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Tactile navigation system using a haptic device

Journal of Institute of Control, robotics and Systems 2014年第8期20卷 807-814页

作者： Lee, Dong-Hyuk Noh, Kyung-Wook Kang, Sun Kyun Kim, Hyun Woo Lee, Jang-Myung Department of Electrical Engineering Pusan National University Korea Republic of Department of Interdisciplinary Program in Robotics Pusan National University Korea Republic of

In this paper, we proposed a haptic navigation system which used the tactile data for the user guides of the mobile robot to the reference point via tele-operation in unknown blind environment. This navigation system can enable a mobile robot to avoid obstacles and move to the reference point, according to the direction provided by the device guides through a haptic device consisting of a vibration motor in a blind environment. There are a great deal of obstacles in real environments, and so mobile robots can avoid obstacles by recognizing the exact position of each obstacle through the superposition of an ultrasonic sensor. The navigation system determines the direction of obstacle avoidance through an avoidance algorithm that uses virtual impedance, and lets users know the position of obstacles and the direction of the avoidance through the haptic device consisting of 5 vibration motors. By letting users know intuitionally, it lets the mobile robot precisely reach the reference point in unknown blind environment. This haptic device can implement a haptic navigation system through the tactile sensor data. © ICROS 2014.

关键词： Mobile robots

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Deep Learning Fast MRI Using Channel Attention in Magnitude Domain

Deep Learning Fast MRI Using Channel Attention in Magnitude ...

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IEEE International Symposium on Biomedical Imaging

作者： Joonhyung Lee Hyunjong Kim HyungJin Chung Jong Chul Ye Department of Bio and Brain Engineering KAIST Korea Robotics Program KAIST Korea KAIST Korea

ISBN: (数字)9781538693308

ISBN: (纸本)9781538693315

Magnetic resonance imaging (MRI) acquisition is an inherently slow process whose acceleration has been the subject of much investigation. In recent years, the explosive advance of deep learning techniques for computer vision and image reconstruction has led to the investigation of deep neural networks for the reconstruction of MRI with under-sampled k-space. In this work, we propose a new image domain architecture that directly produces a sum-of-squares image from under-sampled multi-coil MRI acquisition. This model, called BarbellNet, is a fully convolutional neural network architecture that utilizes the channel attention mechanism using the residual channel attention block (RCAB). Through extensive experiments with the fastMRI data set, we confirm the efficacy of BarbellNet.

关键词： Training Magnetic resonance imaging Image reconstruction Machine learning Measurement Acceleration Feature extraction

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Haptic display for virtual reality: progress and challenges

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Virtual Reality & Intelligent Hardware 2019年第2期1卷 136-162页

作者： Dangxiao WANG Yuan GUO Shiyi LIU Yuru ZHANG Weiliang XU Jing XIAO State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijing 100083China Beijing Advanced Innovation Center for Biomedical Engineering Beihang UniversityBeijing 100083China Peng Cheng Laboratory Shenzhen 518055China Department of Mechanical Engineering University of AucklandAuckland 1142New Zealand School of Computer Science and the Robotics Engineering Program Worcester Polytechnic InstituteWorcesterMA 01609-2280USA

Immersion, interaction, and imagination are three features of virtual reality (VR). Existing VR systems possess fairly realistic visual and auditory feedbacks, and however, are poor with haptic feedback, by means of which human can perceive the physical world via abundant haptic properties. Haptic display is an interface aiming to enable bilateral signal communications between human and computer, and thus to greatly enhance the immersion and interaction of VR systems. This paper surveys the paradigm shift of haptic display occurred in the past 30 years, which is classified into three stages, including desktop haptics, surface haptics, and wearable haptics. The driving forces, key technologies and typical applications in each stage are critically reviewed. Toward the future high-fidelity VR interaction, research challenges are highlighted concerning handheld haptic device, multimodal haptic device, and high fidelity haptic rendering. In the end, the importance of understanding human haptic perception for designing effective haptic devices is addressed.

关键词： Haptic display Virtual reality Desktop haptics Surface haptics Wearable haptics Multimodal haptics

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Design and Development of an Internet of Things (IoT)-Based Application and System to Detect Stunting in Infants and Toddlers

Design and Development of an Internet of Things (IoT)-Based ...

