Jeffrey Mahler

ORCID: 0000-0003-3204-3024
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About
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Research Areas
  • Robot Manipulation and Learning
  • Soft Robotics and Applications
  • Reinforcement Learning in Robotics
  • Robotic Mechanisms and Dynamics
  • Modular Robots and Swarm Intelligence
  • Advanced Neural Network Applications
  • Muscle activation and electromyography studies
  • Topological and Geometric Data Analysis
  • Cell Image Analysis Techniques
  • Manufacturing Process and Optimization
  • Robotics and Sensor-Based Localization
  • Assisted Reproductive Technology and Twin Pregnancy
  • Family Dynamics and Relationships
  • Hand Gesture Recognition Systems
  • Image and Object Detection Techniques
  • Teleoperation and Haptic Systems
  • Child Welfare and Adoption
  • Advanced Vision and Imaging
  • Adversarial Robustness in Machine Learning
  • Quality and Safety in Healthcare
  • Anatomy and Medical Technology
  • Advanced X-ray and CT Imaging
  • Robotic Path Planning Algorithms
  • Adhesion, Friction, and Surface Interactions
  • Advanced Chemical Physics Studies

University of California, Berkeley
2014-2022

Berkeley College
2022

Intel (United States)
2020

Berkeley Systems (United States)
2019-2020

To reduce data collection time for deep learning of robust robotic grasp plans, we explore training from a synthetic dataset 6.7 million point clouds, grasps, and analytic metrics generated thousands 3D models Dex-Net 1.0 in randomized poses on table.We use the resulting dataset, 2.0, to train Grasp Quality Convolutional Neural Network (GQ-CNN) model that rapidly predicts probability success grasps depth images, where are specified as planar position, angle, gripper relative an RGB-D...

10.15607/rss.2017.xiii.058 preprint EN 2017-07-12

Universal picking (UP), or reliable robot grasping of a diverse range novel objects from heaps, is grand challenge for e-commerce order fulfillment, manufacturing, inspection, and home service robots. Optimizing the rate, reliability, UP difficult due to inherent uncertainty in sensing, control, contact physics. This paper explores "ambidextrous" grasping, where two more heterogeneous grippers are used. We present Dexterity Network (Dex-Net) 4.0, substantial extension previous versions...

10.1126/scirobotics.aau4984 article EN Science Robotics 2019-01-17

This paper presents the Dexterity Network (Dex-Net) 1.0, a dataset of 3D object models and sampling-based planning algorithm to explore how Cloud Robotics can be used for robust grasp planning. The uses Multi- Armed Bandit model with correlated rewards leverage prior grasps in growing that currently includes over 10,000 unique 2.5 million parallel-jaw grasps. Each an estimate probability force closure under uncertainty gripper pose friction. Dex-Net 1.0 Multi-View Convolutional Neural...

10.1109/icra.2016.7487342 article EN 2016-05-01

Vacuum-based end effectors are widely used in industry and often preferred over parallel-jaw multifinger grippers due to their ability lift objects with a single point of contact. Suction grasp planners target planar surfaces on clouds near the estimated centroid an object. In this paper, we propose compliant suction contact model that computes quality seal between cup local surface measure resist external gravity wrench. To characterize grasps, estimate robustness perturbations end-effector...

10.1109/icra.2018.8460887 article EN 2018-05-01

To reduce data collection time for deep learning of robust robotic grasp plans, we explore training from a synthetic dataset 6.7 million point clouds, grasps, and analytic metrics generated thousands 3D models Dex-Net 1.0 in randomized poses on table. We use the resulting dataset, 2.0, to train Grasp Quality Convolutional Neural Network (GQ-CNN) model that rapidly predicts probability success grasps depth images, where are specified as planar position, angle, gripper relative an RGB-D...

