehicles and AR/VR. Existing …

Semcal: Semantic lidar-camera calibration using neural mutual information estimator

P Jiang, P Osteen, S Saripalli - 2021 IEEE International …, 2021 - ieeexplore.ieee.org
This paper proposes SemCal: an automatic, tar-getless, extrinsic calibration algorithm for a
LiDAR and camera system using semantic information. We leverage a neural information …

Calibrcnn: Calibrating camera and lidar by recurrent convolutional neural network and geometric constraints

J Shi, Z Zhu, J Zhang, R Liu, Z Wang… - 2020 IEEE/RSJ …, 2020 - ieeexplore.ieee.org
In this paper, we present Calibration Recurrent Convolutional Neural Network (CalibRCNN)
to infer a 6 degrees of freedom (DOF) rigid body transformation between 3D LiDAR and 2D …

RGGNet: Tolerance aware LiDAR-camera online calibration with geometric deep learning and generative model

K Yuan, Z Guo, ZJ Wang - IEEE Robotics and Automation …, 2020 - ieeexplore.ieee.org
Accurate LiDAR-camera online calibration is critical for modern autonomous vehicles and
robot platforms. Dominant methods heavily rely on hand-crafted features, which are not …

Unical: a single-branch transformer-based model for camera-to-lidar calibration and validation

M Cocheteux, A Low, M Bruehlmeier - arXiv preprint arXiv:2304.09715, 2023 - arxiv.org
We introduce a novel architecture, UniCal, for Camera-to-LiDAR (C2L) extrinsic calibration
which leverages self-attention mechanisms through a Transformer-based backbone network …

Automatic Target-Less Camera-LiDAR Calibration From Motion and Deep Point Correspondences

K Petek, N Vödisch, J Meyer, D Cattaneo… - arXiv preprint arXiv …, 2024 - arxiv.org
Sensor setups of robotic platforms commonly include both camera and LiDAR as they
provide complementary information. However, fusing these two modalities typically requires …

Calibformer: A transformer-based automatic lidar-camera calibration network

Y Xiao, Y Li, C Meng, X Li, Y Zhang - arXiv preprint arXiv:2311.15241, 2023 - arxiv.org
The fusion of LiDARs and cameras has been increasingly adopted in autonomous driving
for perception tasks. The performance of such fusion-based algorithms largely depends on …

Causal calibration: iteratively calibrating LiDAR and camera by considering causality and geometry

R Liu, J Shi, H Zhang, J Zhang, B Sun - Complex & Intelligent Systems, 2023 - Springer
The external calibration between 3D LiDAR and 2D camera is an extremely important step
towards multimodal fusion for robot perception. However, its accuracy is still unsatisfactory …

ATOP: An attention-to-optimization approach for automatic LiDAR-camera calibration via cross-modal object matching

Y Sun, J Li, Y Wang, X Xu, X Yang… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Due to the difference of data modalities, it'sa very challenging task to find the feature
correspondences between 2D and 3D data in LiDAR-Camera calibration. In existing works …