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Calibration of multi-camera systems, i.e. determining the relative poses between the cameras, is a prerequisite for many tasks in computer vision and robotics. Camera calibration is typically achieved using offline methods that use…

Computer Vision and Pattern Recognition · Computer Science 2022-09-16 Bastian Pätzold , Simon Bultmann , Sven Behnke

Time of flight based Non-line-of-sight (NLOS) imaging approaches require precise calibration of illumination and detector positions on the visible scene to produce reasonable results. If this calibration error is sufficiently high,…

Image and Video Processing · Electrical Eng. & Systems 2021-05-25 Subhash Chandra Sadhu , Abhishek Singh , Tomohiro Maeda , Tristan Swedish , Ryan Kim , Lagnojita Sinha , Ramesh Raskar

Camera calibration is a crucial prerequisite in many applications of computer vision. In this paper, a new, geometry-based camera calibration technique is proposed, which resolves two main issues associated with the widely used Zhang's…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Jen-Hui Chuang , Chih-Hui Ho , Ardian Umam , HsinYi Chen , Mu-Tien Lu , Jenq-Neng Hwang , Tai-An Chen

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…

Robotics · Computer Science 2023-09-14 Sandipan Das , Ludvig af Klinteberg , Maurice Fallon , Saikat Chatterjee

Typical multi-task learning (MTL) methods rely on architectural adjustments and a large trainable parameter set to jointly optimize over several tasks. However, when the number of tasks increases so do the complexity of the architectural…

Computer Vision and Pattern Recognition · Computer Science 2019-03-29 Gjorgji Strezoski , Nanne van Noord , Marcel Worring

Tuning fork experiments at the undergraduate level usually only demonstrate a tuning fork's linear resonance. In this paper, we introduce an experiment that can be used to measure the nonlinear tuning curve of a regular tuning fork. Using…

Applied Physics · Physics 2024-06-19 Lintao Xiao , Chenyu Bao , Qiuhan Jia , Haoyang Wu , Huijun Zhou , Sihui Wang

High dimensional data analysis for exploration and discovery includes three fundamental tasks: dimensionality reduction, clustering, and visualization. When the three associated tasks are done separately, as is often the case thus far,…

Machine Learning · Computer Science 2020-12-02 Stan Z. Li , Lirong Wu , Zelin Zang

Self-calibration of camera intrinsics and radial distortion has a long history of research in the computer vision community. However, it remains rare to see real applications of such techniques to modern Simultaneous Localization And…

Computer Vision and Pattern Recognition · Computer Science 2019-08-01 Bingbing Zhuang , Quoc-Huy Tran , Pan Ji , Gim Hee Lee , Loong Fah Cheong , Manmohan Chandraker

Accurate LiDAR-camera extrinsic calibration is a precondition for many multi-sensor systems in mobile robots. Most calibration methods rely on laborious manual operations and calibration targets. While working online, the calibration…

Robotics · Computer Science 2022-03-18 Xin Jing , Xiaqing Ding , Rong Xiong , Huanjun Deng , Yue Wang

The field of robotic Flexible Endoscopes (FEs) has progressed significantly, offering a promising solution to reduce patient discomfort. However, the limited autonomy of most robotic FEs results in non-intuitive and challenging manoeuvres,…

Conventional multi-projector calibration requires projecting and capturing structured light patterns for each projector sequentially, causing calibration time and effort to increase linearly with the number of projectors. This scalability…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Takumi Kawano , Kohei Miura , Daisuke Iwai

Representation-based multi-task learning (MTL) improves efficiency by learning a shared structure across tasks, but its practical application is often hindered by contamination, outliers, or adversarial tasks. Most existing methods and…

Machine Learning · Statistics 2025-09-09 Yian Huang , Yang Feng , Zhiliang Ying

Deep Reinforcement Learning (DRL) emerges as a prime solution for Unmanned Aerial Vehicle (UAV) trajectory planning, offering proficiency in navigating high-dimensional spaces, adaptability to dynamic environments, and making sequential…

Signal Processing · Electrical Eng. & Systems 2024-05-17 Chenrui Sun , Gianluca Fontanesi , Swarna Bindu Chetty , Xuanyu Liang , Berk Canberk , Hamed Ahmadi

We propose a robust calibration pipeline that optimises the selection of calibration samples for the estimation of calibration parameters that fit the entire scene. We minimise user error by automating the data selection process according…

Computer Vision and Pattern Recognition · Computer Science 2021-09-23 Darren Tsai , Stewart Worrall , Mao Shan , Anton Lohr , Eduardo Nebot

Accurate LiDAR-Camera (LC) calibration is challenging but crucial for autonomous systems and robotics. In this paper, we propose two single-shot and target-less algorithms to estimate the calibration parameters between LiDAR and camera…

Robotics · Computer Science 2026-01-05 Yanyu Zhang , Jie Xu , Wei Ren

Multiple LiDARs have progressively emerged on autonomous vehicles for rendering a wide field of view and dense measurements. However, the lack of precise calibration negatively affects their potential applications in localization and…

Robotics · Computer Science 2019-05-14 Jianhao Jiao , Yang Yu , Qinghai Liao , Haoyang Ye , Ming Liu

Reliability quantification of deep reinforcement learning (DRL)-based control is a significant challenge for the practical application of artificial intelligence (AI) in safety-critical systems. This study proposes a method for quantifying…

Systems and Control · Electrical Eng. & Systems 2024-07-22 Hitoshi Yoshioka , Hirotada Hashimoto

We describe a calibration setup for the transresistance of low-current amplifiers, based on the capacitance-charging method. The calibration can be performed in the current range of typical interest for electron counting experiments. The…

Instrumentation and Detectors · Physics 2016-10-18 Ilaria Finardi , Luca Callegaro

A calibration method aimed for the differential nonlinearity (DNL) error of the Low Energy X-ray Instrument (LE) onboard the Hard X-ray Modulation Telescope (HXMT) is presented, which is independent with electronic systems used as testing…

High-dimensional prediction typically comprises two steps: variable selection and subsequent least-squares refitting on the selected variables. However, the standard variable selection procedures, such as the lasso, hinge on tuning…

Methodology · Statistics 2017-06-07 Didier Chételat , Johannes Lederer , Joseph Salmon
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