Xufeng Li

ORCID: 0000-0001-9538-6046
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About
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Research Areas
  • Advanced Vision and Imaging
  • Video Coding and Compression Technologies
  • Advanced Image Processing Techniques
  • Privacy-Preserving Technologies in Data
  • Human Pose and Action Recognition
  • Image and Video Quality Assessment
  • Advanced Measurement and Metrology Techniques
  • Regional Development and Environment
  • Multimedia Communication and Technology
  • Robotics and Sensor-Based Localization
  • Image Enhancement Techniques
  • Image Processing Techniques and Applications
  • Technology and Security Systems
  • Social Capital and Networks
  • 3D Shape Modeling and Analysis
  • Artificial Intelligence in Healthcare and Education
  • Energy Efficient Wireless Sensor Networks
  • Biomedical Text Mining and Ontologies
  • Image and Video Stabilization
  • Computer Graphics and Visualization Techniques
  • Color Science and Applications
  • Gait Recognition and Analysis
  • Mobile Agent-Based Network Management
  • Internet Traffic Analysis and Secure E-voting
  • Congenital heart defects research

Chongqing University of Posts and Telecommunications
2023-2025

National Space Science Center
2024

University of Chinese Academy of Sciences
2021-2024

Wuhan University of Technology
2010-2024

City University of Hong Kong
2023-2024

Peking University Shenzhen Hospital
2021-2022

Peng Cheng Laboratory
2021-2022

Xi'an Jiaotong University
2022

Peking University
2014-2022

Shanghai Advanced Research Institute
2022

Panoramic video contains 360-degree content and it is convenient to draw the that user wants watch on head-Mount display (HMD) of virtual reality device. However, few encoders code panoramic directly. needs be projected a compression-friendly rectangular plane first. Then existing coding standards such as AVC, HEVC, VVC, AVS are used content. In order improve efficiency, IEEE 1857.9 immersive working group was established develop efficient projection methods. This paper presents an overview...

10.1109/tcsvt.2022.3165878 article EN IEEE Transactions on Circuits and Systems for Video Technology 2022-04-08

Compared with H.264, the High Efficiency Video Coding standard has higher compression efficiency and better transmission performance, will be used in wider field. TZ search method is adopted to perform integer pixel HEVC. Its performance very perfect but time-consuming. In this paper, we use hexagon place of speed up motion estimation process. Simulation results show that scheme accelerates 2-6 times loss negligible sequences slow movements.

10.1109/bmsb.2014.6873547 article EN 2014-06-01

High Efficient Video Coding (HEVC) is the latest coding standard with superior compression efficiency while its encoding complexity much higher compared H.264/AVC. Motion estimation one of most time-consuming parts in video coding. In reference software HEVC, TZ (Test Zone) search method adopted as fast motion method. However, still high. There are many other methods, for example, hexagon method, but their performance loss larger than search. order to balance speed and performance, a new...

10.1109/iscas.2015.7169264 article EN 2022 IEEE International Symposium on Circuits and Systems (ISCAS) 2015-05-01

Vertical federated learning can aggregate participant data features. To address the issue of insufficient overlapping in vertical learning, this study presents a generative adversarial network model that allows distributed augmentation. First, proposes FeCGAN for multiple participants with data, considering fact generate simulation samples. This is suitable sources and augment participants' local data. Second, to problem divergence caused by different distributions sources, aggregation...

10.1109/tbdata.2024.3375150 article EN IEEE Transactions on Big Data 2024-01-01

Abstract Inverse tone mapping technique is widely used to restore the lost textures from a single low dynamic range image. Recently, many stack‐based deep inverse networks have achieved impressive results by estimating set of multi‐exposure images input. However, there are still some limitations. On one hand, these methods usually fixed length for estimated stack, which may introduce computational redundancy or cause inaccurate results. other they neglect that difficulties each exposure...

10.1049/cit2.12188 article EN cc-by-nc-nd CAAI Transactions on Intelligence Technology 2023-02-02

The software x264 is an open source encoder for video compression which was released in 2003 and has been dominating the industry past decade. Over last few years, x265 High Efficiency Video Coding (HEVC) coding standard released, it claims significant improvement over x264. Similar to x265, efficient namely uavs3e designed by our team other corporate contributors 2020. library application are available GitHub [1]. main goal of development achieve substantial gain state-of-the-art codecs...

