Jan van Aardt

Jan van Aardt's picture

Research Details

Research Interests
Application of imaging spectroscopy and light detection and ranging (lidar) for spectral-structural characterization of natural systems (remote sensing of natural resources)
  • Forestry (vegetation) inventory and assessment
  • Species diversity
  • Foliar biochemistry
  • Scaling of remote sensing estimates

Personal Information

Contact Information
Office: 76-3124
Phone: (585)475-4229
Fax: (585)475-5988
Email: vanaardt@cis.rit.edu

54 Lomb Memorial Dr.
Rochester NY 14623
Title and Degrees
Associate Professor, Imaging Science

B.Sc. Forestry (University of Stellenbosch, South Africa) - 1996
Hons. Forestry (University of Stellenbosch, South Africa) - 1998
MS Forestry (Virginia Tech, Virginia, USA) - 2000
PhD Forestry (Virginia Tech, Virginia, USA) - 2004

Current Projects:

  • Structural characterization of woody and herbaceous vegetation using small-footprint waveform lidar and imaging spectroscopy data
    • Data fusion
    • Pixel unmixing approaches
    • Woody and herbaceous biomass assessment
    • Land degradation assessment
    • Collaborators: Carnegie Institution for Science, Council for Scientific and Industrial Research, Wits University, Kruger National Park (South Africa)
  • Plantation structural assessment using active and passive remote sensing
    • Includes high spectral-, high spatial resolution, and lidar-based approaches
    • Collaborators: Council for Scientific and Industrial Research (South Africa)
  • Forest volume and biomass assessment using lidar remote sensing
    • Sampling approaches
    • Fire fuel load assessment
    • Collaborators: Virginia Polytechnic Institute and State University & Council for Scientific and Industrial Research (South Africa)

Current graduate & undergraduate students (RIT):

  • David Kelbe* (PhD-RIT): Waveform lidar algorithms for natural resource applications
  • Paul Romanczyk* (PhD-RIT): Waveform lidar simulation for structural metric extraction
  • Madhurima Bandyopadhyay* (PhD-RIT): Urban forest mapping from dense discrete lidar point clouds
  • Wei Yao* (PhD-RIT): Investigating the impact of spatially-explicit sub-pixel structural variation on the assessment of vegetation structure from HyspIRI data
  • Jolene Fisher (PhD-Wits University, South Africa): Characterization of savanna woody structure using discrete return lidar
  • Nicole Dutcher (MS-RIT): Characterizing Wetland Vegetation Using Hyperspectral Imagery for Monitoring Purposes

  • Colin Axel** (RIT): Registration of RGB imagery and ground-based lidar point clouds

  • *Primary adviser
    **Undergraduate students

Past graduate & undergraduate students (RIT):

  • Shagan Sah* (MS-RIT; 2013): Rapid land cover classification approaches for mapping post-disaster nuclear ingestion pathways
  • William Wu* (PhD-RIT; 2012): Waveform lidar preprocessing & 3D modeling
  • Nahid Carter (MS-RIT; 2012): Classification of tree species in upstate New York towards assessing the impact of emerald ash borer infestation
  • Thamsanqa Mzinyane (PhD-UKZN, South Africa; 2012): Hyperspectral assessment of biophysical parameters in Eucalyptus plantations
  • Rick Labiak* (MS-RIT; 2011): Remote sensing disaster response algorithms: Building damage and debris assessment using a stand-alone discrete return lidar approach
  • Joe McGlinchy* (MS-RIT; 2011): Unmixing lidar waveforms into structural target components
  • Katherine Premo (MS-RIT; 2011): Invertebrate effects on sediment biogeochemistry and microphytobenthos during and after macroalgal blooms
  • Diane Sarrazin* (MS-RIT; 2010): Fusion of waveform and hyperspectral data for improved species classification and biomass estimation
  • Wesley Roberts (PhD-UKZN, South Africa; 2010): Image fusion for enhanced forest structure assessment
  • Solomon Tesfamichael (PhD-UKZN, South Africa; 2009): Assessment of structural attributes of even-aged Eucalyptus grandis forest plantations using small-footprint discrete return lidar data
  • Michael Gebreslasie (PhD-UKZN, South Africa; 2009): The estimation of Eucalyptus plantation forest structural attributes using medium and high spatial resolution satellite imagery

  • Kevin Bloechl** (RIT; 2012): Ground-based lidar: Point cloud registration
  • Linnea Tullson** (RIT; 2012): Ground-based lidar: 3D object extraction and identification (natural targets)
  • Thomas Yang** (RIT; 2012): Ground-based lidar: 3D object extraction and identification (man-made targets)
  • Jonathan Lueders** (RIT; 2012): Leaf- and canopy-level assessment of vineyard moisture status

  • *Primary adviser
    **Undergraduate students

Scholarships/Awards

  • RIT - RIT Principal Investigators Millionaires Club (2012)
  • RIT COS - COS Outstanding Faculty of the Year Award (2012)
  • American Society for Photogrammetry and Remote Sensing (ASPRS) - 2009 ERDAS Award for Best Scientific Paper in Remote Sensing (2009)

Publications

REFEREED JOURNAL ARTICLES

    Fisher, J.; Erasmus, B.F.; Witkowski, E.; van Aardt, J.A.; Asner, G.P.; Wessels, K.; Mathieu, R., Management approaches of conservation areas: Differences in woody vegetation structure in a private and a national reserve, South African Journal of Botany, 90, pp. 146-152 (2014)

    McGlinchy, J.; van Aardt, J.A.; Erasmus, B.F.; Asner, G.P.; Mathieu, R.; Wessels, K.; Knapp, D.; Kennedy-Bowdoin, T.; Rhody, H.E.; Kerekes, J.P.; Ientilucci, E.J.; Wu, J.; Sarrazin, D.; Cawse-Nicholson, K.A., Extracting Structural Vegetation Components From Small-Footprint Waveform Lidar for Biomass Estimation in Savanna Ecosystems, IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 7, 2, pp. 480-490 (2014)

