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arXiv 2023年

作者： Liu, Zhengzhe Dai, Peng Li, Ruihui Qi, Xiaojuan Fu, Chi-Wing The Department of Computer Science and Engineering The Chinese University of Hong Kong Hong Kong The Department of Electrical and Electronic Engineering The University of Hong Kong Hong Kong College of Computer Science and Electronic Engineering The Hunan University China

This paper presents a new text-guided 3D shape generation approach DreamStone that uses images as a stepping stone to bridge the gap between the text and shape modalities for generating 3D shapes without requiring paired text and 3D data. The core of our approach is a two-stage feature-space alignment strategy that leverages a pre-trained single-view reconstruction (SVR) model to map CLIP features to shapes: to begin with, map the CLIP image feature to the detail-rich 3D shape space of the SVR model, then map the CLIP text feature to the 3D shape space through encouraging the CLIP-consistency between the rendered images and the input text. Besides, to extend beyond the generative capability of the SVR model, we design the text-guided 3D shape stylization module that can enhance the output shapes with novel structures and textures. Further, we exploit pre-trained text-to-image diffusion models to enhance the generative diversity, fidelity, and stylization capability. Our approach is generic, flexible, and scalable. It can be easily integrated with various SVR models to expand the generative space and improve the generative fidelity. Extensive experimental results demonstrate that our approach outperforms the state-of-the-art methods in terms of generative quality and consistency with the input text. Codes and models are released at https://***/liuzhengzhe/DreamStone-ISS. © 2023, CC BY.

关键词： Distillation

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Ultra Low Latency Hardware Optimised Radix-4 FFT for Optical Wireless FPGA Transceivers Via Hermitian Symmetry Characteristics

Ultra Low Latency Hardware Optimised Radix-4 FFT for Optical...

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IEEE Conference on High Performance Extreme Computing (HPEC)

作者： Michael Codd Ciara McDonald Yiyue Jiang Chunan Chen Holger Claussen Miriam Leeser John Dooley Department of Electronic Engineering Maynooth University Department of Electronic Engineering Northeastern University USA Wireless Communications Tyndall National Institute School of Computer Science and Information Technology University College Cork School of Engineering Trinity College Dublin

ISBN: (数字)9798350387131

ISBN: (纸本)9798350387148

Future telecommunication networks are expected to deliver exponential performance increases across all domains and with the increased prevalence of real-time IoT devices, greater emphasis is placed on reducing the latency of network links. Traditionally, wireless networking requirements have been fulfilled primarily through use of the RF spectrum, which is rapidly approaching saturation and will eventually very likely become insufficient to meet all future network demands. The optical spectrum however offers enormous amounts of unrestricted and unallocated bandwidth. Efficient high-modulation indoor LED lighting fixtures could potentially integrate with and complement the RF spectrum for short to medium distance low latency applications. The Fast Fourier Transform (FFT) is a ubiquitous operation in many communication network topologies. Typically the FFT is computed via serial methods which are optimised for low resource usage, however these architectures fall short of the Ultra Low Latency (ULL) requirements for optical wireless communication. Fully parallel FFT computations can achieve nanosecond latency and tens of gigasamples of throughput, far surpassing serial methods. However, their prohibitively high resource utilisation has limited their practical use. In this work, we introduce a hardware optimised, fully parallel architecture for optical wireless communication which leverages hermitian symmetry characteristics within real-valued optical signals and properties of the discrete DFT to reduce the footprint of a fully parallel FFT on an FPGA. The final architecture is implemented on an AMD RFSoC $2 \times 2$ and requires only 3 clock cycles to compute a 256 -point real-valued FFT, a 290 fold reduction compared to an equivalent serial model. The design was tested at 122.88 MHz, resulting in a 24 nanosecond latency, demonstrating its potential for use in optical wireless communication and other high-performance 5G+ networks.

关键词： Wireless communication Fast Fourier transforms Ultraviolet sources Optical saturation Optical fiber networks Hardware Optical signal processing Low latency communication Field programmable gate arrays High-speed optical techniques

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Towards A Knowledge Graph-based Exploratory Search for Privacy engineering 8

Towards A Knowledge Graph-based Exploratory Search for Priva...

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8th International Workshop on the Visualization and Interaction for Ontologies, Linked Data and Knowledge Graphs, VOILA! 2023

作者： Herwanto, Guntur Budi Ekaputra, Fajar J. Piroi, Florina Sabou, Marta Faculty of Computer Science University of Vienna Austria Department of Computer Science and Electronics Universitas Gadjah Mada Indonesia Institute of Information Systems Engineering Faculty of Informatics TU Wien Austria Institute of Data Process and Knowledge Management WU Wien Austria

The concept of privacy-by-design has gained considerable attention in the wake of legal requirements that software systems should fulfill. The interconnected knowledge on privacy concepts, legal requirements, and software development artifacts required to implement this concept can be a major burden for organizations. To address this challenge, we propose a knowledge graph-based Exploratory Search system to help organizations complete privacy engineering tasks. We identify major requirements of such systems and develop an Exploratory Search prototype built on privacy engineering knowledge that integrates different information sources. While still preliminary, this work serves as a foundation for future research on integrating privacy knowledge into software development and demonstrates the potential of Exploratory Search Systems to support the cognitive process in privacy tasks such as privacy threat identification. © 2023 Copyright for this paper by its authors.

