Lei Tian

Director, Illinois Laboratory for Agricultural Remote Sensing

19972018
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Research Output 1997 2018

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Article
2016

Development of methods to improve soybean yield estimation and predict plant maturity with an unmanned aerial vehicle based platform

Yu, N., Li, L., Schmitz, N., Tian, L. F., Greenberg, J. A. & Diers, B. W., Dec 15 2016, In : Remote Sensing of Environment. 187, p. 91-101 11 p.

Research output: Contribution to journalArticle

Unmanned aerial vehicles (UAV)
soybean
Throughput
soybeans
phenotype
2015

Additional yaw moment control of a 4WIS and 4WID agricultural data acquisition vehicle

Jiang, D., Li, D., Wang, S., Tian, L. & Yang, L., Jun 24 2015, In : International Journal of Advanced Robotic Systems. 12

Research output: Contribution to journalArticle

Data acquisition
Wheels
Crops
Control systems
Gages
2014

Design and development of a variable ground clearance, variable wheel track self-leveling hillside vehicle power chassis (V2-HVPC)

Gao, Q., Gao, F., Tian, L., Li, L., Ding, N., Xu, G. & Jiang, D., Dec 2014, In : Journal of Terramechanics. 56, p. 77-90 14 p.

Research output: Contribution to journalArticle

Chassis
Wheels
Axles
Power transmission
Crops

Development of a 3D ego-motion estimation system for an autonomous agricultural vehicle

Jiang, D., Yang, L., Li, D., Gao, F., Tian, L. & Li, L., May 2014, In : Biosystems Engineering. 121, p. 150-159 10 p.

Research output: Contribution to journalArticle

Ego
Motion estimation
Mean square error
Poaceae
heading

Estimation of soil fertility using collocated cokriging by combining aerial hyperspectral imagery and soil sample data

Yao, H., Tian, L., Wang, G. & Colonna, I., 2014, In : Applied Engineering in Agriculture. 30, 1, p. 113-121 9 p.

Research output: Contribution to journalArticle

Antennas
Soils
Mean square error
Interpolation
2012

Development of the reconfigurable data acquisition vehicle for bio-energy crop sensing and management

Xiong, Y., Tian, L., Ahamed, T. & Zhao, B., Jan 12 2012, In : Journal of Mechanical Design, Transactions Of the ASME. 134, 1, 015001.

Research output: Contribution to journalArticle

Crops
Data acquisition
Wheels
Gages
Maneuverability

Normalized coupling method for speed synchronization of multi-axis driving vehicles

Bin, Z., Feng, G. & Tian, L., Aug 10 2012, In : International Journal of Advanced Robotic Systems. 9, 55.

Research output: Contribution to journalArticle

Synchronization
Wheels
Four wheel steering

Tower remote-sensing system for monitoring energy crops; image acquisition and geometric corrections

Ahamed, T., Tian, L., Jiang, Y., Zhao, B., Liu, H. & Ting, K. C., Jun 1 2012, In : Biosystems Engineering. 112, 2, p. 93-107 15 p.

Research output: Contribution to journalArticle

energy crop
Image acquisition
energy crops
cameras
Towers
2011

An automated stand-alone in-field remote sensing system (SIRSS) for in-season crop monitoring

Xiang, H. & Tian, L., Aug 1 2011, In : Computers and Electronics in Agriculture. 78, 1, p. 1-8 8 p.

Research output: Contribution to journalArticle

Crops
remote sensing
Remote sensing
crop
Monitoring

Development of a low-cost agricultural remote sensing system based on an autonomous unmanned aerial vehicle (UAV)

Xiang, H. & Tian, L., Feb 1 2011, In : Biosystems Engineering. 108, 2, p. 174-190 17 p.

Research output: Contribution to journalArticle

Unmanned aerial vehicles (UAV)
remote sensing
Remote sensing
glyphosate
Costs and Cost Analysis

Method for automatic georeferencing aerial remote sensing (RS) images from an unmanned aerial vehicle (UAV) platform

Xiang, H. & Tian, L., Feb 1 2011, In : Biosystems Engineering. 108, 2, p. 104-113 10 p.