    Wu, J.; Cawse-Nicholson, K.A.; van Aardt, J.A., 3D Tree Reconstruction from Simulated Small Footprint Waveform Lidar, Photogrammetric Engineering and Remote Sensing, 79, 12, pp. 1147-1157 (2013)

    Mathieu, R.; Naidoo, L.; Cho, M.; Leblon, B; Main, R.; Wessels, K.; Asner, G.P.; Buckley, J; van Aardt, J.A.; Erasmus, B.F.; Smit, I.P., Toward structural assessment of semi-arid African savannahs and woodlands: The potential of multitemporal polarimetric RADARSAT-2 fine beam images, Remote Sensing of Environment, 138, pp. 215-231 (2013)

    Fisher, J.; Erasmus, B.F.; Witkowski, E.; van Aardt, J.A.; Wessels, K.; Asner, G.P., Savanna woody vegetation classification – now in 3-D, Applied Vegetation Science, Doi: 10.1111/avsc.12048, pp. 1-13 (2013)

    Wessels, K.; Colgan, M.; Erasmus, B.F.; Asner, G.P.; Twine, W.; Mathieu, R.; van Aardt, J.A.; Fisher, J.; Smit, I.P., Unsustainable fuelwood extraction from South African savannas, Environmental Research Letters, 8, 014007, pp. 1-10 (2013)

    Cho, M.A.; Mathieu, R.; Asner, G.P.; Naidoo, L.; van Aardt, J.A.; Ramoelo, A.; Debba, P.; Wessels, K.; Main, R.; Smit, I.P.; Erasmus, B.F., Mapping tree species composition in South African savannas using an integrated airborne spectral and LiDAR system, Remote Sensing of the Environment, 125, pp. 214-226 (2012)

    Wu, J.; van Aardt, J.A.; McGlinchy, J.; Asner, G.P., A Robust Signal Preprocessing Chain for Small-Footprint Waveform LiDAR, IEEE Transactions on Geoscience and Remote Sensing , 50, 8, pp. 3242-3255 (2012)

    Fisher, J.; Witkowski, E.; Erasmus, B.F.; van Aardt, J.A.; Asner, G.P.; Wessels, K.; Mathieu, R., Human-modified landscapes: patterns of fine-scale woody vegetation structure in communal savannah rangelands, Environmental Conservation, 39, 1, pp. 72-82 (2012)

    Sarrazin, D.; van Aardt, J.A.; Asner, G.P.; McGlinchy, J.; Messinger, D.W.; Wu, J., Fusing small-footprint waveform LiDAR and hyperspectral data for canopy-level species classification and herbaceous biomass modeling in savanna ecosystems, Canadian Journal of Remote Sensing, 37, 6, pp. 653-665 (2011)

    van Aardt, J.A.; McKeown, D.; Faulring, J.W.; Raqueno, N.G.; Casterline, M.V.; Renschler, C.; Eguchi, R.; Messinger, D.W.; Krzaczek, R.S.; Cavillia, S.; Antalovich, J.; Philips, N.; Bartlett, B.D.; Salvaggio, C.; Ontiveros, E.M.; Gill, S., Geospatial disaster response during the Haiti earthquake: A case study spanning airborne deployment, data collection, transfer, processing, and dissemination, Photogrammetric Engineering and Remote Sensing, 77, 9, pp. 943-952 (2011)

    Gebreslasie, M.T.; Ahmed, F.; van Aardt, J.A., Extracting structural attributes from IKONOS imagery for Eucalyptus plantation forests in KwaZulu-Natal, South Africa, using image texture analysis and artificial neural networks, International Journal of Remote Sensing, DOI:10.1080/01431161, pp. 1-25 (2011)

    Gebreslasie, M.T.; Ahmed, F.; van Aardt, J.A.; Blakeway, F., Individual tree detection based on variable and fixed window size local maxima filtering applied to IKONOS imagery for even-aged Eucalyptus plantation forests, International Journal of Remote Sensing, 32, 15, pp. 4141-4154 (2011)

    Wu, J.; van Aardt, J.A.; Asner, G.P., A Comparison of Signal Deconvolution Algorithms Based on Small-Footprint LiDAR Waveform Simulation, IEEE Transactions on Geoscience and Remote Sensing , 49, 6, pp. 2402-2414 (2011)

    Roberts, W.J.; van Aardt, J.A.; Ahmed, F., Image fusion for enhanced forest structural assessment, International Journal of Remote Sensing, 32, 1, pp. 243-266 (2011)

    Wessels, K.; Mathieu, R.; Erasmus, B.F.; Asner, G.P.; Smit, I.P.; van Aardt, J.A.; Main, R.; Fisher, J.; Marais, W; Kennedy-Bowdoin, T.; Knapp, D.; Emerson R.; Jacobson J., Impact of communal land use and conservation on woody vegetation structure in the Lowveld savannas of South Africa, Forest Ecology and Management, 261, 2011, pp. 19-29 (2011)

    Cho, M.A.; Debba, P.; Mathieu, R.; Naidoo, L.; van Aardt, J.A.; Asner, G.P., Improving discrimination of savanna tree species through a multiple endmember spectral angle mapper approach: Canopy-level analysis, IEEE Transactions on Geoscience and Remote Sensing , 48, 11, pp. 4133-4142 (2010)

    Somers, B.; Delalieux, S.; Verstraeten, W.; van Aardt, J.A.; Albrigo, G.; Coppin, P., An automated waveband selection technique for optimized hyperspectral mixture analysis, International Journal of Remote Sensing, 31, 20, pp. 5549-5568 (2010)

    Tesfamichael, S.G.; Ahmed, F.; van Aardt, J.A., Investigating the impact of discrete-return lidar point density on estimations of mean and dominant plot-level tree height in Eucalyptus grandis plantations, International Journal of Remote Sensing, 31, 11, pp. 2925-2940 (2010)