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HCI and UX Conference in Indonesia (CHIuXiD), International

作者： Theresa Tiffany James Jeremia Zener Sukra Lie Automotive and Robotics Engineering Program Computer Engineering Department BINUS ASO School of Engineering Bina Nusantara University Jakarta Indonesia

ISBN: (数字)9798350380439

ISBN: (纸本)9798350380446

Currently, the process of monitoring children’s growth in Indonesia relies on manual methods for collecting anthropometric data. These methods pose a risk of data recording errors. Additionally, the ratio of healthcare workers to children in Indonesia is 1:90, a significant disparity that hinders efforts to reduce the prevalence of stunting in the country. To support the third Sustainable Development Goal (SDG), which emphasizes “Good Health and Well-being,” it is crucial to address issues in the stunting management process, from data collection to monitoring. The design and development of this iOS-based mobile application aim to assist in monitoring child growth and provide guidance and steps for prevention and treatment. Besides application development, it also involves the design and development of an Internet of Things (IoT) system to aid in the collection of children’s anthropometric data. The research methodology includes studying stunting cases in Indonesia, anthropometric data calculation methods, stunting prevention and management steps, application design and development, automatic anthropometric data collection, and online data storage and transmission using IoT technology. The developed application and system have been tested and successfully integrated. The IoT device has an accuracy rate of 99.83% for weight measurement calibration and 98.68% for height or length measurement calibration. From the testing results of the child condition calculation method in the application, an accuracy rate of 100% was achieved.

关键词： Weight measurement Pediatrics Accuracy Prevention and mitigation Data collection Mobile applications Calibration Internet of Things Monitoring Testing

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Developing an Integrated Cognitive Test (ICT) for Computerized Assessment of Cognitive Impairment Risk 15

Developing an Integrated Cognitive Test (ICT) for Computeriz...

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15th Biomedical engineering International Conference, BMEiCON 2023

作者： Limpornchitwilai, Warissara Paengkumhag, Chatchai Jutharee, Wisanu Chamnongthai, Kosin Kaewkamnerdpong, Boonserm King Mongkut's University of Technology Thonburi Biological Engineering Program Faculty of Engineering Bangkok Thailand King Mongkut's University of Technology Thonburi Institute of Field Robotics and Automation Bangkok Thailand King Mongkut's University of Technology Thonburi Department of Electrical Engineering Bangkok Thailand

ISBN: (纸本)9798350345247

In an aging society, dementia is a notable issue that occurs as individuals grow older, impacting cognitive ability and emotional well-being. This has led to the development of cognitive assessment tools to facilitate early detection of cognitive impairment. Limited utilization of computerized tests across different countries is due to the mismatch of existing computerized tests between the educational and cultural backgrounds of the elderly;this study sought to address this issue by developing the Integrated Cognitive Test (ICT). ICT is designed as a computerized tool for assessing the risk of cognitive impairment in Thai older adults with an easy-to-use interface. Thirty-six elderly participants with diverse education levels and without prior cognitive impairment diagnoses participated in the study. They completed MoCA, MMSE, and ICT in a single-day experiment. The scores, reaction time, and overall completion time were recorded for analysis. The study found significant differences between ICT and MMSE scores (p © 2023 IEEE.

关键词： Decision trees

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2D image feature-based real-time RGB-D 3D SLAM

2D image feature-based real-time RGB-D 3D SLAM

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1st International Conference on Robot Intelligence Technology and Applications, RiTA 2012

作者： Lee, Donghwa Kim, Hyongjin Myung, Hyun Department of Civil and Environmental Engineering KAIST 291 Daehak-ro Yuseong-gu Daejeon 305-701 Korea Republic of Robotics Program KAIST 291 Daehak-ro Yuseong-gu Daejeon 305-701 Korea Republic of

ISBN: (纸本)9783642373732

This paper proposes a real-time RGB-D (red-green-blue depth) 3D SLAM (simultaneous localization and mapping) system. Kinect style sensors give RGB-D data which contains 2D image and per-pixel depth information. 6-DOF (degree-of-freedom) visual odometry is obtained through the 3D-RANSAC (three-dimensional random sample consensus) algorithm with image features and depth information. For speed up extraction of features, parallel computation is performed on a GPU (graphics processing unit) processor. After a feature manager detects loop closure, a graph-based SLAM algorithm optimizes trajectory of the sensor and 3D map. Experimental results show the processing rate over 20 Hz. © 2013 Springer-Verlag.

关键词： Graphics processing unit

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Simulation of Data Acquisition System Using SimulIDE, Virtual Serial Port and Python

Simulation of Data Acquisition System Using SimulIDE, Virtua...

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International Conference on Education and Technology (ICET)

作者： Muhammad Nurul Puji Winda Astuti Computer Engineering Department Automotive and Robotics Engineering Program BINUS ASO School of Engineering Bina Nusantara University Jakarta Indonesia

Data acquisition systems are commonplace in the current era of digitalization and Industry 4.0. These systems are typically used to obtain data from sensors, whether analog or digital, which is then stored for processing in subsequent stages. However, the implementation of hardware for creating data acquisition systems can be challenging due to constraints such as laboratory facilities, budget limitations, and other factors. Therefore, in this research, SimulIDE simulation software was employed to simulate electronic components and the Arduino Uno. To make this virtual Arduino appear as a physical one to the host computer, PyVirtualSerialPorts was used as a virtual serial port. The data acquisition system was created using Python programming with several key features: it can store data in CSV format, present data plots and graphs, and display the frequency spectrum of signals. The system achieved a sampling speed of 1000 data points per second, with input signals limited to a maximum of 10 Hz. This study also shows that signal distortion can occur due to excessively frequent data plotting and Fast Fourier Transform (FFT) processing. Therefore, the use of SimulIDE simulator, virtual serial port, and Python can be utilized in the learning process of a simple data acquisition system.