Research output: Contribution to journalArticle

Geographic Mapping
georeferencing
Unmanned aerial vehicles (UAV)
cameras
geocoding

Robust crop and weed segmentation under uncontrolled outdoor illumination

Jeon, H. Y., Tian, L. F. & Zhu, H., Jun 1 2011, In : Sensors. 11, 6, p. 6270-6283 14 p.

Research output: Contribution to journalArticle

crops
Lighting
Crops
illumination
Plant Weeds

Soybean seeds selection based on computer vision

Wang, R., Zhang, C., Fang, J., Wang, S., Yang, F. & Tian, L., Aug 1 2011, In : Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering. 27, 8, p. 355-359 5 p.

Research output: Contribution to journalArticle

computer vision
Soybeans
Computer vision
Seed
Seeds

Stereovision-based lateral offset measurement for vehicle navigation in cultivated stubble fields

Wang, Q., Zhang, Q., Rovira-Más, F. & Tian, L., Aug 1 2011, In : Biosystems Engineering. 109, 4, p. 258-265 8 p.

Research output: Contribution to journalArticle

stubble
navigation
Navigation
cameras
Cameras
2010

Measuring particle size distribution using LED-illumination

Jiang, Y., Jeon, H. Y., Tian, L. & Bode, L. E., Mar 1 2010, In : International Journal of Multiphase Flow. 36, 3, p. 193-201 9 p.

Research output: Contribution to journalArticle

particle size distribution
Particle size analysis
Light emitting diodes
sprayers
light emitting diodes

Real-time NDVI measurement using a low-cost panchromatic sensor for a mobile robot platform

Zhao, B., Tian, L. & Ahamed, T., 2010, In : Environmental Control in Biology. 48, 2, p. 73-79 7 p.

Research output: Contribution to journalArticle

robots
sensors (equipment)
animal communication
normalized difference vegetation index
plant growth
2009

Development of auto-hitching navigation system for farm implements using laser range finder

Ahamed, T., Tian, L., Takigawa, T. & Zhang, Y., Sep 1 2009, In : Transactions of the ASABE. 52, 5, p. 1793-1803 11 p.

Research output: Contribution to journalArticle

Range finders
Navigation systems
tractors
automobiles
Farms

Direct application end effector for a precise weed control robot

Jeon, H. Y. & Tian, L. F., Dec 1 2009, In : Biosystems Engineering. 104, 4, p. 458-464 7 p.

Research output: Contribution to journalArticle

Weed control
Weed Control
robots
weed control
Herbicides

Research on precise feeding system of dairy cattle

Fan, Y., Zhang, C., Dong, S. & Tian, L., Sep 1 2009, In : Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery. 40, SUPPL. 1

Research output: Contribution to journalArticle

Dairies
dairy cattle
Radio Frequency Identification Device
Research
Equipment and Supplies
2008

Plant identification in mosaicked crop row images for automatic emerged corn plant spacing measurement

Tang, L. & Tian, L. F., Jan 1 2008, In : Transactions of the ASABE. 51, 6, p. 2181-2191 11 p.

Research output: Contribution to journalArticle

Zea mays
Crops
spacing
maize
spatial distribution

Real-time crop row image reconstruction for automatic emerged corn plant spacing measurement

Tang, L. & Tian, L. F., May 1 2008, In : Transactions of the ASABE. 51, 3, p. 1079-1087 9 p.

Research output: Contribution to journalArticle

Computer-Assisted Image Processing
Image reconstruction
Zea mays
Crops
spacing
2007

Artificial intelligence controller for automatic multispectral camera parameter adjustment

Xiang, H. & Tian, L., Sep 2007, In : Transactions of the ASABE. 50, 5, p. 1873-1881 9 p.

Research output: Contribution to journalArticle

artificial intelligence
Artificial Intelligence
controllers
Lighting
cameras

Field-scale surface soil moisture patterns and their relationship to topographic indices

Kaleita, A. L., Hirschi, M. C. & Tian, L. F., Mar 1 2007, In : Transactions of the ASABE. 50, 2, p. 557-564 8 p.

Research output: Contribution to journalArticle

Soil moisture
Moisture
Soil
soil moisture
moisture
2005

Development of weeding robot based on direct herbicide application method

Chen, Y., Tian, L. & Zheng, J., Oct 1 2005, In : Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery. 36, 10, p. 91-93+129

Research output: Contribution to journalArticle

robots
Herbicides
Robotics
application methods
pesticide application

Relationship between soil moisture content and soil surface reflectance

Kaleita, A. L., Tian, L. & Hirschi, M. C., Sep 2005, In : Transactions of the American Society of Agricultural Engineers. 48, 5, p. 1979-1986 8 p.

