Searched for: author:"Lei, Q."
(1 - 10 of 10)
document
Lei, Q. (author)
According to the report by the United Nations in 2015, the global population of older persons aged 60 years or over is predicted to grow to 1.4 billion by 2030. A rapidly aging population poses a challenging problem for human beings, i.e. supply shortage of working-age people. To solve this problem, increasing research efforts are poured into...
doctoral thesis 2018
document
Lei, Q. (author), Chen, G. (author), Meijer, Jonathan (author), Wisse, M. (author)
Increasing grasping efficiency is very important for the robots to grasp unknown objects especially subjected to unfamiliar environments. To achieve this, a new algorithm is proposed based on the C-shape configuration. Specifically, the geometric model of the used under-actuated gripper is approximated as a C-shape. To obtain an appropriate...
journal article 2018
document
Lei, Q. (author), Meijer, Jonathan (author), Wisse, M. (author)
This paper identifies high-performing Open Motion Planning Library (OMPL) planners for grasp execution and simultaneously presents useful benchmark data. Four grasp executions were defined using a UR5 manipulator. The performance was measured by means of solved runs, computing time and path length. Based on the results, planners are...
conference paper 2017
document
Meijer, Jonathan (author), Lei, Q. (author), Wisse, M. (author)
This paper identifies high-performing Open Motion Planning Library (OMPL) planners for grasp execution and simultaneously presents useful benchmark data. Four grasp executions were defined using a UR5 manipulator. The performance was measured by means of solved runs, computing time and path length. Based on the results, planners are...
conference paper 2017
document
Lei, Q. (author), Wisse, M. (author)
Grasping of unknown objects with neither appearance data nor object models given in advance is very important for robots that work in an unfamiliar environment. The goal of this paper is to quickly synthesize an executable grasp for one unknown object by using cylinder searching on a single point cloud. Specifically, a 3D camera is first used to...
conference paper 2017
document
Meijer, Jonathan (author), Lei, Q. (author), Wisse, M. (author)
This paper identifies high performing motion planners among three manipulators when carrying out grasp executions. Simultaneously, this paper presents useful benchmarking data. Sampling-based motion planners of OMPL available for use in MoveIt! are compared by performing several grasping-related motion planning problems. The performance of the...
conference paper 2017
document
Lei, Q. (author), Chen, G. (author), Wisse, M. (author)
Fast grasping of unknown objects has crucial impact on the efficiency of robot manipulation especially subjected to unfamiliar environments. In order to accelerate grasping speed of unknown objects, principal component analysis is utilized to direct the grasping process. In particular, a single-view partial point cloud is constructed and...
journal article 2017
document
Lei, Q. (author), Wisse, M. (author)
The current research trends of object grasping can be summarized as caging grasping and force closure grasping. The motivation of this paper is to combine the advantage of caging grasping and force closure grasping to enable under-actuated grippers like the Lacquey gripper and the parallel grippers like the PR2 gripper to quickly grasp the...
conference paper 2016
document
Lei, Q. (author), Wisse, M. (author)
Reducing the grasp candidates for unknown object grasping while maintaining grasp stability is the goal of this paper. In this paper, we propose an efficient and straight forward unknown object grasping method by using concavities of the unknown objects to significantly reduce the grasp candidates. Shortest path concavity is first employed to...
conference paper 2016
document
Lei, Q. (author), Spaans, M. (author)
conference paper 2009
Searched for: author:"Lei, Q."
(1 - 10 of 10)