    Cho, M.A.; van Aardt, J.A.; Main, R.; Majeke, B., Evaluating variations of physiology-based hyperspectral features along a soil water gradient in a Eucalyptus grandis plantation, International Journal of Remote Sensing, 31, 12, pp. 3143-3159 (2010)

    Tesfamichael, S.G.; van Aardt, J.A.; Ahmed, F., Estimating plot-level tree height and volume of Eucalyptus grandis plantations using small-footprint, discrete return lidar data, Progress in Physical Geography, 34, 4, pp. 515-540 (2010)

    Gebreslasie, M.T.; Ahmed, F.; van Aardt, J.A., Predicting forest structural attributes using ancillary data and ASTER satellite data, International Journal of Applied Earth Observation and Geoinformation, 12S, 2010, pp. S23-S26 (2010)

    Mutanga, O.; van Aardt, J.A.; Kumar, L., Imaging spectroscopy (hyperspectral remote sensing) in southern Africa: an overview, South African Journal of Science, 105, pp. 193-198 (2009)

    Delalieux, S.; Somers, B.; Verstraeten, W.; van Aardt, J.A.; Keulemans, W.; Coppin, P., Hyperspectral indices to diagnose leaf biotic stress of apple plants,considering leaf phenology, International Journal of Remote Sensing, 30, 8, pp. 1887-1912 (2009)

    Tesfamichael, S.G.; Ahmed, F.; van Aardt, J.A.; Blakeway, F., A semi-variogram approach for estimating stems per hectare in Eucalyptus grandis plantations using discrete-return lidar height data, Forest Ecology and Management, 258, 2009, pp. 1188-1199 (2009)

    Gebreslasie, M.T.; Ahmed, F.; van Aardt, J.A., Image-based reflectance conversion of ASTER and IKONOS imagery as precursor to structural assessment of plantation forests in KwaZulu-Natal, South Africa, Southern Forests, 71, 4, pp. 259-265 (2009)

    van Aardt, J.A.; Norris-Rogers, M., Spectral–age interactions in managed, even-aged Eucalyptus plantations: application of discriminant analysis and classification and regression trees approaches to hyperspectral data, International Journal of Remote Sensing, 29, 6, pp. 1841-1845 (2008)

    van Aardt, J.A.; Wynne, R.H.; Scrivani, J.A., Lidar-based Mapping of Forest Volume and Biomass by Taxonomic Group Using Structurally Homogenous Segments, Photogrammetric Engineering and Remote Sensing, 74, 8, pp. 1033-1044 (2008)

    Roberts, W.J.; van Aardt, J.A.; Ahmed, F., Assessment of image fusion procedures using entropy, image quality, and multispectral classification, Journal of Applied Remote Sensing, 2, 023522, pp. 1-28 (2008)

    Majeke, B.; van Aardt, J.A.; Cho, M., Imaging spectroscopy of foliar biochemistry in forestry environments, Southern Forests, 70, 3, pp. 275-285 (2008)

    Lhermitte, S.; Verbesselt, J.; Jonckheere, I.; Nackaerts, K.; van Aardt, J.A.; Verstraeten, W.; Coppin, P., Hierarchical image segmentation based on similarity of NDVI time series, Remote Sensing of Environment, 112, pp. 506-521 (2008)

    Kempeneers, P; Zarco-Tejada, P; North, P; De Backer, S; Delalieux, S.; Sepulcre-Canto, G; Morales, F; van Aardt, J.A.; Sagardoy, R; Coppin, P.; Scheunders, P, Model inversion for chlorophyll estimation in open canopies from hyperspectral imagery, International Journal of Remote Sensing, 29, 17-18, pp. 5093-5111 (2008)

    Gebreslasie, M.; Ahmed, F.; van Aardt, J.A., Estimating plot-level forest structural attributes using high spectral resolution ASTER satellite data in even-aged Eucalyptus plantations in southern KwaZulu-Natal, South Africa, Southern Forests, 70, 3, pp. 227-236 (2008)

    Verbesselt, J.; Somers, B.; Lhermitte, S.; Jonckheere, I.; van Aardt, J.A.; Coppin, P., Monitoring herbaceous fuel moisture content with SPOT VEGETATION time-series for fire risk prediction in savanna ecosystems, Remote Sensing of Environment, 108, pp. 357-368 (2007)

    Delalieux, S.; van Aardt, J.A.; Keulemans, W.; Schrevens, E.; Coppin, P., Detection of biotic stress (Venturia inaequalis) in apple trees using hyperspectral data: Non-parametric statistical approaches and physiological implications, European Journal of Agronomy, 27, pp. 130-143 (2007)

    Biliouris, D.; Verstraeten, W.; Dutre, P.; van Aardt, J.A.; Muys, B.; Coppin, P., A Compact Laboratory Spectro-Goniometer (CLabSpeG) to Assess the BRDF of Materials. Presentation, Calibration and Implementation on Fagus sylvatica L. Leaves, Sensors, 7, pp. 1846-1870 (2007)

    van Aardt, J.A.; Wynne, R.H., Examining pine spectral separability using hyperspectral data from an airborne sensor: An extension of field-based results, International Journal of Remote Sensing, 28, 2, pp. 431-436 (2007)

    Roberts, W.J.; Tesfamichael, S.; Gebreslasie, M.; van Aardt, J.A.; Ahmed, F., Forest structural assessment using remote sensing technologies: an overview of the current state of the art, Southern Hemisphere Forestry Journal, 69, 3, pp. 183-203 (2007)

    van Aardt, J.A.; Wynne, R.H.; Oderwald, R.G., Forest Volume and Biomass Estimation Using Small-Footprint Lidar-Distributional Parameters on a Per-Segment Basis, Forest Science, 52, 6, pp. 636-649 (2006)

    Van der Zande, D.; Hoet, W.; Jonckheere, I.; van Aardt, J.A.; Coppin, P., Influence of measurement set-up of ground-based LiDAR for derivation of tree structure, Agricultural and Forest Meteorology, 141, pp. 147-160 (2006)