10.48550/arxiv.1703.09312 preprint EN other-oa arXiv (Cornell University) 2017-01-01

The ability to segment unknown objects in depth images has potential enhance robot skills grasping and object tracking. Recent computer vision research demonstrated that Mask R-CNN can be trained specific categories of RGB when massive hand-labeled datasets are available. As generating these is time-consuming, we instead train with synthetic images. Many robots now use sensors, recent results suggest training on data transfer successfully the real world. We present a method for automated...

10.1109/icra.2019.8793744 article EN 2022 International Conference on Robotics and Automation (ICRA) 2019-05-01

Rapid and reliable robot grasping for a diverse set of objects has applications from warehouse automation to home decluttering. One promising approach is learn deep policies synthetic training datasets point clouds, grasps, rewards sampled using analytic models with stochastic noise domain randomization. In this letter, we explore how the distribution examples affects rate reliability learned policy. We propose data sampling that combines grasps policy action guiding samples robust...

10.1109/lra.2019.2895878 article EN IEEE Robotics and Automation Letters 2019-01-29

Autonomous robot execution of surgical sub-tasks has the potential to reduce surgeon fatigue and facilitate supervised tele-surgery. This paper considers sub-task debridement: removing dead or damaged tissue fragments allow remaining healthy heal. We present an autonomous multilateral debridement system using Raven, open-architecture with two cable-driven 7 DOF arms. Our combines stereo vision for 3D perception trajopt, optimization-based motion planner, model predictive control (MPC)....

10.1109/icra.2014.6907040 article EN 2014-05-01

Precise control of industrial automation systems with non-linear kinematics due to joint elasticity, variation in cable tensioning, or backlash is challenging; especially that can only be controlled through an interface imprecise internal kinematic model. Cable-driven Robotic Surgical Assistants (RSAs) are one example such system, as they designed for master-slave teleoperation. We consider the problem learning a function modify commands inaccurate executing modified command on system...

10.1109/coase.2014.6899377 article EN IEEE International Conference on Automation Science and Engineering (CASE) 2014-08-01

The school-based Children's Support Group procedure teaches skills to cope with divorce-related events and provides strategies for mastering disrupted developmental tasks. Ss were 103 3rd-through 5th-grade children of separated or divorced parents who assigned 1 3 treatment groups: support; support skill building; support, building, transfer, parent training procedures; no-treatment control. Twenty-six from intact homes served as nonstressed controls. two skill-building conditions yielded...

10.1037//0022-006x.62.1.147 article EN Journal of Consulting and Clinical Psychology 1994-01-01

Computing grasps for an object is challenging when the geometry not known precisely. In this paper, we explore use of Gaussian process implicit surfaces (GPISs) to represent shape uncertainty from RGBD point cloud observations objects. We study GPIS representations select on previously unknown objects, measuring grasp quality by probability force closure. Our main contribution GP-GPIS-OPT, algorithm computing parallel-jaw grippers 2D representations. Specifically, our method optimizes...

10.1109/icra.2015.7139882 article EN 2015-05-01

To facilitate automated bin picking when parts cannot be grasped, pushing actions have the potential to separate objects and move them away from walls corners. In context of Dexterity Network (Dex-Net) robot grasping framework, we present two novel push policies based on targeting free space diffusing clusters, compare three earlier using four metrics. We evaluate these in simulation Bullet Physics a dataset over 1,000 synthetic scenarios. Pushing outcomes are evaluated by comparing quality...

10.1109/coase.2018.8560406 article EN 2022 IEEE 18th International Conference on Automation Science and Engineering (CASE) 2018-08-01

Motivated by recent advances in Deep Learning for robot control, this paper considers two learning algorithms terms of how they acquire demonstrations from fallible human supervisors. Human-Centric (HC) sampling is a standard supervised algorithm, where supervisor demonstrates the task teleoperating to provide trajectories consisting state-control pairs. Robot-Centric (RC) an increasingly popular alternative used such as DAgger, observes execute learned policy and provides corrective control...