关键词： Knowledge graph

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A Cutting-Edge Security Solution: OTP-Based Smart Wireless Locking System

A Cutting-Edge Security Solution: OTP-Based Smart Wireless L...

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International Conference on Computation, Automation and Knowledge Management (ICCAKM)

作者： Prathamesh Jadhav Sakshi Gaul Avishkar Madhwai Vaishnavi Nikam Kiran Mhalaskar Mayuri Deshmukh Department of Electronic and Computer Engineering Sanjivani College of Engineering Savitribai Phule Pune University Pune India

The Arduino-based OTP-Based Smart Wireless Locking System is a model of creativity and effectiveness in the field of modern security solutions. Taking advantage of the powerful capabilities of the Arduino microcontroller and the smooth integration of wireless communication technologies, this system uses One-Time Password (OTP) authentication. The primary idea behind this method is to offer a safe and intuitive locking mechanism. To unlock, users must generate one-time passwords (OTPs) using a specific mobile application. Bluetooth and other wireless communication protocols are used to transmit OTPs to the central control unit with absolute accuracy. The wireless lock module, which was carefully selected for its dependability, reacts quickly to the central control unit's command and makes unlocking easier after OTP validation. The OTP-Based Smart Wireless Locking System combines dependability, security, and user-friendliness in a way that perfectly meets modern access control requirements.

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Optimization of 3D Holographic Projection for a Medical Image System using Taguchi Method and Fuzzy Inference System

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Journal of Imaging Science and Technology 2023年第4期67卷 1-7页

作者： Chou, Ming-Chung Huang, Tian-Hsiang Tsai, Jinn-Tsong Chen, Yen-Ming J. Hwang, Kao-Shing Huang, Wei-Tai Ho, Wen-Hsien Department of Medical Imaging and Radiological Sciences Kaohsiung Medical University Kaohsiung Taiwan Center for Big Data Research Kaohsiung Medical University Kaohsiung Taiwan Department of Medical Research Kaohsiung Medical University Hospital Kaohsiung Taiwan Department of Computer Science and Information Engineering National Penghu University of Science and Technology Penghu Taiwan Department of Computer Science and Artificial Intelligence National Pingtung University Pingtung Taiwan Department of Healthcare Administration and Medical Informatics Kaohsiung Medical University Kaohsiung Taiwan Department of Information Management National Kaohsiung University of Science and Technology Kaohsiung Taiwan Department of Electrical Engineering National Sun Yat-Sen University Kaohsiung Taiwan Department of Mechanical Engineering National Pingtung University of Science and Technology Pingtung Taiwan College of Professional Studies National Pingtung University of Science and Technology Pingtung Taiwan

Two dimensional projections of three dimensional (3D) objects are used to teach anatomy. These projections are relatively unrealistic, and medical students cannot easily and accurately grasp the position and shape of each anatomical structure. As a remedy, 3D holographic projections allow for 3D anatomical structures to be projected in space without the use of worn contraptions. This study designed a method for optimizing 3D holographic projections with respect to the quality characteristics of 3D imaging definition and stereoscopic quality. The Taguchi method was used to determine the factors that most greatly influenced these quality characteristics, and the Delphi method and fuzzy theory were used to quantify image quality. Among three main factors of material of the projection panel, thickness of the projection panel, and angle made by the projection panel with the horizontal plane, thickness was the most influential. The optimal combination of factors was acrylic material, a thickness of 1 mm, and an angle of 45°. This paper's method aids medical pedagogy and can be used by the holographic projection manufacturing industry to optimize 3D imaging definition and stereoscopic quality. © 2023 Society for Imaging Science and Technology.

关键词： Taguchi methods

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Recurrent Optical Spectrum Slicing Receiver for Power Fading Mitigation in Highly Dispersive Links using Programmable Photonics

Recurrent Optical Spectrum Slicing Receiver for Power Fading...

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IEEE Photonics Conference (IPC)

作者： K. Sozos F. Da Ros Metodi Yankov Stavros Deligiannidis G. Sarantoglou C. Mesaritakis A. Bogris Department of Informatics and Computer Engineering University of West Attica Athens Greece Department of Electrical and Photonics Engineering Technical University of Denmark Lyngby Denmark Department of Information and Communication Systems Engineering University of the Aegean Karlovassi Greece

We experimentally validate our works in recurrent optical spectrum slicers for dispersion compensation in IM/DD links, exploiting programmable photonics. We equalize 50 km of 64 Gb/s PAM-4 transmission in C-band, with... 详细信息

ISBN: (数字)9798350361957

ISBN: (纸本)9798350361964

关键词： Fading channels C-band Prevention and mitigation Optical computing Optical receivers Optical fiber communication Dispersion Photonics

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Mobile WiMAX Network Optimization and Performance Analysis 21

Mobile WiMAX Network Optimization and Performance Analysis

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7th International Conference on engineering and MIS, ICEMIS 2021

