The proceedings contain 50 papers. The topics discussed include: an improved rapidly-exploring random tree star algorithm for manipulator path planning;a robust robot system via multi-sensor fusion localization and op...
ISBN:
(纸本)9798350327656
The proceedings contain 50 papers. The topics discussed include: an improved rapidly-exploring random tree star algorithm for manipulator path planning;a robust robot system via multi-sensor fusion localization and optimized path planning;design of a medical expert system to consult selecting an examination department and to provide the path signal for a mobile robot to lead patients to the consulted department;joint delivery path optimization based on improved particle swarm optimization algorithm;slipping control of tracked vehicles in shallow water areas;towards multimodal multitask scene understanding models for indoor mobile agents;gearbox fault diagnosis based on local domain adaptation network under different working conditions;coordinated tuning of slurry shield control parameters based on reinforcement learning;and whole body motion control strategy of humanoid robot based on double-layer quadratic optimization.
Compliant actuation bestows robots with the ability to cope with unstructured environments, move with agility, and interact safely with humans at the expense of reduced tracking accuracy. The inclusion of dampening co...
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ISBN:
(数字)9781728196817
ISBN:
(纸本)9781728196817
Compliant actuation bestows robots with the ability to cope with unstructured environments, move with agility, and interact safely with humans at the expense of reduced tracking accuracy. The inclusion of dampening components aims to reduce oscillatory dynamics and partially restore precision without sacrificing the previously obtained characteristics. This paper introduces the concept and design of a novel damped compliant actuator suitable for building multi-degree of freedom systems. The proposed unit has a unique actuator topology that has never been seen before in the literature. The gearbox is used as a differential component, allowing the design of compact units without giving up safety and accuracy enhancements. We present and analyze the actuator's model and experimentally characterize the actuator prototype and the elastic and damping component.
Virtual environments designed for haptic applications are usually rendered as a combination of spring and damper elements. The resulting haptic experience can be greatly enhanced by also adding virtual inertia, for ex...
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ISBN:
(纸本)9781728196817
Virtual environments designed for haptic applications are usually rendered as a combination of spring and damper elements. The resulting haptic experience can be greatly enhanced by also adding virtual inertia, for example when interacting with mobile virtual objects. This paper analyzes the impact of implementing virtual inertia on haptic rendering stability. It describes the methodology followed to identify the physical inertia of a mechanism, to derive the acceleration from position, and the implications of this process on stability. Main results show how digital filtering and internal flexibility of the device affect the expected uncoupled stability region.
Grasping in cluttered environments is one of the most fundamental skills in robotic manipulation. Most of the current works focus on estimating grasp poses for parallel-jaw or suction-cup end effectors. However, the s...
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ISBN:
(纸本)9781728196817
Grasping in cluttered environments is one of the most fundamental skills in robotic manipulation. Most of the current works focus on estimating grasp poses for parallel-jaw or suction-cup end effectors. However, the study for dexterous anthropomorphic hand grasping in clutter remains a great challenge. In this paper, we propose HGC-Net, a single-shot network that learns to predict dense hand grasp configurations in clutter from single-view point cloud input. Our end-to-end neural network can predict hand grasp proposals efficiently and effectively. To enhance generalization, we built a largescale synthetic grasping dataset with 179 household objects, 5K cluttered scenes and over 10M hand annotations. Experiments in simulation show that our model can predict dense and robust hand grasps and clear over 78% of unseen objects in clutter without any post-processing and outperform baseline methods by a large margin. Experiments on the real robot platform also demonstrate that the model trained on synthetic data performs well in natural environments. Code is available at https://***/yimingli1998/hgc net.
Depth images usually contain pixels with invalid measurements. This paper presents a deep learning approach that receives as input a partially-known volumetric model of the environment and a camera pose, and it predic...
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ISBN:
(纸本)9781728196817
Depth images usually contain pixels with invalid measurements. This paper presents a deep learning approach that receives as input a partially-known volumetric model of the environment and a camera pose, and it predicts the probability that a pixel would contain a valid depth measurement if a camera was placed at the given pose. The proposed network architecture consists of a 3D Convolutional Neural Network (CNN) module and a 2D CNN module, connected by a deep learning attention-based projection module. The method was integrated into a CNN-based probabilistic Next Best View planner, resulting in a more realistic prediction of the information gain for each possible viewpoint with respect to state of the art approaches. Experiments were carried out in tabletop scenarios using a robot manipulator with an eye-in-hand depth camera.
Autonomous Underwater Vehicles (AUVs) are a vital element for ocean exploration in various applications;however, energy sustainability still limits long-term operations. An option to overcome this problem is using und...
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ISBN:
(纸本)9781728196817
Autonomous Underwater Vehicles (AUVs) are a vital element for ocean exploration in various applications;however, energy sustainability still limits long-term operations. An option to overcome this problem is using underwater docking for power and data transfer. To robustly guide an AUV into a docking station, we propose an underwater vision algorithm for short-distance detection. In this paper, we present a Convolutional Neural Network architecture to accurately estimate the dock position during the terminal homing stage of the docking. Additionally, to alleviate the lack of available underwater datasets, two methods are proposed to generate synthetic datasets, one using a CycleGAN network, and another using Artistic Style transfer network. Both methods are used to train the same CNN architecture to compare the results. Finally, implementation details of the CNN are presented under the backseat architecture and ROS framework, running on an IVER3 AUV.
Brain tumor is one of the most deadly diseases today. Early identification is the key in treatment and automated method of image classification can help in this process. But, there are significant obstacles in precise...
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Making raw material purchase forecasts for companies is very difficult and, if inadequately controlled, can affect the company's decision making and profitability. Currently, there are optimized systems or mathema...
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A known challenge for computer vision methods applied to the underwater domain is that nonlinear attenuation of light in underwater environments distorts the color signal in captured imagery, resulting in inconsistent...
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ISBN:
(纸本)9798350377712;9798350377705
A known challenge for computer vision methods applied to the underwater domain is that nonlinear attenuation of light in underwater environments distorts the color signal in captured imagery, resulting in inconsistent color and contrast at varying distances to an imaged target. While surface reflectance can provide a useful cue for classifying imagery of the seafloor by object or substrate types, color inconsistency makes robust classification challenging. We introduce a method that leverages hyperspectral imagery with an underwater light formation model and structure from motion to estimate the intrinsic optical properties of the underwater environment and correct seafloor reflectance estimates from radiance measurements. We show that our method enables consistent surface reflectance estimates under both artificial and ambient lighting conditions and is readily integrated on small underwater vehicle platforms, such as a BlueROV.
This paper proposes Elastic Tracker, a flexible trajectory planning framework that can deal with challenging tracking tasks with guaranteed safety and visibility. Firstly, an object detection and intension-free motion...
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ISBN:
(纸本)9781728196817
This paper proposes Elastic Tracker, a flexible trajectory planning framework that can deal with challenging tracking tasks with guaranteed safety and visibility. Firstly, an object detection and intension-free motion prediction method is designed. Then an occlusion-aware path finding method is proposed to provide a proper topology. A smart safe flight corridor generation strategy is designed with the guiding path. An analytical occlusion cost is evaluated. Finally, an effective trajectory optimization approach enables to generate a spatiotemporal optimal trajectory within the resultant flight corridor. Particular formulations are designed to guarantee both safety and visibility, with all the above requirements optimized jointly. The experimental results show that our method works more robustly but with less computation than the existing methods, even in some challenging tracking tasks.
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