Junfeng Li

ORCID: 0000-0003-4385-632X
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About
Contact & Profiles
Research Areas
  • Seismic Imaging and Inversion Techniques
  • Remote Sensing and Land Use
  • Industrial Vision Systems and Defect Detection
  • Hydraulic Fracturing and Reservoir Analysis
  • Drilling and Well Engineering
  • Rock Mechanics and Modeling
  • Tunneling and Rock Mechanics
  • Geotechnical and Geomechanical Engineering
  • Simulation and Modeling Applications
  • Landslides and related hazards
  • Geotechnical Engineering and Soil Stabilization
  • Geomechanics and Mining Engineering
  • Anodic Oxide Films and Nanostructures
  • Advanced Sensor and Energy Harvesting Materials
  • Optimization and Search Problems
  • Advanced Image Fusion Techniques
  • Seismic Waves and Analysis
  • Video Surveillance and Tracking Methods
  • Nanowire Synthesis and Applications
  • Speech and Audio Processing
  • Thermal Analysis in Power Transmission
  • Advanced Adaptive Filtering Techniques
  • Semiconductor materials and devices
  • Autonomous Vehicle Technology and Safety
  • Space Satellite Systems and Control

Wuhan University of Technology
2021-2025

Southwest Petroleum University
2024

PetroChina Southwest Oil and Gas Field Company (China)
2021-2024

Shanxi Agricultural University
2024

Daqing Oilfield General Hospital
2024

China Geological Survey
2021

Yunnan University
2021

Institute of Microelectronics
2018

Chinese Academy of Sciences
2018

Wuhan University
2015-2016

Abstract Background Leaf area index (LAI) is an important indicator for assessing plant growth and development, also closely related to photosynthesis in plants. The realization of rapid accurate estimation crop LAI plays role guiding farmland production. In study, the UAV‐RGB technology was used estimate based on 65 winter wheat varieties at different fertility periods, including farm varieties, main cultivars, new lines, core germplasm foreign varieties. Color indices (CIs) texture...

10.1002/jsfa.13817 article EN Journal of the Science of Food and Agriculture 2024-08-16

R ECENTLY, attention has been focused on solar sail missions, such as the new artificial Lagrange points created by sails to be used provide early warning of plasma storms, before they reach Earth [1,2]. There are several prior references with regard orbits in literature. As 1929, Oberth mentioned his study that radiation pressure would displace a reflector an polar orbit anti-sun direction, so plane did not contain center-of-mass [3]. Later, 1977, Austin et al. [4] noted propulsive thrust...

10.2514/1.24315 article EN Journal of Guidance Control and Dynamics 2007-06-20

Deep-learning-based (DL-based) seismic inversion has emerged as one of the state-of-the-art research areas in exploration geophysics with development artificial intelligence technology. Due to its good portability and high computational efficiency, this method a data-driven approach for estimating subsurface properties. However, most current DL-based methods rely solely on data, lacking incorporation prior information. In addition, these are usually performed trace-by-trace, resulting...

10.3390/pr12102259 article EN Processes 2024-10-16

Based on deep neural network multi-task learning technology, lane image detection is studied to improve the application level of driverless assisted driving technology and reduce traffic accidents. The line database published by Caltech Tucson company used extract ROI (Region Interest), scale, inverse perspective transformation as well preprocess image, so enrich data set efficiency algorithm. In this study, ZFNet replace basic networks VPGNet, their structures are changed efficiency....

10.3390/electronics10192356 article EN Electronics 2021-09-27

The formation mechanism and propagation behaviors of a three-dimensional hydraulic fracture network in fractured shale reservoirs remain unclear, especially when the scale fractures is much larger than that natural fractures. In this study, taking well XH Longmaxi reservoir Sichuan Basin, China as an example, we develop fully numerical model for fracturing coupled with microseismicity based on discrete lattice method. We introduce randomly generated into proposed explore under condition are...

10.3390/en14248297 article EN cc-by Energies 2021-12-09

ABSTRACT: Field practices have demonstrated that inter-well interference can lead to increased annular pressure in adjacent wells, increasing the risk of casing deformation and ultimately affecting production. Inter-well has become a "bottleneck" issue limiting development shale gas, necessitating urgent research on its mechanisms. Taking L well area southern region Sichuan Basin as object, this article establishes numerical simulation model for fracturing exploitation deep gas horizontal...

10.56952/arma-2024-0182 article EN 50th U.S. Rock Mechanics/Geomechanics Symposium 2024-06-23

Simulations of landslide run-out can avoid the limit experiment and instrumentation. It observe movement processes in detail. is essential to quantitative hazard assessment for landslide. simulation movement, primary work establish a model. Although Particle Flow Code (PFC) one most widely used program modeling, it weak pre-processing building This limits its application modeling. As this, this paper illustrates applicability, advantages disadvantages Ball-Ball Ball-Wall methods model...

10.13544/j.cnki.jeg.2017.02.024 article EN 工程地质学报 2017-04-01

On-line automatic inspection system for measuring the tire geometry is proposed with dedicated machine vision design. A sequence of images are acquired while a object passes through system. The geometry, including cutting edge, angle and width, represents quality sequential objects that connected together to make inner belt. line matching algorithm developed measure automatically. With input standard model Line Detection Priori (LDP) conducted locate candidate lines interest in high speed....

10.1109/icma.2015.7237784 article EN 2022 IEEE International Conference on Mechatronics and Automation (ICMA) 2015-08-01

Ambisonics, a sound field reproduction technique, can present spatial audio with high accuracy. However, it has not been widely adopted due to the hardware requirements imposes. In consequence, very few Ambisonics encoded contents are available. End-users will find more attractive invest in systems if they be made backwards compatible existing recordings. this paper, technique spatially extrapolate stereo sources for listening using is introduced. The proposed approach makes use of...

10.1109/iih-msp.2013.83 article EN 2013-10-01

10.4156/jdcta.vol7.issue8.32 article EN International Journal of Digital Content Technology and its Applications 2013-04-30

The key to modeling the interlocking of geogrid-reinforced ballast is considering both continuous deformation characteristics geogrid and discontinuity particles. For this purpose, pullout tests using biaxial triaxial geogrids were simulated coupled discrete element method (DEM) finite difference (FDM). In model, two real-shaped models with square triangular apertures established solid in FLAC3D. Meanwhile, simplified shaped clumps used represent PFC3D. calibration test simulation showed...

10.3390/app11199001 article EN cc-by Applied Sciences 2021-09-27

The existing methods—such as sieving, microscope, light scattering, sedimentation, and electrical induction for pigment size detection—require sampling or scattering the mineral pigments, which will inevitably cause damage to films painted by pigments. A new detection method based on run length texture analysis is proposed nondestructively detect in paint film. pigments with preknown sizes are contactlessly captured CCD microscope under diffused light. Gray transform, histogram equalization,...

10.1117/1.jei.26.1.011002 article EN Journal of Electronic Imaging 2016-10-18

Service Availability is an important method meeting adaptive and general requirements of service failure detection largely affected by indexes. Therefore, how to select appropriate indicators issue. However, only small number in the existing availability mechanism can't accurately describe complex situation a distributed system, thus difficult meet QoS applications. After researching on algorithms, applications' failures network survivability, this paper proposes hierarchical index system...

10.1109/iccsnt.2011.6181934 article EN 2011-12-01
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