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Aberration compensation with emphasis on the generalized spherical aberration components is discussed for plane-symmetric and anamorphic optical systems. A narrow field-of-view double-plane symmetric telescope objective containing…

Optics · Physics 2025-07-14 Dmitry Zhuridov

This work presents algorithms for the feedback-stabilised walking of bipedal humanoid robotic platforms, along with the underlying theoretical and sensorimotor frameworks required to achieve it. Bipedal walking is inherently complex and…

Robotics · Computer Science 2020-12-24 Philipp Allgeuer

Precision contouring control is crucial in industrial machining processes, particularly for applications such as laser and water jet cutting, where contouring accuracy directly determines product quality. This paper presents a novel control…

Systems and Control · Electrical Eng. & Systems 2026-04-14 Meng Yuan , Tianyou Chai

This paper introduces a novel pipeline designed to bring ultrasound (US) plane pose estimation closer to clinical use for more effective navigation to the standard planes (SPs) in the fetal brain. We propose a semi-supervised segmentation…

Computer Vision and Pattern Recognition · Computer Science 2024-04-11 Chiara Di Vece , Antonio Cirigliano , Meala Le Lous , Raffaele Napolitano , Anna L. David , Donald Peebles , Pierre Jannin , Francisco Vasconcelos , Danail Stoyanov

Autonomy in robot-assisted minimally invasive surgery has the potential to reduce surgeon cognitive and task load, thereby increasing procedural efficiency. However, implementing accurate autonomous control can be difficult due to poor…

Robotics · Computer Science 2026-03-18 Shuyuan Yang , Zonghe Chua

Purpose 3D acquisitions are often acquired to assess the result in orthopedic trauma surgery. With a mobile C-Arm system, these acquisitions can be performed intra-operatively. That reduces the number of required revision surgeries.…

Image and Video Processing · Electrical Eng. & Systems 2021-09-23 Celia Martin Vicario , Florian Kordon , Felix Denzinger , Jan Siad El Barbari , Maxim Privalov , Jochen Franke , Sarina Thomas , Lisa Kausch , Andreas Maier , Holger Kunze

Many tasks in robot-assisted surgery require planning and controlling manipulators' motions that interact with highly deformable objects. This study proposes a realistic, time-bounded simulator based on Position-based Dynamics (PBD)…

Vision-based bronchoscopy (VB) models require the registration of the virtual lung model with the frames from the video bronchoscopy to provide effective guidance during the biopsy. The registration can be achieved by either tracking the…

Computer Vision and Pattern Recognition · Computer Science 2022-04-27 Juan Borrego-Carazo , Carles Sánchez , David Castells-Rufas , Jordi Carrabina , Débora Gil

High-precision tiny object alignment remains a common and critical challenge for humanoid robots in real-world. To address this problem, this paper proposes a vision-based framework for precisely estimating and controlling the relative…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Jialong Xue , Wei Gao , Yu Wang , Chao Ji , Dongdong Zhao , Shi Yan , Shiwu Zhang

In recent years, MEMS inertial sensors (3D accelerometers and 3D gyroscopes) have become widely available due to their small size and low cost. Inertial sensor measurements are obtained at high sampling rates and can be integrated to obtain…

Robotics · Computer Science 2018-06-12 Manon Kok , Jeroen D. Hol , Thomas B. Schön

6D pose confidence region estimation has emerged as a critical direction, aiming to perform uncertainty quantification for assessing the reliability of estimated poses. However, current sampling-based approach suffers from critical…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Jinghao Wang , Zhang Li , Zi Wang , Banglei Guan , Yang Shang , Qifeng Yu

Quantum imaging with spatially entangled photons offers advantages such as enhanced spatial resolution, robustness against noise, and counter-intuitive phenomena, while a biphoton spatial aberration generally degrades its performance.…

Quantum Physics · Physics 2025-09-10 Yi Zheng , Zhao-Di Liu , Jian-Shun Tang , Jin-Shi Xu , Chuan-Feng Li , Guang-Can Guo

In this article we address the problem of catching objects that move at a relatively large distance from the robot, of the order of tens of times the size of the robot itself. To this purpose, we adopt casting manipulation and visual-based…

Robotics · Computer Science 2011-01-13 Adriano Fagiolini , Hitoshi Arisumi , Antonio Bicchi

We present a novel method for optimizing the posture of kinematically redundant torque-controlled robots to improve robustness during impacts. A rigid impact model is used as the basis for a configuration-dependent metric that quantifies…

Robotics · Computer Science 2026-02-24 Amr Afifi , Ahmad Gazar , Javier Alonso-Mora , Paolo Robuffo Giordano , Antonio Franchi

Bilateral postural symmetry plays a key role as a potential risk marker for autism spectrum disorder (ASD) and as a symptom of congenital muscular torticollis (CMT) in infants, but current methods of assessing symmetry require laborious…

Computer Vision and Pattern Recognition · Computer Science 2022-07-20 Xiaofei Huang , Michael Wan , Lingfei Luan , Bethany Tunik , Sarah Ostadabbas

This paper addresses the problem of thrust estimation and control for the rotors of small-sized multirotors Uncrewed Aerial Vehicles (UAVs). Accurate control of the thrust generated by each rotor during flight is one of the main challenges…

Robotics · Computer Science 2024-12-05 Davi Santos , Martin Saska , Tiago Nascimento

Most of the advanced control systems use sensor-based feedback for robust control. Tilt angle estimation is key feedback for many robotics and mechatronics applications in order to stabilize a system. Tilt angle cannot be directly measured…

Robotics · Computer Science 2024-09-02 Anandhu Suresh , Karnam Venkata Manga Raju

We propose two novel solvers for estimating the egomotion of a calibrated camera mounted to a moving vehicle from a single affine correspondence via recovering special homographies. For the first class of solvers, the sought plane is…

Computer Vision and Pattern Recognition · Computer Science 2020-08-14 Istan Gergo Gal , Daniel Barath , Levente Hajder

We develop a new approach to robust adaptive beamforming in the presence of signal steering vector errors. Since the signal steering vector is known imprecisely, its presumed (prior) value is used to find a more accurate estimate of the…

Information Theory · Computer Science 2012-05-15 Arash Khabbazibasmenj , Sergiy A. Vorobyov , Aboulnasr Hassanien

Air-bearing platforms for simulating the rotational dynamics of satellites require highly precise ground truth systems. Unfortunately, commercial motion capture systems used for this scope are complex and expensive. This paper shows a novel…

Robotics · Computer Science 2023-12-14 Fabio Ornati , Gianfranco Di Domenico , Paolo Panicucci , Francesco Topputo