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Verification of registration method using a 3D laser scanner for orthopedic robot systems

Verification of registration method using a 3D laser scanner...

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International Conference on Control, Automation and Systems ( ICCAS)

作者： Joon-Yeon Cho Jeong-Yean Yang Min-Seok Lee Dong-Soo Kwon Department of Mechanical Engineering KAIST Daejeon South Korea Department of Robotics Program KAIST Daejeon South Korea

Knee arthroplasty requires precise milling of the implant cavity, which can prolong implant life and thus, improve the surgical outcome. Robot knee arthroplasty can significantly increase precision of the milling for the implant cavity. However, robot systems often involve process of registration (matching coordinates of robot, patient, and the image data), which can be one of the major drawbacks. The purpose of this paper is to present a new registration method using a surface data extracted from a 3D laser scanner for registration in robotic arthroplasty. Registration for robotic arthroplasty requires the following steps: 3D reconstruction (3D model) of the distal femur using the bone counters extracted from computed tomography (CT) image sections; surface data extraction using a 3D laser scanner; and matching of the 3D model and the extracted surface data. Bone model mechanism was designed to estimate bone motion and available bone exposure. Surface data extracted using 3D laser scanner was matched with 3D model. ICP matching algorithm was employed to perform the spatial transformation between the 3D model and the surface data extracted using the 3D laser scanner. Four local regions (based on anatomical structure) of distal femur were tested to find RSR (Recommended Scanning Region). Issues regarding the application of 3D laser scanner to robotic knee arthroplasty (TKA) is presented and discussed.

关键词： Three dimensional displays Solid modeling Data models Laser modes Robots Surface emitting lasers Data mining

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Swarm Intelligence Path-Planning Pipeline and Algorithms for UAVs: Simulation, Analysis and Recommendation 26

Swarm Intelligence Path-Planning Pipeline and Algorithms for...

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26th International Conference on Enterprise Information Systems, ICEIS 2024

作者： Harris, Wyatt Tseng, Sean Viso, Tabatha Weissman, Max Ngan, Chun-Kit Department of Robotics Engineering Worcester Polytechnic Institute 100 Institute Rd. WorcesterMA United States Data Science Program Worcester Polytechnic Institute 100 Institute Rd. WorcesterMA United States

ISBN: (纸本)9789897586927

This research work aims to support domain experts in the selection of proper path planning algorithms for UAVs to solve a domain business problem (i.e., the last mile delivery of goods). In-depth analysis, insight, and recommendations of three promising approaches, including reinforcement learning-based, bio-inspired-based, and physics-based are used to address the multi-agent UAV path planning problem. Specifically, the contributions of this work are fourfold: First, we develop a unified pipeline to implement each approach to conduct this analysis. Second, we build a 2D UAV path planning environment to simulate each approach. Third, using this 2D environment, we run the 450 simulations in three different group sizes of swarm UAV agents (i.e., 3, 5, and 10) within three environments of varying complexity (i.e., Easy, Intermediate, and Hard). We aggregate the simulation data and compare their performance in terms of success rate, run-time, and path length while using the classical A* Search as a baseline. Finally, based upon the performance of each approach and our analytical investigations, we provide informed recommendations for the optimal use case of each UAV path planning approach. The recommendations are presented using parameters for environmental complexity and urgency of goods delivery. Copyright © 2024 by SCITEPRESS – Science and Technology Publications, Lda.

关键词： Motion planning

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Computer Vision-Based Hydroponic Lettuce Contour and Area Recognition System

Computer Vision-Based Hydroponic Lettuce Contour and Area Re...

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International Conference on Electrical engineering and Informatics, ICEEI

作者： Samuel Raymond Pranowo Zener Lie Sukra Muhammad Zacky Asy'ari Marisa Paryasto Computer Engineering Department Automotive and Robotics Program BINUS ASO School of Engineering Bina Nusantara University Jakarta Indonesia Electrical Engineering Department Computer Engineering Program Telkom University Bandung Indonesia

Agriculture is a vital industry for the people of Indonesia, but there are several obstacles, including limited space in urban areas and inefficient conventional sorting and harvesting methods. Using computer vision to choose hydroponic lettuce that is ready to be harvested and a robotic arm to bring the selected lettuce yields, the produced system aims to solve this problem. The system's computer vision algorithms include color space conversion, intensity transformation, and an algorithm for following borders. This project's research methodology combines a quantitative approach with an experimental approach, which consists of conducting several trials on the built system. Several trials demonstrated that the computer vision software was able to accomplish the specified objectives. The average success rate of the developed computer vision system is 93%, while the average success rate of the robot arm is 85%.

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