Research output: Contribution to journalArticle

surface reflectance
Soil moisture
reflectance
soil water content
moisture content

Site-specific study of corn protein, oil, and extractable starch variability using nit spectroscopy

Singh, M., Paulsen, M. R., Tian, L. & Yao, H., Mar 1 2005, In : Applied Engineering in Agriculture. 21, 2, p. 239-251 13 p.

Research output: Contribution to journalArticle

Starch
Spectroscopy
Nitrogen
Proteins
Infrared transmission

Soil fertility characterization in agricultural fields using hyperspectral remote sensing

Bajwa, S. G. & Tian, L. F., Nov 1 2005, In : Transactions of the American Society of Agricultural Engineers. 48, 6, p. 2399-2406 8 p.

Research output: Contribution to journalArticle

soil fertility
remote sensing
Fertility
Remote sensing
Soil
2004

A review on remote sensing of weeds in agriculture

Thorp, K. R. & Tian, L. F., Oct 1 2004, In : Precision Agriculture. 5, 5, p. 477-508 32 p.

Research output: Contribution to journalArticle

Agriculture
remote sensing
weeds
agriculture
Herbicides

Hyperspectral image data mining for band selection in agricultural applications

Bajwa, S. G., Bajcsy, P., Groves, P. & Tian, L., May 2004, In : Transactions of the American Society of Agricultural Engineers. 47, 3, p. 895-907 13 p.

Research output: Contribution to journalArticle

hyperspectral imagery
agricultural application
Data Mining
data mining
Principal component analysis

Narrow-band and derivative-based vegetation indices for hyperspectral data

Thorp, K. R., Tian, L., Yao, H. & Tang, L., Jan 1 2004, In : Transactions of the American Society of Agricultural Engineers. 47, 1, p. 291-299 9 p.

Research output: Contribution to journalArticle

Imagery (Psychotherapy)
vegetation index
remote sensing
wavelengths
hyperspectral imagery

Performance study of variable-rate herbicide applications based on remote sensing imagery

Thorp, K. R. & Tian, L., May 2004, In : Biosystems Engineering. 88, 1, p. 35-47 13 p.

Research output: Contribution to journalArticle

Weed control
Herbicides
Imagery (Psychotherapy)
Weed Control
pesticide application

Practical methods for geometric distortion correction of aerial hyperspectral imagery

Yao, H. & Tian, L., May 1 2004, In : Applied Engineering in Agriculture. 20, 3, p. 367-375 9 p.

Research output: Contribution to journalArticle

Antennas
Sensors
Image processing
Pixels
Image acquisition

Reduced-dimension clustering for vegetation segmentation

Steward, B. L., Tian, L. F., Nettleton, D. & Tang, L., Mar 1 2004, In : Transactions of the American Society of Agricultural Engineers. 47, 2, p. 609-616 8 p.

Research output: Contribution to journalArticle

segmentation
Cluster Analysis
Classifiers
vegetation
Lighting
2003
genetic algorithm
Principal component analysis
Feature extraction
principal component analysis
Genetic algorithms

Classification of Broadleaf and Grass Weeds Using Gabor Wavelets and an Artificial Neural Network

Tang, L., Tian, L. & Steward, B. L., Jul 1 2003, In : Transactions of the American Society of Agricultural Engineers. 46, 4, p. 1247-1254 8 p.

Research output: Contribution to journalArticle

broadleaf weeds
grass weeds
Poaceae
artificial neural network
neural networks
2002

Development of a sensor-based precision herbicide application system

Tian, L., Nov 1 2002, In : Computers and Electronics in Agriculture. 36, 2-3, p. 133-149 17 p.

Research output: Contribution to journalArticle

Herbicides
pesticide application
sensors (equipment)
weed
herbicide

Distance-based control system for machine vision-based selective spraying

Steward, B. L., Tian, L. & Tang, L., Sep 1 2002, In : Transactions of the American Society of Agricultural Engineers. 45, 5, p. 1255-1262 8 p.

