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Grasping objects in cluttered scenarios is a challenging task in robotics. Performing pre-grasp actions such as pushing and shifting to scatter objects is a way to reduce clutter. Based on deep reinforcement learning, we propose a…

Robotics · Computer Science 2021-07-07 Dafa Ren , Xiaoqiang Ren , Xiaofan Wang , S. Tejaswi Digumarti , Guodong Shi

6D grasping in cluttered scenes is a longstanding problem in robotic manipulation. Open-loop manipulation pipelines may fail due to inaccurate state estimation, while most end-to-end grasping methods have not yet scaled to complex scenes…

Robotics · Computer Science 2022-01-12 Lirui Wang , Xiangyun Meng , Yu Xiang , Dieter Fox

Aiming at the traditional grasping method for manipulators based on 2D camera, when faced with the scene of gathering or covering, it can hardly perform well in unstructured scenes that appear as gathering and covering, for the reason that…

Robotics · Computer Science 2021-01-05 Peng Gang , Liao Jinhu , Guan Shangbin

Skilled robotic manipulation benefits from complex synergies between non-prehensile (e.g. pushing) and prehensile (e.g. grasping) actions: pushing can help rearrange cluttered objects to make space for arms and fingers; likewise, grasping…

Robotics · Computer Science 2018-10-02 Andy Zeng , Shuran Song , Stefan Welker , Johnny Lee , Alberto Rodriguez , Thomas Funkhouser

This paper focuses on target-oriented grasping in occluded scenes, where the target object is specified by a binary mask and the goal is to grasp the target object with as few robotic manipulations as possible. Most existing methods rely on…

Robotics · Computer Science 2024-08-21 Dayou Li , Chenkun Zhao , Shuo Yang , Ran Song , Xiaolei Li , Wei Zhang

This paper focuses on enhancing the grasping precision and generalization of manipulation policies learned via imitation learning. Diffusion-based policy learning methods have recently become the mainstream approach for robotic manipulation…

Robotics · Computer Science 2026-02-27 Enda Xiang , Haoxiang Ma , Xinzhu Ma , Zicheng Liu , Di Huang

Grasping in a densely cluttered environment is a challenging task for robots. Previous methods tried to solve this problem by actively gathering multiple views before grasp pose generation. However, they either overlooked the importance of…

Robotics · Computer Science 2025-11-18 Boshu Lei , Wen Jiang , Kostas Daniilidis

We introduce UniGraspTransformer, a universal Transformer-based network for dexterous robotic grasping that simplifies training while enhancing scalability and performance. Unlike prior methods such as UniDexGrasp++, which require complex,…

This paper aims to improve robots' versatility and adaptability by allowing them to use a large variety of end-effector tools and quickly adapt to new tools. We propose AdaGrasp, a method to learn a single grasping policy that generalizes…

Robotics · Computer Science 2021-03-16 Zhenjia Xu , Beichun Qi , Shubham Agrawal , Shuran Song

Robotic grasping in cluttered environments is often infeasible due to obstacles preventing possible grasps. Then, pre-grasping manipulation like shifting or pushing an object becomes necessary. We developed an algorithm that can learn, in…

Robotics · Computer Science 2019-07-26 Lars Berscheid , Pascal Meißner , Torsten Kröger

Reliable aerial grasping in cluttered environments remains challenging due to occlusions and collision risks. Existing aerial manipulation pipelines largely rely on centroid-based grasping and lack integration between the grasp pose…

Despite significant advancements in robotic manipulation, achieving consistent and stable grasping remains a fundamental challenge, often limiting the successful execution of complex tasks. Our analysis reveals that even state-of-the-art…

Artificial Intelligence · Computer Science 2025-03-20 Sungjae Lee , Yeonjoo Hong , Kwang In Kim

Robotic grasping faces new challenges in human-robot-interaction scenarios. We consider the task that the robot grasps a target object designated by human's language directives. The robot not only needs to locate a target based on…

Robotics · Computer Science 2023-08-02 Yuhao Lu , Yixuan Fan , Beixing Deng , Fangfu Liu , Yali Li , Shengjin Wang

Robotic grasping is a fundamental skill across all domains of robot applications. There is a large body of research for grasping objects in table-top scenarios, where finding suitable grasps is the main challenge. In this work, we are…

Robotics · Computer Science 2025-05-13 Martin Rudorfer , Jiří Hartvich , Vojtěch Vonásek

Grasping objects of different shapes and sizes - a foundational, effortless skill for humans - remains a challenging task in robotics. Although model-based approaches can predict stable grasp configurations for known object models, they…

Robotics · Computer Science 2022-11-22 Malte Mosbach , Sven Behnke

Extracting a known target object from a pile of other objects in a cluttered environment is a challenging robotic manipulation task encountered in many robotic applications. In such conditions, the target object touches or is covered by…

Robotics · Computer Science 2020-02-28 Iason Sarantopoulos , Marios Kiatos , Zoe Doulgeri , Sotiris Malassiotis

In planar grasp detection, the goal is to learn a function from an image of a scene onto a set of feasible grasp poses in $\mathrm{SE}(2)$. In this paper, we recognize that the optimal grasp function is $\mathrm{SE}(2)$-equivariant and can…

Robotics · Computer Science 2022-02-22 Xupeng Zhu , Dian Wang , Ondrej Biza , Guanang Su , Robin Walters , Robert Platt

Grasping an object when it is in an ungraspable pose is a challenging task, such as books or other large flat objects placed horizontally on a table. Inspired by human manipulation, we address this problem by pushing the object to the edge…

Robotics · Computer Science 2023-02-28 Hao Zhang , Hongzhuo Liang , Lin Cong , Jianzhi Lyu , Long Zeng , Pingfa Feng , Jianwei Zhang

Self-supervised grasp learning, i.e., learning to grasp by trial and error, has made great progress. However, it is still time-consuming to train such a model and also a challenge to apply it in practice. This work presents an accelerating…

Robotics · Computer Science 2022-05-16 Yanxu Hou , Jun Li

Grasping in dense clutter is a fundamental skill for autonomous robots. However, the crowdedness and occlusions in the cluttered scenario cause significant difficulties to generate valid grasp poses without collisions, which results in low…

Robotics · Computer Science 2022-07-26 Zhan Liu , Ziwei Wang , Sichao Huang , Jie Zhou , Jiwen Lu