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Localization and mapping are core perceptual capabilities for underwater robots. Stereo cameras provide a low-cost means of directly estimating metric depth to support these tasks. However, despite recent advances in stereo depth estimation…

Sim-to-real discrepancies hinder learning-based policies from achieving high-precision tasks in the real world. While Domain Randomization (DR) is commonly used to bridge this gap, it often relies on heuristics and can lead to overly…

Robotics · Computer Science 2025-05-21 Nikhil Sobanbabu , Guanqi He , Tairan He , Yuxiang Yang , Guanya Shi

This study presents a novel methodology incorporating safety constraints into a robotic simulation during the training of deep reinforcement learning (DRL). The framework integrates specific parts of the safety requirements, such as…

Visual navigation is essential for many applications in robotics, from manipulation, through mobile robotics to automated driving. Deep reinforcement learning (DRL) provides an elegant map-free approach integrating image processing,…

Robotics · Computer Science 2020-10-22 Jonáš Kulhánek , Erik Derner , Robert Babuška

Improving the numerical method of fish autonomous swimming behavior in complex environments is of great significance to the optimization of bionic controller,the design of fish passing facilities and the study of fish behavior.This work has…

Fluid Dynamics · Physics 2023-01-25 Tao Li , Chunze Zhang , Peiyi Peng , Ji Hou , Qin Zhou , Qian Ma

Training control policies in simulation is more appealing than on real robots directly, as it allows for exploring diverse states in an efficient manner. Yet, robot simulators inevitably exhibit disparities from the real-world…

Robotics · Computer Science 2023-10-23 Peide Huang , Xilun Zhang , Ziang Cao , Shiqi Liu , Mengdi Xu , Wenhao Ding , Jonathan Francis , Bingqing Chen , Ding Zhao

Tensegrity robots, composed of rigid rods and flexible cables, exhibit high strength-to-weight ratios and significant deformations, which enable them to navigate unstructured terrains and survive harsh impacts. They are hard to control,…

Vision-Language Models (VLMs) demonstrate remarkable potential in robotic manipulation, yet challenges persist in executing complex fine manipulation tasks with high speed and precision. While excelling at high-level planning, existing VLM…

Robotics · Computer Science 2025-03-10 Qingxuan Jia , Guoqin Tang , Zeyuan Huang , Zixuan Hao , Ning Ji , Shihang , Yin , Gang Chen

Recent success in legged robot locomotion is attributed to the integration of reinforcement learning and physical simulators. However, these policies often encounter challenges when deployed in real-world environments due to sim-to-real…

Robotics · Computer Science 2025-06-04 Shaoting Zhu , Linzhan Mou , Derun Li , Baijun Ye , Runhan Huang , Hang Zhao

Learning-based robotic systems demand rigorous validation to assure reliable performance, but extensive real-world testing is often prohibitively expensive, and if conducted may still yield insufficient data for high-confidence guarantees.…

Robotics · Computer Science 2025-09-05 Rachel Luo , Heng Yang , Michael Watson , Apoorva Sharma , Sushant Veer , Edward Schmerling , Marco Pavone

This study investigates a method to guide and control fish schools using virtual fish trained with reinforcement learning. We utilize 2D virtual fish displayed on a screen to overcome technical challenges such as durability and movement…

Robotics · Computer Science 2026-03-18 Yusuke Nishii , Hiroaki Kawashima

Visual servoing techniques guide robotic motion using visual information to accomplish manipulation tasks, requiring high precision and robustness against noise. Traditional methods often require prior knowledge and are susceptible to…

Robotics · Computer Science 2026-02-24 Haoyu Zhang , Yang Liu , Yimu Jiang , Weiyang Lin , Chao Ye

Underwater environments pose significant challenges for visual Simultaneous Localization and Mapping (SLAM) systems due to limited visibility, inadequate illumination, and sporadic loss of structural features in images. Addressing these…

Robotics · Computer Science 2025-03-17 Shida Xu , Kaicheng Zhang , Sen Wang

Reliable simulation evaluation of robot manipulation policies serves as a high-fidelity proxy for real-world performance. Although existing benchmarks cover a wide range of task categories, they lack visual realism, creating a large domain…

Robotics · Computer Science 2026-05-08 Yixin Zhu , Zixiong Wang , Jian Yang , Jin Xie , Jingyi Yu , Jiayuan Gu , Beibei Wang

Accurately manipulating articulated objects is a challenging yet important task for real robot applications. In this paper, we present a novel framework called Sim2Real$^2$ to enable the robot to manipulate an unseen articulated object to…

Robotics · Computer Science 2023-02-22 Liqian Ma , Jiaojiao Meng , Shuntao Liu , Weihang Chen , Jing Xu , Rui Chen

We have previously shown how to socially integrate a fish robot into a group of zebrafish thanks to biomimetic behavioural models. The models have to be calibrated on experimental data to present correct behavioural features. This…

Neural and Evolutionary Computing · Computer Science 2019-02-12 Leo Cazenille , Yohann Chemtob , Frank Bonnet , Alexey Gribovskiy , Francesco Mondada , Nicolas Bredeche , Jose Halloy

Accurate material recognition is a fundamental capability for intelligent perception systems to interact safely and effectively with the physical world. For instance, distinguishing visually similar objects like glass and plastic cups is…

Signal Processing · Electrical Eng. & Systems 2026-04-16 Jiangyou Zhu , He Chen

Vision-and-language navigation (VLN) stands as a key research problem of Embodied AI, aiming at enabling agents to navigate in unseen environments following linguistic instructions. In this field, generalization is a long-standing…

Computer Vision and Pattern Recognition · Computer Science 2024-07-02 Jiazhao Zhang , Kunyu Wang , Rongtao Xu , Gengze Zhou , Yicong Hong , Xiaomeng Fang , Qi Wu , Zhizheng Zhang , He Wang

Reinforcement Learning (RL) is a promising solution, allowing Unmanned Underwater Vehicles (UUVs) to learn optimal behaviors through trial and error. However, existing simulators lack efficient integration with RL methods, limiting training…

Robotics · Computer Science 2024-10-21 Shuguang Chu , Zebin Huang , Mingwei Lin , Dejun Li , Ignacio Carlucho

Recent advances in deep reinforcement learning (RL) based techniques combined with training in simulation have offered a new approach to developing robust controllers for legged robots. However, the application of such approaches to real…

Robotics · Computer Science 2023-08-08 Rohan Pratap Singh , Zhaoming Xie , Pierre Gergondet , Fumio Kanehiro