Research output: Contribution to journalArticle

computer vision
Herbicides
Spraying
spraying
Computer vision

Multispectral CIR image calibration for cloud shadow and soil background influence using intensity normalization

Bajwa, S. G. & Tian, L., Sep 1 2002, In : Applied Engineering in Agriculture. 18, 5, p. 627-635 9 p.

Research output: Contribution to journalArticle

Calibration
calibration
Soil
Soils
Lighting
2001

Aerial CIR remote sensing for weed density mapping in a soybean field

Bajwa, S. G. & Tian, L., 2001, In : Transactions of the American Society of Agricultural Engineers. 44, 6, p. 1965-1974 10 p.

Research output: Contribution to journalArticle

Soybeans
Spatial distribution
remote sensing
weed
soybean

A neural network for setting target corn yields

Liu, J., Goering, C. E. & Tian, L., Jan 1 2001, In : Transactions of the American Society of Agricultural Engineers. 44, 3, p. 705-713 9 p.

Research output: Contribution to journalArticle

Agriculture
neural networks
Zea mays
maize
Neural networks

Time shift evaluation to improve yield map quality

Beal, J. P. & Tian, L., May 2001, In : Applied Engineering in Agriculture. 17, 3, p. 385-390 6 p.

Research output: Contribution to journalArticle

surface area
precision agriculture
Crops
Agriculture
Soybeans
2000

Color image segmentation with genetic algorithm for in-field weed sensing

Tang, L., Tian, L. & Steward, B. L., Jul 1 2000, In : Transactions of the American Society of Agricultural Engineers. 43, 4, p. 1019-1027 9 p.

Research output: Contribution to journalArticle

Image segmentation
genetic algorithm
segmentation
weed
Color

Dynamic deposition pattern simulation of modulated spraying

Tian, L. & Zheng, J., Jan 1 2000, In : Transactions of the American Society of Agricultural Engineers. 43, 1, p. 5-11 7 p.

Research output: Contribution to journalArticle

Spraying
spraying
spray
nozzles
Nozzles

Smart sprayer project: Sensor-based selective herbicide application system

Tian, L., Steward, B. & Tang, L., Jan 1 2000, In : Proceedings of SPIE - The International Society for Optical Engineering. 4203, p. 73-80 8 p.

Research output: Contribution to journalArticle

herbicides
Herbicides
sprayers
Sensor
sensors
1999

Development of a precision sprayer for site-specific weed management

Tian, L., Reid, J. F. & Hummel, J. W., Jul 1 1999, In : Transactions of the American Society of Agricultural Engineers. 42, 4, p. 893-900 8 p.

Research output: Contribution to journalArticle

Herbicides
sprayers
weed
weed control
herbicide

Evaluation of a flow control system for site-specific herbicide applications

Gopalapillai, S., Tian, L. & Zheng, J., Jul 1 1999, In : Transactions of the American Society of Agricultural Engineers. 42, 4, p. 863-870 8 p.

Research output: Contribution to journalArticle

flow control
Herbicides
Flow control
pesticide application
control system

In-field variability detection and spatial yield modeling for corn using digital aerial imaging

Gopalapillai, S. & Tian, L., Nov 1999, In : Transactions of the American Society of Agricultural Engineers. 42, 6, p. 1911-1920 10 p.

Research output: Contribution to journalArticle

Zea mays
Color
maize
image analysis
Antennas

Machine-vision weed density estimation for real-time, outdoor lighting conditions

Steward, B. L. & Tian, L. F., Nov 1 1999, In : Transactions of the American Society of Agricultural Engineers. 42, 6, p. 1897-1909 13 p.

Research output: Contribution to journalArticle

computer vision
Lighting
Computer vision
weed
lighting

Real-time weed detection in outdoor field conditions

Steward, B. L. & Tian, L., 1999, In : Proceedings of SPIE - The International Society for Optical Engineering. 3543, p. 266-278 13 p.

Research output: Contribution to journalArticle

Real-time
Segmentation
Computer vision
Machine Vision
Color
1998

Environmentally adaptive segmentation algorithm for outdoor image segmentation

Tian, L. & Slaughter, D. C., Dec 1998, In : Computers and Electronics in Agriculture. 21, 3, p. 153-168 16 p.

Research output: Contribution to journalArticle

Image segmentation
segmentation
Supervised learning
Light sources
lighting