10.1109/icme51207.2021.9428331 article EN 2022 IEEE International Conference on Multimedia and Expo (ICME) 2021-06-09

Biomedical question answering (QA) represents a growing concern among industry and academia due to the crucial impact of biomedical information. When mapping ranking candidate snippet answers within relevant literature, current QA systems typically refer information retrieval (IR) techniques: specifically, query processing approaches models. However, these IR-based are insufficient consider both syntactic semantic relatedness thus cannot formulate accurate natural language answers. Recently,...

10.1371/journal.pone.0242061 article EN cc-by PLoS ONE 2020-11-09

Geometric constraint algorithms can solve phase ambiguity for fringe projection profilometry (FPP). However, they either require multiple cameras or suffer from a small measurement depth range. To overcome these limitations, this Letter proposes an algorithm combining orthogonal and geometric constraints. A novel, to the best of our knowledge, scheme is developed assess reliabilities potential homologous points, which works with segmentation determine final HPs. With full consideration lens...

10.1364/ol.475771 article EN Optics Letters 2022-10-05

High-quality human reconstruction and photo-realistic rendering of a dynamic scene is long-standing problem in computer vision graphics. Despite considerable efforts invested developing various capture systems algorithms, recent advancements still struggle with loose or oversized clothing overly complex poses. In part, this due to the challenges acquiring high-quality datasets. To facilitate development these fields, paper, we present PKU-DyMVHumans, versatile human-centric dataset for...

10.48550/arxiv.2403.16080 preprint EN arXiv (Cornell University) 2024-03-24

10.1109/cisat62382.2024.10695298 article EN 5th International Conference on Computer Information Science and Application Technology (CISAT 2022) 2024-07-12

IEEE 802.1AS is a time synchronization standard that can be applied to distributed networks and real-time control systems. It exchanges messages based on Ethernet achieve high-precision synchronization. The protocol stipulates when the network structure does not exceed 7 hops, accuracy less than 1μs, but different positions for obtaining stamp will lead of system. Based analysis existing system, this paper proposes system implemented by hardware logic, obtains at MAC layer higher accuracy....

10.1117/12.2614126 article EN 2021-10-15

Tandem repeats (TRs) are associated with dis-ease genes, play an important role in evolution and genomic organization function. Much research has been done on de-scriptions of properties tandem repeats, such as copy-number, period, etc, correlation be-tween mutations within dis-ease. This project aims to detect some differ-ences which may exist the features dif-ferent disease human whole-genome. The diabetes genes were compared counterparts non-diabetes genes.

10.4236/jbise.2008.12021 article EN Journal of Biomedical Science and Engineering 2008-01-01

As an important embranchment of the public finance policy, government earmarks a certain degree innovation and scientific research funds for university yearly. Nowadays, use efficiency financial in has become universal concern public. The method literature analysis comparative was adopted to analyze results performance budgeting America higher education. On basis this, current situation problems existed reform China were investigated, countermeasures suggestions on put forward accordingly....

10.1109/iciii.2011.406 article EN 2011-11-01

Federated learning (FL) is a rapidly growing research area in machine learning, but it problematic. It has been questioned whether or not existing FL libraries are practical the of medical privacy. To address these issues, we developed CQUPT-FL system. The system focuses on resolving conflict between data integrity and privacy protection cross-domain cross-institution collaborative analysis. supports distributed computing stand-alone simulation methods. deal with problems heterogeneity,...

10.1109/medai59581.2023.00041 article EN 2023-11-18

The method of surface geometry object recovery mentioned in this paper can gain 3D dimensions objects only using a single image on the basis brightness change. In paper, background knowledge and methods related to SFS are briefly introduced. Based analysis comparison various reconstruction algorithms, gives new from image. It is more simple applicable. Using method, hardware equipments include pick-up system computer. operation mode uncomplicated principle optical lens imaging. core idea...

10.1109/icacc.2010.5486789 article EN 2010-01-01

In this paper, we propose a method that combines the monocular vision with binocular to process single texture image feature points difficult extract and restore depth information of inclined plane objects. Through integration two approaches, combine advantages in terms recovery basic structure objects accurate estimation after correctly determining corresponding points, obtain high precision accuracy estimates. Experiments show application can high-accuracy map. Moreover, quality 3-D...

10.1109/etcs.2010.467 article EN 2010-01-01

The construction and development of "two-oriented society" in Wuhan city circle should be combined with the colleges universities region. It's necessary to update concept evaluate status problems existing interaction between urban communities universities. recommended that win-win situation, interactive common strategies established ensure healthy sustainable both sides. On basis investigation, following suggestions are derived: 1) direct coordinate sides based on principle situation 2)...

10.1109/iciii.2010.100 article EN 2010-11-01
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