    Verbesselt, J.; Jonsson, P.; Lhermitte, S.; van Aardt, J.A.; Coppin, P., Evaluating Satellite and Climate Data-Derived Indices as Fire Risk Indicators in Savanna Ecosystems, IEEE Transactions on Geoscience and Remote Sensing , 44, 6, pp. 1622-1632 (2006)

    Verbesselt, J.; Somers, B.; van Aardt, J.A.; Jonckheere, I.; Coppin, P., Monitoring herbaceous biomass and water content with SPOT VEGETATION time-series to improve fire risk assessment in savanna ecosystems, Remote Sensing of Environment, 101, pp. 399-414 (2006)

    Jonckheere, I.; Nackaerts, K.; Muys, B.; van Aardt, J.A.; Coppin, P., A fractal dimension-based modelling approach for studying the effect of leaf distribution on LAI retrieval in forest canopies, Ecological Modelling, 197, pp. 179-195 (2006)

    Verbesselt, J.; Somers, B.; Lhermitte, S.; van Aardt, J.A.; Jonckheere, I.; Coppin, P., Fire risk assessment in savanna ecosystems with multi-temporal satellite data, Communications in agricultural and applied biological sciences, 70, 2, pp. 23-26 (2005)

    Lhermitte, S.; Verbesselt, J.; Jonckheere, I.; van Aardt, J.A.; Coppin, P., Eco-climatic image segmentation based on time series, Communications in agricultural and applied biological sciences, 70, 2, pp. 165-168 (2005)

    van Aardt, J.A.; Wynne, R.H., Spectral Separability among Six Southern Tree Species, Photogrammetric Engineering and Remote Sensing, 67, 12, pp. 1367-1375 (2001)

    Bortolot, Z.J.; Copenheaver, C.A.; Longe, R.L.; van Aardt, J.A., Development of a White Oak Chronology Using Live Trees and a Post-civil War Cabin in South-central Virginia, Tree-Ring Research, 57, 2, pp. 197-203 (2001)


REFEREED CONFERENCE PROCEEDINGS

    Romanczyk, P.A.; van Aardt, J.A.; Kelbe, D.; Cawse-Nicholson, K.A.; Ramond, T.M., The Effect of Positioning Error on the Repeatability of Small-Footprint Waveform Lidar Signals, Silvilaser 2014, Beijing, China, October (2013)

    Kelbe, D.; Romanczyk, P.A.; van Aardt, J.A.; Cawse-Nicholson, K.A.; Krause, K., Automatic extraction of tree stem models from single terrestrial lidar scans in structurally heterogeneous forest environments, Silvilaser Annual Conference Proceedings, Silvilaser, Silvilaser 2012 Annual Conference: First Return, 2012, Vancouver, Canada, pp. 54-61, September (2012)

    Romanczyk, P.A.; Kelbe, D.; van Aardt, J.A.; Cawse-Nicholson, K.A.; McGlinchy, J.; Krause, K., Assessing the impact of broadleaf tree structure on airborne full-waveform small-footprint LiDAR signals, Silvilaser Annual Conference Proceedings, Silvilaser, Silvilaser 2012 Annual Conference: First Return, 2012, Vancouver, Canada, pp. 271-492, September (2012)

    van Aardt, J.A.; Arthur, M.; Sovkoplas, G.; Swetnam, T., LiDAR-based estimation of forest floor fuel loads using a novel distributional approach, SilviLaser 2011 – 11th International Conference on LiDAR Applications for Assessing Forest Ecosystems; October 16-19, 2011, Hobart, Tasmania, Australia, pp. 1-8, October (2011)

    Wu, J.; van Aardt, J.A.; Asner, G.P.; Kennedy-Bowdoin, T.; Knapp, D.; Erasmus, B.F.; Mathieu, R.; Wessels, K.; Smit, I.P., LiDAR Waveform-based Woody and Foliar Biomass Estimation in Savanna Environments, Silvilaser, Silvilaser 2009 - 9th International Conference on Lidar Applications for Assessing Forest Ecosystems, College Station, Texas, USA, October (2009)

    Delalieux, S.; van Aardt, J.A.; Zarco-Tejada, P; Kempeneers, P; Verstraeten, W.; Coppin, P., Development of robust hyperspectral indices for the detection of deviations from normal plant state, 5th EARSeL Workshop on Imaging Spectroscopy, Brugge, Flanders, Belgium (2007)


CONFERENCE PROCEEDINGS

    Kelbe, D.; Romanczyk, P.A.; van Aardt, J.A.; Cawse-Nicholson, K.A., Reconstruction of 3D tree stem models from low-cost terrestrial laser scanner data, SPIE Defense, Security, and Sensing Conference, SPIE, SPIE Defense, Security, and Sensing Conference, Baltimore, MD, USA, pp. 1-12, May (2013)

    Bandyopadhyay, M; van Aardt, J.A.; Cawse-Nicholson, K.A., Classification and Extraction of Trees and Buildings from Urban Scenes Using Discrete Return LiDAR and Aerial Color Imagery, SPIE Defense, Security, and Sensing Conference, SPIE, SPIE Defense, Security, and Sensing Conference, Baltimore, MD, USA, May (2013)

    Giannandrea, A.; Raqueno, N.G.; Messinger, D.W.; Faulring, J.W.; Kerekes, J.P.; van Aardt, J.A.; Canham, K.; Hagstrom, S.; Ontiveros, E.M.; Gerace, A.D.; Kaufman, J.; Vongsy, K.; Griffith, H.; Bartlett, B.D.; Ientilucci, E.J.; Meola, J.; Scarff, L.; Daniel, B.J., The SHARE 2012 Data Campaign, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIX, Defense, Sensing, and Security, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XIX, SPIE Vol. 8743, 87430F, Baltimore, Maryland, United States, April (2013)

    Cawse-Nicholson, K.A.; van Aardt, J.A.; Romanczyk, P.A.; Kelbe, D.; Krause, K.; Kampe, T., A study of energy attenuation due to forest canopy in small-footprint waveform lidar signals, ASPRS, Annual Conference, Baltimore, MD, USA, March (2013)

