Education
Ph.D. University of Massachusetts
MS    University of Massachusetts
BS     Cornell University


Dr. Abdulelah Al-Faraj, (Ph.D. graduate), King Saud University, Saudi Arabia performed a dynamic analysis of leaf moisture stress, using thermal methods.

 
Controlled environment calorimetry and gas exchange.

 
Simulation of plant canopy architecture using OPENGL.

 
Dr. Tim Hindman (former National Needs Ph.D. fellow) works on a neural-fuzzy logic machine vision - crop residue problem.

 
Dr. Joćo Camargo Neto (EMBRAPA - Brazil) Ph.D. graduate is working on machine vision weed species identification and mapping software.

Whole leaf extraction, weed species identification, and mapping from complex, connected component field canopies.

George Meyer's Home Page
Professor of Biological Systems Engineering
250 L.W. Chase Hall
University of Nebraska
Lincoln, Nebraska 68583-0726
(402) 472-3377 (Voice)   (402) 472-6338 (Fax)
E-mail: gmeyer1@unl.edu

Areas of interest

Research includes machine vision, electronic instrumentation, optical sensors (thermal and spectral) for plant growth response, water use, crop, weed, and residue detection, identification, enumeration, and identification of plant species, plant physiological properties and stress, applied to either field or  greenhouse site specific crop management. Discriminate analyses, soft computing methods, fuzzy logic, and neural-network systems are used for classification, modeling, and control of plant growth systems.

Teaching includes undergraduate and graduate courses: Thermodynamics of Living Systems, Instrumentation and Controls, and Advanced Modeling in Biological and Environmental Systems. Teaching methods include multimedia and computer applications.

Selected Publications

Woebbecke, D.M., A. Al-Faraj, and G.E. Meyer. 1994. Calibration of Large Field of View Thermal and Optical Sensors for Plant and Soil. TRANSACTIONS of the ASAE 37(2): 669-677.

Meyer, G.E., M.R. Fletcher, and J.B. Fitzgerald.  1994.  Calibration and Use of a Pyroelectric Thermal Camera and Imaging System for Greenhouse Infrared Heating Evaluation. Computers and Electronics in Agriculture 10:215-227.

Al-Faraj, A., G.E. Meyer, and J.B. Fitzgerald, 1994. Simulated Water Use and Canopy  Resistance of New Guinea Impatiens (Impatiens X hb.) in Single Pots Using Infrared Heating. TRANSACTIONS of ASAE,37(6):1973-1980.

Woebbecke, D.M., G.E. Meyer, K. Von Bargen, and D.A. Mortensen.  1995.  Color Indices for Weed Identification Under Various Soil Residue and Lighting Conditions.   TRANSACTIONS of the ASAE. 38(1)259-269.

Woebbecke, D.M., G.E. Meyer, K. Von Bargen, and D.A. Mortensen. 1995.  Shape Features for Identifying Young Weeds Using Image Analysis.   TRANSACTIONS of the ASAE. 38(1):271-281.

Blackmer. T.M., J.S. Schepers, and G.E. Meyer, 1996. Analysis of Aerial Photography for Nitrogen Stress Within Corn Fields. Agronomy Journal 88(5):729-733.

Meyer, G.E., J.K. Randall, and C.T. Morrow, 1996. Teaching Instrumentation and Controls using Multimedia and Television Instructional Methods.  ASEE Annual Conference Proceedings,  Available on CD ROM.

Meyer G.E., T. Mehta, M. F. Kocher,, D. A. Mortensen, and A. Samal.1998. Textural Imaging and Discriminate Analysis for Distinguishing Weeds for Spot Spraying. TRANSACTIONS of ASAE, 41(4): 1189-1197.

Al-Faraj, A. G.E. Meyer, G.R.  Schade, and G.L. Horst. 2000. Dynamic Analysis of Moisture Stress in Tall Fescue (Festuca Arundinacea) Using Canopy Temperature, Irradiation, and Vapor Deficit.  TRANSACTIONS of ASAE 43(1):101-109. 

Al-Faraj , G.E. Meyer, and G.L. Horst. 2001 A Crop Water Stress Index for Tall Fescue (Festuca arundinacea Schreb.) Irrigation Decision-making - A Traditional Method. Computers and Electronics in Agriculture (Elsevier) 31(2):107-124.

Meyer G.E, 2001. History and progress of optical weed detection and discrimination for spot spraying control. In J.A. DeShazer and G.E. Meyer (ed). Optics in Agriculture 1990-2000, A Critical Review SPIE Optical Engineering Press, Bellingham, WA (ISBN 0-8194-3884-7), pp 101-139

Lin, X., K.G. Hubbard, and G.E. Meyer, 2001. Air flow characteristics of commonly used temperature radiation shields. J. Atmos. Oceanic Tech, 18(3):329-339. 

Lin, X., K.G. Hubbard, E.A. Walter-Shea, J,R. Brandle and G.E. Meyer, 2001.  Some perspectives on recent in-situ air temperature observations: modeling the microclimate inside radiation shields. J. Atmos. Oceanic Tech.  18(9):1470-1484.

Al-Faraj A., G.E. Meyer, and G.L. Horst. 2001 A Crop Water Stress Index for Tall Fescue (Festuca arundinacea Schreb.) Irrigation Decision-making - A Fuzzy Logic Method, Computers and Electronics in Agriculture (Elsevier), 32(2):69-84.

Meyer, G. E. 2003. Thermodynamics for Living Systems, A Core Course. Session 2108, American Society of Engineering Education, Annual Conference Proceedings, on CD-ROM.

Meyer, G.E., R. M. Brand, Gary DeBerg 2003 Flow Measurement. in D.R. Heldman (ed) Encyclopedia of Agricultural, Food, and Biological Engineering, Marcel Dekker, inc., ISBN: 0-8247-4266-4, pp 337 – 341.

Meyer, G. E., J. Camargo Neto, D. D. Jones, T. W. Hindman. 2004 Intensified fuzzy clusters for determining plant, soil, and residue regions of interest from color images. Computers and Electronics in Agriculture, 42(3):161-180.

Meyer, G. E., T. W. Hindman,  D.D. Jones, D. A. Mortensen. 2004.  Digital camera operation and fuzzy logic classification of plant, soil, and residue color images. Engineering in Agriculture, 20(4):519-529.

 

Meyer, G. E., J. Camargo  Neto,  and D. D. Jones. 2004. Assessment tools for fuzzy clustered regions of interest for site specific crop management. In B.S. Bennedsen, Y.R. Chen, G.E. Meyer, A.G. Senecal, and S. Tu (ed). Monitoring Food Safety, Agriculture, and Plant Health. SPIE, Optical Engineering Press, Bellingham, WA. (ISBN 0-8194-5160-6), pp 253-264.

 

Heckman ,N.,  G.E. Meyer, G.L. Horst,  R. Gaussoin, 2004.    Direct calorimetric analysis of turf grass sod for storage life assessment. Scientia Horticulturae (Elsevier), 102(4):1-10.