10.1109/icra.2017.7989046 article EN 2017-05-01

Online learning from demonstration algorithms such as DAgger can learn policies for problems where the system dynamics and cost function are unknown. However they impose a burden on supervisors to respond queries each time robot encounters new states while executing its current best policy. The MMD-IL algorithm reduces supervisor by filtering with insufficient discrepancy in distribution maintaining multiple policies. We introduce SHIV (Svm-based reduction Human InterVention), which...

10.1109/icra.2016.7487167 article EN 2016-05-01

Parallel-jaw robot grippers can grasp almost any object and are ubiquitous in industry. Although the shape, texture, compliance of gripper jaw surfaces affect robustness, all commercially available provide a pair rectangular, planar, rigid surfaces. Practitioners often modify these with variety ad-hoc methods such as adding rubber caps and/or wrapping textured tape. This paper explores data-driven optimization over design space based on using rapid prototyping. In total, 37 surface...

10.1109/icra.2017.7989330 article EN 2017-05-01

Caging grasps are valuable as they can be robust to bounded variations in object shape and pose, do not depend on friction, enable transport of an without full immobilization. Complete caging is useful but may necessary cases where forces such gravity present. This letter extends theory by defining energy-bounded cages with respect energy field gravity. also introduces energy-bounded-cage-analysis-2-D (EBCA-2-D), a sampling-based algorithm for planar analysis that takes input function over...

10.1109/lra.2016.2519145 article EN IEEE Robotics and Automation Letters 2016-01-01

In support of Cloud Robotics, Robotics and Automation as a Service (RAaaS) frameworks have the potential to reduce complexity software development, simplify installation maintenance, facilitate data sharing for machine learning. this proof-of-concept paper, we describe Berkeley (Brass), RAaaS prototype that allows robots access remote server hosts robust grasp-planning system (Dex-Net 1.0) maintains on hundreds candidate grasps thousands 3D object meshes uses perturbation sampling estimate...

10.1109/icra.2017.7989192 article EN 2017-05-01

Learning-based approaches to robust robot grasp planning can a wide variety of objects, but may be prone failure on some objects. Inspired by recent results in computer vision, we define class "adversarial objects that are physically similar given object significantly less "graspable" terms specified grasping policy. We present three algorithms for synthesizing adversarial under the reliability measure Dex-Net 1.0 parallel-jaw grippers: 1) two analytic perturb vertices antipodal faces (one...

10.1109/coase.2019.8843059 article EN 2022 IEEE 18th International Conference on Automation Science and Engineering (CASE) 2019-08-01

Accessing software resources via the Cloud has become increasingly popular as a means to configure and manage automation systems with reduced infrastructure overhead. Dex-Net Service (DNaaS) is cloud-based grasp planning system for parallel-jaw grippers that provides graphical user interface API access 1.0, robust based on wrench mechanics stochastic sampling. DNaaS allows anyone online compute grasps triangular meshes visualize results. This paper presents architecture, examples of...

10.1109/coase.2018.8560447 article EN 2022 IEEE 18th International Conference on Automation Science and Engineering (CASE) 2018-08-01

Robot grasping of deformable hollow objects such as plastic bottles and cups is challenging, the grasp should resist disturbances while minimally deforming object so not to damage it or dislodge liquids. We propose minimal work a novel quality metric that combines wrench resistance deformation. introduce an efficient algorithm compute required external for manipulation task by solving linear program. The first computes minimum force estimation gripper jaw displacements based on object's...

10.1109/icra40945.2020.9197062 article EN 2020-05-01

Deep Learning from Demonstrations (Deep LfD) is a promising approach for robots to perform precise bilateral automation tasks involving contact and deformation, where dynamics are difficult model explicitly. LfD methods typically use datasets of 1) human videos, which do not match robot kinematics capabilities or 2) waypoints collected with tedious move-and-record interfaces, such as teaching pendants kinesthetic teaching. We explore an alternative using the Intuitive Surgical da Vinci,...

10.1109/coase.2017.8256067 article EN 2017-08-01
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