    Cawse-Nicholson, K.A.; van Aardt, J.A.; Kelbe, D.; Romanczyk, P.A.; Kampe, T.; Krause, K., On the scalability of spectral leaf area index metrics, ASPRS, Annual conference, Baltimore, MD, USA, March (2013)

    Krause, K.; Hinckley, E; Meier, C; Barnett, D; Leisso, N; Kampe, T.; Tazik, D; van Aardt, J.A.; Cawse-Nicholson, K.A.; Schaaf, C; Strahler, A, NEON Airborne Observation Platform test flights: Validation of airborne lidar and hyperspectral data, American Society for Photogrammetry and Remote Sensing Annual Conference, ASPRS, Annual Meeting, Baltimore, MD, USA, pp. 1-10, March (2013)

    van Aardt, J.A.; Wu, J.; McGlinchy, J.; Wessels, K.; Mathieu, R.; Kennedy-Bowdoin, T.; Knapp, D.; Asner, G.P., ON USING DISCRETE RETURN LIDAR DISTRIBUTIONS AS A PROXY FOR WAVEFORM LIDAR SIGNALS WHEN MODELING VEGETATION STRUCTURE, IEEE International Geoscience and Remote Sensing Symposium - Proceedings, IEEE, IEEE International Geoscience and Remote Sensing Symposium, 2012, Munich, Bavaria, Germany, pp. 1-4, July (2012)

    Wessels, K.; Erasmus, B.F.; Colgan, M.; Asner, G.P.; Mathieu, R.; Twine, W.; van Aardt, J.A.; Smit, I.P., Impacts of communal fuelwood extraction on lidar-estimated biomass patterns of savanna woodlands, IEEE IGARSS 2012, IEEE, IGARSS 2012, Munich, Bavaria, Germany, July (2012)

    Herweg, J.; Kerekes, J.P.; Weatherbee, O.; Messinger, D.W.; van Aardt, J.A.; Ientilucci, E.J.; Ninkov, Z.; Faulring, J.W.; Raqueno, N.G.; Meola, J., SpecTIR Hyperspectral Airborne Rochester Experiment Data Collection Campaign, Proceedings of Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVIII, Defense, Sensing, and Security, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVIII, 8390, 839028, Baltimore, Maryland, United States, April (2012)

    Sah, S.; van Aardt, J.A.; McKeown, D.; Messinger, D.W., A multi-temporal analysis approach for land cover mapping in support of nuclear incident response, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVIII, SPIE, SPIE Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVIII, 8390, Baltimore, MD, USA, pp. 1-7, April (2012)

    Labiak, R.; van Aardt, J.A.; Bespalov, D.; Eychner, D.; Wirch, E.; Bischoff, H., Automated method for detection and quantification of building damage and debris using post-disaster LiDAR data, SPIE, SPIE Conference on Laser Radar Technology and Applications XVI, Orlando, FL, USA, April (2011)

    Faulring, J.W.; McKeown, D.; van Aardt, J.A.; Casterline, M.V.; Bartlett, B.D.; Raqueno, N.G., Supporting Relief Efforts of the 2010 Haitian Earthquake using an Airborne Multi-Modal Remote Sensing Platform, SPIE, SPIE Conference on Conference on Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVII, Orlando, FL, USA, April (2011)

    McKeown, D.; Faulring, J.W.; Krzaczek, R.S.; Cavillia, S.; van Aardt, J.A., Demonstration of delivery of ortho imagery in realtime for local emergency response, SPIE, SPIE Conference on Conference on Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVII, Orlando, FL, USA, April (2011)

    Messinger, D.W.; van Aardt, J.A.; McKeown, D.; Casterline, M.V.; Faulring, J.W.; Raqueno, N.G.; Basener, B.; Velez-Reyes, M., High Resolution and LIDAR Imaging Support to the Haiti Earthquake Relief Effort, Imaging Spectrometry XV, Optics & Photonics, Imaging Spectrometry XV, 7812, San Diego, California, United States, August (2010)

    McGlinchy, J.; van Aardt, J.A.; Rhody, H.E.; Kerekes, J.P.; Ientilucci, E.J.; Asner, G.P.; Knapp, D.; Mathieu, R.; Kennedy-Bowdoin, T.; Erasmus, B.F.; Wessels, K.; Smit, I.P.; Wu, J.; Sarrazin, D., Extracting Structural Land Cover Components using Small--footprint Waveform Lidar Data, Proceedings of 2010 IEEE International Geoscience & Remote Sensing Symposium, IEEE, IGARSS, Honolulu, Hawaii, USA, July (2010)

    Sarrazin, D.; van Aardt, J.A.; Messinger, D.W.; Asner, G.P., Fusing waveform LIDAR and hyperspectral data for species-level structural assessment in savanna ecosystems, SPIE, Laser Radar Technology and Applications XV, 7684, Orlando, Florida, USA (2010)

    Wu, J.; van Aardt, J.A.; Asner, G.P.; Mathieu, R.; Kennedy-Bowdoin, T.; Knapp, D.; Wessels, K.; Erasmus, B.F.; Smit, I.P., Connecting the dots between laser waveforms and herbaceous biomass for assessment of land degradation using small-footprint waveform lidar data, Proceedings of 2009 IEEE International Geoscience & Remote Sensing Symposium, IEEE, IGARSS, July 13-17, 2009, Cape Town, Western-Cape, South Africa, pp. 1-4, July (2009)

    Fisher, J.; Erasmus, B.F.; Witkowski, E.; van Aardt, J.A.; Asner, G.P.; Kennedy-Bowdoin, T.; Knapp, D.; Mathieu, R.; Wessels, K., Three-dimensional woody vegetation structure across different land-use types and land-use intensities in a semi-arid savanna, Proceedings of 2009 IEEE International Geoscience & Remote Sensing Symposium, IEEE, IGARSS, Cape Town, Western-Cape, South Africa, July (2009)