作者： Alhamdi, Nada A. Ahmeda, Shubat S. Department of Electrical and Electronic Engineering University of Tripoli Libya Department of Computer Engineering University of Tripoli Libya

ISBN: (纸本)9781450390446

Mobile WiMAX is a fast growing Broadband Wireless Access (BWA) technology that gives a flexible and cost-effective solution to fixed broadband access problems such as the lacking of support for terminal mobility. Mobile WiMAX enables low-cost mobile internet applications, realizes the convergence of mobile and fixed broadband access in single air interface and network architecture. Although Mobile WiMAX has a lot of features such as high data rate, quality of service, scalability, high security and of course mobility, there are some problems that can be identified within the network;two major problems include signal interference and network coverage. In this paper, Mobile WiMAX Network Optimization is implemented to improve the interference control, enable effective coverage and enhance user experience to meet new business development needs and maximize profits. The paper is supported by measured real data captured in an urban environment using vehicular drive tests and other tools. Analysis shows that Mobile WiMAX is able to achieve a high-level improvement in network coverage and signal quality. © 2021 ACM.

关键词： Quality control

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Road Damage Detection and Alert Application Using Smartphone's Built-In Sensors 24

Road Damage Detection and Alert Application Using Smartphone...

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24th International electronics Symposium, IES 2022

作者： Puspita, Dicha Nada Basuki, Dwi Kurnia Dewantara, Bima Sena Bayu Politeknik Elektronika Negeri Surabaya Department of Informatics and Computer Engineering Surabaya Indonesia Tokyo Metropolitan University Faculty of Systems Design Tokyo Japan

ISBN: (数字)9781665489713

ISBN: (纸本)9781665489713

Road damage is truly inconvenient for drivers. It possibly results in accidents. Drivers may get a warning to avoid it if the damaged location has been detected. Road damage detection can be done using the built-in sensors on a smartphone. This research was conducted using the Machine Learning method. The final results were road damage detection and warning applications. TensorFlow Lite was needed for visual detection, while motional detection utilized an accelerometer. A warning application was synced with Firebase Cloud Messaging to send notifications 25 meters to the damage point. This allows the driver to avoid such damage. From the test results, the accuracy of visual detection reached 85.03% and motional detection reached 73.71%. In the warning application, it successfully sent notifications with 64.28% accuracy. © 2022 IEEE.

关键词： Accelerometers

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Consecutive Irradiation and Thermal Annealing of Commercial P-Channel Power VDMOSFETs 33

Consecutive Irradiation and Thermal Annealing of Commercial ...

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33rd IEEE International Conference on Microelectronics, MIEL 2023

作者： Mitrovic, N. Guirado, D. Dankovic, D. Palma, A.J. Ristic, G. Carvajal, M.A. University of Niš Faculty of Electronic Engineering Department of Microelectronics Niš18000 Serbia Hospital Universitario San Cecilio Radiophysics Unit Granada Spain University of Granada Department of Electronics and Computer Technology Granada Spain

ISBN: (纸本)9798350347760

This paper presents research on the effects caused with consecutive irradiation and thermal annealing of two commercial models of p-channel power VDMOSFETs IRF9520 and IRF9530. Threshold voltage shift, which is marked as the most important parameter for both dosimetry application, as well as reliability assesment is obtained and discussed. Experiment setup, as well as the measuring procedures are explained in more detail. Irradiation degradation causes threshold voltage shift, while the thermal annealing causes recovery. The average sensitivity of models for consecutive irradiation sessions is 9.54 ± 0.04 mV Gy-1, where averagely 91.88 % is recovered through thermal annealing. Results point out that p-channel power VDMOSFET devices could be used in some dosimetry applications. © 2023 IEEE.

关键词： Irradiation

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Image Enhancement for Improving Facial Thermal and Rgb Images Qualities for Temperature Monitoring

SSRN

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SSRN 2023年

作者： Suriani, Nor Surayahani Tarmizi, Syaidatus Syahira Ahmad Department of Computer Engineering Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia Malaysia

This paper presents an exploration of facial skin temperature responses while the subject’s head posture is simultaneously varied in indoor environment settings using benchmark datasets with the inclusion of thermal and RGB images. The selection of gender-balanced was considered in the experiment and thus we propose an image enhancement algorithm for the obtained images. The image quality assessment is performed to characterize the quality score for individual images according to the ways of algorithm perceived the image quality. For automatically extracting facial skin temperature, two sets of the labeled region of measurements are consistently detected across both image spectrums for all subjects. That being said, the mean temperature is then calculated in each labeled region and it was found statistically different due to the correlation of color temperature produced by each image group. In this work, the use of large image datasets with a variety of temperature trends may significantly improve temperature estimation. Even though the findings may not be precise as the use of biosensor methods to represent the actual body temperature, we manage to analyze which labeled region may show the warm or cold temperature values as a quick screening. The experiments demonstrate that a statistically significant difference in the temperature measurements can be found between the selection of facial regional, gender-related and asymmetry analysis on similar facial anatomy. © 2023, The Authors. All rights reserved.

关键词： Image quality

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