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Camera calibration is a fundamental prerequisite for reliable geometric perception, yet classical approaches rely on controlled acquisition setups that are impractical for in-the-wild imagery. Recent learning-based methods have shown…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Boying Li , Cheng Zhang , Weirong Chen , Daniel Cremers , Ian Reid , Hamid Rezatofighi

The ability to create an accurate three-dimensional reconstruction of a captured scene draws attention to the principles of light fields. This paper presents an approach for light field camera calibration and rectification, based on…

Computer Vision and Pattern Recognition · Computer Science 2021-06-14 Yuriy Anisimov , Gerd Reis , Didier Stricker

The proliferation of Deep Neural Networks has resulted in machine learning systems becoming increasingly more present in various real-world applications. Consequently, there is a growing demand for highly reliable models in many domains,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Pedro Conde , Rui L. Lopes , Cristiano Premebida

Illuminating a scene with artificial light is a prerequisite for seeing in dark environments. However, nonuniform and dynamic illumination can deteriorate or even break computer vision approaches, for instance when operating a robot with…

Computer Vision and Pattern Recognition · Computer Science 2020-06-30 Yifan Song , Furkan Elibol , Mengkun She , David Nakath , Kevin Köser

In a multi-sensor fusion system composed of cameras and LiDAR, precise extrinsic calibration contributes to the system's long-term stability and accurate perception of the environment. However, methods based on extracting and registering…

Robotics · Computer Science 2024-07-29 Tianle Zeng , Dengke He , Feifan Yan , Meixi He

Camera calibration is a crucial step in robotics and computer vision. Accurate camera parameters are necessary to achieve robust applications. Nowadays, camera calibration process consists of adjusting a set of data to a pin-hole model,…

Computer Vision and Pattern Recognition · Computer Science 2024-02-08 Carlos Ricolfe-Viala , Alicia Esparza

We examine 3D reconstruction of architectural scenes in unordered sets of uncalibrated images. We introduce a linear method to self-calibrate and find the metric reconstruction of a camera pair. We assume unknown and different focal lengths…

Computer Vision and Pattern Recognition · Computer Science 2019-07-01 Nikos Melanitis , Petros Maragos

Self-diagnosis and self-repair are some of the key challenges in deploying robotic platforms for long-term real-world applications. One of the issues that can occur to a robot is miscalibration of its sensors due to aging, environmental…

Robotics · Computer Science 2020-05-26 Andrei Cramariuc , Aleksandar Petrov , Rohit Suri , Mayank Mittal , Roland Siegwart , Cesar Cadena

In this work, we present an effective multi-view approach to closed-loop end-to-end learning of precise manipulation tasks that are 3D in nature. Our method learns to accomplish these tasks using multiple statically placed but uncalibrated…

Robotics · Computer Science 2021-04-02 Iretiayo Akinola , Jacob Varley , Dmitry Kalashnikov

Geometric calibration of cameras and projectors is an essential step that must be performed before any imaging system can be used. There are many well-known geometric calibration methods for calibrating systems comprised of multiple…

Computer Vision and Pattern Recognition · Computer Science 2024-10-25 Tomislav Petkovic , Simone Gasparini , Tomislav Pribanic

A reliable estimation of 3D parameters is a must for several applications like planning and control. Included in the latter is the Image-Based Visual Servoing, whose control scheme depends directly on 3D parameters e.g. depth of points, and…

Robotics · Computer Science 2018-12-13 André Mateus , Omar Tahri , Pedro Miraldo

Accurate camera-to-lidar calibration is a requirement for sensor data fusion in many 3D perception tasks. In this paper, we present SceneCalib, a novel method for simultaneous self-calibration of extrinsic and intrinsic parameters in a…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Ayon Sen , Gang Pan , Anton Mitrokhin , Ashraful Islam

3D LiDAR scanners are playing an increasingly important role in autonomous driving as they can generate depth information of the environment. However, creating large 3D LiDAR point cloud datasets with point-level labels requires a…

Computer Vision and Pattern Recognition · Computer Science 2018-04-03 Xiangyu Yue , Bichen Wu , Sanjit A. Seshia , Kurt Keutzer , Alberto L. Sangiovanni-Vincentelli

The reconstruction of a scene via a stereo-camera system is a two-steps process, where at first images from different cameras are matched to identify the set of point-to-point correspondences that then will actually be reconstructed in the…

Computer Vision and Pattern Recognition · Computer Science 2021-01-15 Riccardo Beschi , Xiao Feng , Stefania Melillo , Leonardo Parisi , Lorena Postiglione

Nearly all 3D displays need calibration for correct rendering. More often than not, the optical elements in a 3D display are misaligned from the designed parameter setting. As a result, 3D magic does not perform well as intended. The…

Computer Vision and Pattern Recognition · Computer Science 2017-04-26 Hyoseok Hwang , Hyun Sung Chang , Dongkyung Nam , In So Kweon

Despite the widespread deployment of outdoor cameras, their potential for automated analysis remains largely untapped due, in part, to calibration challenges. The absence of precise camera calibration data, including intrinsic and extrinsic…

Computer Vision and Pattern Recognition · Computer Science 2023-11-09 Khiem Vuong , Robert Tamburo , Srinivasa G. Narasimhan

Single image camera calibration is the task of estimating the camera parameters from a single input image, such as the vanishing points, focal length, and horizon line. In this work, we propose Camera calibration TRansformer with…

Computer Vision and Pattern Recognition · Computer Science 2021-09-07 Jinwoo Lee , Hyunsung Go , Hyunjoon Lee , Sunghyun Cho , Minhyuk Sung , Junho Kim

In the recent literature on machine learning and decision making, calibration has emerged as a desirable and widely-studied statistical property of the outputs of binary prediction models. However, the algorithmic aspects of measuring model…

Machine Learning · Computer Science 2024-06-24 Lunjia Hu , Arun Jambulapati , Kevin Tian , Chutong Yang

Calibration in a multi camera network has widely been studied for over several years starting from the earlier days of photogrammetry. Many authors have presented several calibration algorithms with their relative advantages and…

Computer Vision and Pattern Recognition · Computer Science 2010-11-03 Ayan Chaudhury , Abhishek Gupta , Sumita Manna , Subhadeep Mukherjee , Amlan Chakrabarti

The accurate and robust calibration result of sensors is considered as an important building block to the follow-up research in the autonomous driving and robotics domain. The current works involving extrinsic calibration between 3D LiDARs…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Su Wang , Shini Zhang , Xuchong Qiu