    Cho, M.A.; Debba, P.; Mathieu, R.; van Aardt, J.A.; Asner, G.P.; Naidoo, L.; Main, R.; Ramoelo, A.; Majeke, B., Spectral variability within species and its effects on savanna tree species discrimination, Proceedings of 2009 IEEE International Geoscience & Remote Sensing Symposium, IEEE, IGARSS, Cape Town, Western-Cape, South Africa, July (2009)

    Mathieu, R.; Wessels, K.; Asner, G.P.; Knapp, D.; van Aardt, J.A.; Main, R.; Cho, M.A.; Erasmus, B.F.; Smit, I.P., Tree cover, tree height, and bare soil cover differences along a land use degradation gradient in semi-arid savannas, South Africa, Proceedings of 2009 IEEE International Geoscience & Remote Sensing Symposium, IEEE, IGARSS, Cape Town, Western-Cape, South Africa, July (2009)

    Smit, I.P.; Govendor, N; Levick, S.; Kennedy-Bowdoin, T.; Knapp, D.; Emerson, R.R.; Jacobson, J.J.; Mathieu, R.; Wessels, K.; Erasmus, B.F.; van Aardt, J.A., Fire as a browser: Using lidar to visualise and quantify woody structure on a long-term fire experiment in an African savanna, Proceedings of 2009 IEEE International Geoscience & Remote Sensing Symposium, IEEE, IGARSS, Cape Town, Western-Cape, South Africa, July (2009)

    Cho, M.A.; van Aardt, J.A.; Majeke, B.; Main, R.; Ramoelo, A.; Mathieu, R.; Norris-Rogers, M.; du Plessis, M., Integrating remote sensing and ancillary data for regional ecosystem assessment: Eucalyptus grandis agro-system in KwaZulu-Natal, South Africa, Proceedings of 2009 IEEE International Geoscience & Remote Sensing Symposium, IEEE, IGARSS, Cape Town, Western-Cape, South Africa, July (2009)

    Roberts, W.J.; Ahmed, F.; van Aardt, J.A., A data-fusion based semi-automatic tree counting algorithm for use in Eucalyptus grandis plantations, Proceedings of 2009 IEEE International Geoscience & Remote Sensing Symposium,, IEEE, IGARSS, Cape Town, Western-Cape, South Africa, July (2009)

    Gebreslasie, M.; Ahmed, F.; van Aardt, J.A., Extracting Forest Structural Attributes in South Africa using Image texture Analysis and Artificial Neural Networks from IKONOS Imagery, RSE, Proceedings of the 33rd International Symposium on Remote Sensing of Environment, May 4-8, 2009, Stresa, Piemonte, Italy (2009)

    Cho, M.A.; van Aardt, J.A.; Majeke, B.; Main, R., Evaluating the seasonality of remote sensing indicators of system state for Eucalyptus grandis growing on different site qualities, Proceedings of 2008 IEEE International Geoscience & Remote Sensing Symposium, IEEE, IGARSS, Boston, MA, USA, July (2008)

    van Aardt, J.A.; Roberts, W.J.; Gebreslasie, M.; Tesfamichael, S., Investigating structural-spectral interactions in managed, even-aged Eucalyptus plantations using lidar and multispectral high resolution data, SPIE, Remote Sensing in Ecosystems and Agriculture Conference, September 19-20, 2007, Florence, Toscana, Italy (2007)

    van Aardt, J.A.; Norris-Rogers, M., Investigating species specific spectral-site-age interactions in managed, even-aged Eucalyptus plantations using hyperspectral data, SPIE, Imaging Spectroscopy Workshop, April 23-25, 2007, Brugge, West-Vlaanderen, Belgium (2007)

    van Aardt, J.A.; Wynne, R.H., Segment-based forest volume-by-type modelling using small-footprint lidar height distributions, IUFRO, International Precision Forestry Symposium, 5 - 10 March 2006, Stellenbosch, Western Cape, South Africa (2006)

    van Aardt, J.A.; Coppin, P., Current state and potential of the IS-HS project – integration of in situ data and hyperspectral remote sensing for plant production modelling, IUFRO, International Precision Forestry Symposium, 5 - 10 March 2006, Stellenbosch, Western Cape, South Africa (2006)

    Kempeneers, P; De Backer, S; Zarco-Tejada, P; Delalieux, S.; Sepulcre-Canto, G; Morales, F; Sagardoy, R; van Aardt, J.A.; Coppin, P.; Scheunders, P, Chlorophyll retrieval from canopy reflectance over orchards using hyperspectral techniques, University of Valencia, 2nd International Symposium on Recent Advances in Quantitative Remote Sensing, September 25-29, 2006, Valencia, Valenciana, Spain (2006)

    Delalieux, S.; Kempeneers, P; De Backer, S; Zarco-Tejada, P; Sepulcre-Canto, G; Sagardoy, R; Morales, F; van Aardt, J.A.; Coppin, P.; Scheunders, P, Modeling biochemical processes in orchards at leaf- and canopy-level using hyperspectral data, Belgium Science Policy Office , Hyperspectral (Bruhyp) Annual Conference, October 2006, Brugge, West-Vlaanderen, Belgium (2006)

    Kempeneers, P; De Backer, S; Zarco-Tejada, P; Delalieux, S.; Sepulcre-Canto, G; Morales, F; van Aardt, J.A.; Coppin, P.; Scheunders, P, Stress detection in orchards with hyperspectral remote sensing data, SPIE, SPIE Europe, September 11-14, 2006, Stockholm, Stockholms Lan, Sweden (2006)

    Verbesselt, J.; Somers, B.; Lhermitte, S.; van Aardt, J.A.; Jonckheere, I.; Coppin, P., Estimating vegetation dryness to optimize fire risk assessment with SPOT VEGETATION satellite data in savanna ecosystems, SPIE, Europe International Symposium on Remote Sensing, September 19-22, 2005, Brugge, West-Vlaanderen, Belgium (2005)

    Delalieux, S.; Keulemans, W.; van Aardt, J.A.; Schrevens, E.; Coppin, P., Detection of natural and stress-induced variability in reflectance spectra of apple trees using hyperspectral analysis, SPIE, Europe International Symposium on Remote Sensing, September 19-22, 2005, Brugge, West-Vlaanderen, Belgium (2005)

    Biliouris, D.; vom Berge, K; van Aardt, J.A.; Dutre, P.; Muys, B.; Williams, Y; Coppin, P., Hyperspectral virtual imaging system of a Fagus sylvatica stand, SPIE, Europe International Symposium on Remote Sensing, September 19-22, 2005, Brugge, West-Vlaanderen, Belgium (2005)

    Van der Zande, D.; Hoet, W.; van Aardt, J.A.; Coppin, P., Multidirectional laser measurement of three-dimensional tree structure, SPIE, Europe International Symposium on Remote Sensing, September 19-22, 2005, Brugge, West-Vlaanderen, Belgium (2005)

    Lhermitte, S.; Tips, M; Verbesselt, J.; Jonckheere, I.; van Aardt, J.A.; Coppin, P., Development of indicators of vegetation recovery based on time series analysis of SPOT VEGETATION data, SPIE, Europe International Symposium on Remote Sensing, September 19-22, 2005, Brugge, West-Vlaanderen, Belgium (2005)

    Delalieux, S.; van Aardt, J.A.; Keulemans, W.; Coppin, P., Detection of biotic stress (Venturia inaequalis) in apple trees using hyperspectral analysis, EARSEL, 4th Workshop on Imaging Spectroscopy, (EARSEL), April 27-29, 2005, Warsaw, Poland, Poland (2005)

    Biliouris, D.; vom Berge, K; van Aardt, J.A.; Muys, B.; Coppin, P., Hyperspectral bidirectional reflectance measurements of Fagus sylvatica leaves, EARSEL, 4th Workshop on Imaging Spectroscopy, (EARSEL), April 27-29, 2005, Warsaw, Poland, Poland (2005)

    van Aardt, J.A.; Wynne, R.H., A Multiresolution Approach to Forest Segmentation as a Precursor to Estimation of Volume and Biomass by Species, ASPRS, American Society of Photogrammetric Engineering and Remote Sensing 2004 Annual Conference, May 24-28, 2004, Denver, Colorado, United States (2004)

    van Aardt, J.A.; Wynne, R.H., Extending Inherent Pine Spectral Separability to Operational Data: A Case Study in the Virginia Piedmont, ISSSR, 2003 International Symposium on Spectral Sensing Research, June 2-6, 2003, Santa Barbara, California, United States (2003)

    van Aardt, J.A.; Wynne, R.H., Spectral Differentiability among Six Southern Forestry Species., ASPRS, American Society of Photogrammetric Engineering and Remote Sensing 2000 Annual Conference, May 22-26, 2000, Washington, District of Columbia, United States (2000)


BOOK CHAPTERS

    Kunneke, A.; van Aardt, J.A.; Roberts, W.J.; Seifert, T., Chapter 2 - Localisation of Biomass Potentials, Bioenergy from Wood: Sustainable Production in the Tropics, Managing Forest Ecosystems 26, T. Seifert, Springer, DOI 10.1007/978-94-007-7448-3__2, Dordrecht, The Netherlands, Netherlands (2014)

    van Aardt, J.A.; Mathieu, R.; Cho, M.; Wessels, K.; Erasmus, B.F.; Asner, G.P.; Smit, I.P., Assessing degradation across a land use gradient in the Kruger National Park area using advanced remote sensing modalities; see: pp. 97-103., Observations on Environmental Change in South Africa, 1st Edition, Zietsman, L., SUN PRESS, 3, Stellenbosch, Western Cape, South Africa (2011)

    van Aardt, J.A.; Cho, M.; Main, R.; Mathieu, R.; Somers, B.; Norris-Rogers, M.; Verreynne, S.; Verstraeten, W.; Coppin, P., Ecosystems: Case studies in capital intensive crops towards system modeling of ecosystems using integrated hyperspectral remote sensing and in situ inputs; see: pp. 116-123 , Observations on Environmental Change in South Africa, 1st Edition, Zietsman, L., SUN PRESS, 3, Stellenbosch, Western Cape, South Africa (2011)

    van Aardt, J.A.; Kotze, I.; Cho, M.; Mathieu, R.; Norris-Rogers, M., Species-level classification using imaging spectroscopy for the detection of invasive alien species; see: pp. 147-153, Observations on Environmental Change in South Africa, 1st Edition, Zietsman, L., SUN PRESS, 3, Stellenbosch, Western Cape, South Africa (2011)

    van Aardt, J.A.; Vogel, M.; Luck, W.; Althausen, J.D., Remote sensing systems for operational and research use. In: Manual of Geospatial Science and Technology, Bossler J.D. (Ed.), CRC Press, Taylor & Francis, New York, 808p., Manual of Geospatial Science and Technology, 2nd Edition, Bossler J.D., CRC Press, Boca Raton, Florida, USA (2010)

    Verbesselt, J.; Jonsson, P.; Lhermitte, S.; Jonckheere, I.; van Aardt, J.A.; Coppin, P., Relating Time-series of Meteorological and Remote Sensing indices to monitor Vegetation Moisture Dynamics, Signal and image processing for remote sensing , 1st Edition, Chen C.H., CRC Press, Dartmouth, Massachusetts, United States (2006)

    Kempeneers, P; De Backer, S; Zarco-Tejada, P; Delalieux, S.; Sepulcre-Canto, G; Iribas, F; van Aardt, J.A.; Coppin, P.; Scheunders, P, Stress detection in orchards with hyperspectral remote sensing data, Proceedings of the Society of Photo-Optical Instrumentation Engineers, SPIE, Bellingham, Washington, United States (2006)


CONFERENCE PRESENTATION (NO PROCEEDINGS)

    Romanczyk, P.A.; van Aardt, J.A.; Cawse-Nicholson, K.A.; Kelbe, D.; Strahler, A; Schaaf, C; Krause, K.; Ramond, T.M., Quantifying the Attenuation Due to Geometry Interactions in Waveform Lidar Signals - abstract only, AGU, AGU Fall Meeting, San Francisco, CA, USA, December (2013)

    van Aardt, J.A.; Wu, J.; McGlinchy, J.; Sarrazin, D.; Kelbe, D.; Erasmus, B.F.; Mathieu, R.; Wessels, K.; Asner, G.P.; Knapp, D.; Kennedy-Bowdoin, T., Towards a Species-specific Description of Detailed Savanna Woody structure at Various Scales Using Imaging Spectroscopy and Waveform Lidar Sensing. , ISRSE, 34th International Symposium for Remote Sensing of the Environment, April 10-15, 2011, Sydney, NSW, Australia, April (2011)

    van Aardt, J.A.; Wu, J.; Asner, G.P., Combining high fidelity simulations and real data for improved small-footprint waveform lidar assessment of vegetation structure (invited), AGU, American Geophysics Union Annual Fall Conference, December 13-17, 2010, San Francisco, CA, USA, December (2010)

    van Aardt, J.A.; Wu, J.; Fisher, J.; Erasmus, B.F.; Wessels, K.; Mathieu, R.; Asner, G.P.; Kennedy-Bowdoin, T.; Knapp, D., Comparing discrete return- to waveform lidar data for vegetation structural assessment: A contemporaneous, small-footprint study in a savanna ecosystem, • American Society for Photogrammetric Engineering and Remote Sensing (ASPRS), ASPRS 2010 Annual Conference, San Diego, CA, USA, April (2010)

    van Aardt, J.A.; McKeown, D.; Vodacek, A.; Duvvuri, S.; Pillai, A.; Renschler, C.; Faulring, J.W.; Bischoff, H.; Collins, H.; Boyd, D., Information Products Laboratory for Emergency Response: Rapid Turnaround Geospatial Disaster Management Products with Fire and Earthquake Response as Case Studies, • American Society for Photogrammetric Engineering and Remote Sensing (ASPRS), ASPRS 2010 Annual Conference, San Diego, CA, USA, April (2010)

    van Aardt, J.A.; Arthur, M.; Carmean, G.; Kremens, R.L.; Faulring, J.W.; McKeown, D., A Sampling Approach to Forest Fuel Load Assessment Across Different Fire Regimes in Eastern Deciduous Forests using Small-footprint Discrete Return Lidar, • American Society for Photogrammetric Engineering and Remote Sensing (ASPRS), ASPRS 2010 Annual Conference, San Diego, CA, USA, April (2010)


POSTERS

    Musinsky, J.; Wasser, L.; Kampe, T.; Leisso, N; Krause, K.; Petroy, S.; Cawse-Nicholson, K.A.; van Aardt, J.A.; Serbin, S., Developing a Scalable Remote Sampling Design for the NEON Airborne Observation Platform (AOP) - abstract only, American Geophysics Union (AGU), AGU Fall Meeting, San Francisco, CA, USA, December (2013)

    Schaaf, C; Paynter, I.; Saenz, E.; Peri, F; Wang, Z; Erb, A; Yang, X; Strahler, A; van Aardt, J.A.; Kelbe, D.; Romanczyk, P.A.; Cawse-Nicholson, K.A.; Krause, K.; Leisso, N; Kampe, T.; Meier, C; Ritz, C; Chakrabarti, S; Cook, T; Howe, G; Martel, J; Hewawasam, K; Douglas, E; Newnham, G; Schaefer, M; Armston, J; Muir, J; Tindall, D; Phinn, S, Canopy Biomass Lidar (CBL) Acquisitions at NEON and TERN Forest Sites - abstract only, American Geophysics Union (AGU), AGU Fall Meeting, San Francisco, CA, USA, December (2013)

    Kampe, T.; Leisso, N; Krause, K.; Musinsky, J.; Petroy, S.; Wasser, L.; Cawse-Nicholson, K.A.; van Aardt, J.A.; Schaaf, C; Strahler, A; Serbin, S.S., NEON Collaborative Data Collection Campaign at Pacific South West Site in California - abstract only, American Geophysics Union (AGU), AGU Fall Meeting, San Francisco, CA, USA, December (2013)

    van Aardt, J.A.; Arthur, M.; Swetnam, T.; Mitchell, B, Validating a novel lidar distributional approach for forest floor fuel load mapping: Eastern hardwoods vs. western spruce-fir environments, American Geophysics Uion (AGU), AGU Fall Meeting, San Francisco, CA, USA, December (2013)

    Cawse-Nicholson, K.A.; van Aardt, J.A.; Romanczyk, P.A.; Kelbe, D.; Bandyopadhyay, M; Yao, W.; Krause, K.; Kampe, T., The Effect of Lidar Point Density on LAI Estimation, American Geophysics Union (AGU) , AGU Fall Meeting, San Francisco, CA, USA, December (2013)

    Kelbe, D.; Romanczyk, P.A.; van Aardt, J.A.; Cawse-Nicholson, K.A., Marker-free registration of terrestrial laser scanner data for forestry applications, Silvilaser, 13th Annual Silvilaser Conference, Beijing, China, China (2013)

    Paynter, I.; Saenz, E.; Peri, F; Schaaf, C; Wang, Z; Erb, A; Yang, Y; Rouhani, S; Liu, Y; Yang, X; Chen, R; Oktay, S; Gontz, A; Douglas, E; Kim, J; Sun, Q; Strahler, A; Li, Z; van Aardt, J.A.; Kelbe, D.; Romanczyk, P.A.; Cawse-Nicholson, K.A., Coastal Applications of the Canopy Biomass Lidar (CBL) - abstract only, American Geophysics Union (AGU), AGU Fall Meeting, San Francisco, CA, USA (2013)