Universität zu Köln

Aasen, Helge (2016). The acquisition of Hyperspectral Digital Surface Models of crops from UAV snapshot cameras. PhD thesis, Universität zu Köln.

Aasen, Helge ORCID: 0000-0003-4343-0476 and Bolten, Andreas ORCID: 0000-0003-1287-9705 (2018). Multi-temporal high-resolution imaging spectroscopy with hyperspectral 2D imagers - From theory to application. Remote Sens. Environ., 205. S. 374 - 390. NEW YORK: ELSEVIER SCIENCE INC. ISSN 1879-0704

Aasen, Helge, Burkart, Andreas, Bolten, Andreas and Bareth, Georg (2015). Generating 3D hyperspectral information with lightweight UAV snapshot cameras for vegetation monitoring: From camera calibration to quality assurance. ISPRS Journal of Photogrammetry and Remote Sensing, 108. pp. 245-259. Elsevier. ISSN 09242716

Aasen, Helge ORCID: 0000-0003-4343-0476, Burkart, Andreas, Bolten, Andreas ORCID: 0000-0003-1287-9705 and Bareth, Georg (2015). Generating 3D hyperspectral information with lightweight UAV snapshot cameras for vegetation monitoring: From camera calibration to quality assurance. ISPRS-J. Photogramm. Remote Sens., 108. S. 245 - 260. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 1872-8235

Aasen, Helge, Gnyp, Martin Leon, Miao, Yuxin and Bareth, Georg (2014). Automated Hyperspectral Vegetation Index Retrieval from Multiple Correlation Matrices with HyperCor. Photogrammetric Engineering & Remote Sensing, 80 (8). pp. 785-795. American Society for Photogrammetry and Remote Sensing. ISSN 00991112

Aasen, Helge, Gnyp, Martin Leon, Miao, Yuxin and Bareth, Georg (2014). Towards robust vegetation indices: The multi-correlation matrix strategy. In: 2014 6th Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS), 24-27 June 2014, Lausanne, Switzerland. Paper.

Bareth, Georg, Aasen, Helge ORCID: 0000-0003-4343-0476, Bendig, Juliane ORCID: 0000-0002-6454-5654, Gnyp, Martin Leon, Bolten, Andreas ORCID: 0000-0003-1287-9705, Jung, Andras ORCID: 0000-0003-3250-4097, Michels, Rene and Soukkamaki, Jussi (2015). Low-weight and UAV-based Hyperspectral Full-frame Cameras for Monitoring Crops: Spectral Comparison with Portable Spectroradiometer Measurements. Photogramm. Fernerkund. Geoinf. (1). S. 69 - 80. STUTTGART: E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG. ISSN 2363-7145

Bareth, Georg, Aasen, Helge, Bendig, Juliane, Gnyp, Martin Leon, Bolten, Andreas, Jung, András, Michels, René and Soukkamäki, Jussi (2015). Low-weight and UAV-based Hyperspectral Full-frame Cameras for Monitoring Crops: Spectral Comparison with Portable Spectroradiometer Measurements. Photogrammetrie - Fernerkundung - Geoinformation, 2015 (1). pp. 69-79. Schweizerbart. ISSN 14328364

Bareth, Georg, Bendig, Juliane, Tilly, Nora, Hoffmeister, Dirk, Aasen, Helge and Bolten, Andreas (2016). A Comparison of UAV- and TLS-derived Plant Height for Crop Monitoring: Using Polygon Grids for the Analysis of Crop Surface Models (CSMs). Photogrammetrie - Fernerkundung - Geoinformation, 2016 (2). pp. 85-94. Schweizerbart. ISSN 1432-8364

Bareth, Georg, Bendig, Juliane ORCID: 0000-0002-6454-5654, Tilly, Nora ORCID: 0000-0002-2978-6188, Hoffmeister, Dirk ORCID: 0000-0002-8178-557X, Aasen, Helge ORCID: 0000-0003-4343-0476 and Bolten, Andreas ORCID: 0000-0003-1287-9705 (2016). A Comparison of UAV- and TLS-derived Plant Height for Crop Monitoring: Using Polygon Grids for the Analysis of Crop Surface Models (CSMs). Photogramm. Fernerkund. Geoinf. (2). S. 85 - 95. STUTTGART: E SCHWEIZERBARTSCHE VERLAGSBUCHHANDLUNG. ISSN 2363-7145

Bendig, Juliane, Yu, Kang ORCID: 0000-0002-0686-6783, Aasen, Helge, Bolten, Andreas, Bennertz, Simon, Broscheit, Janis, Gnyp, Martin L. and Bareth, Georg (2015). Combining UAV-based plant height from crop surface models, visible, and near infrared vegetation indices for biomass monitoring in barley. International Journal of Applied Earth Observation and Geoinformation, 39. pp. 79-87. Elsevier. ISSN 03032434

Burkart, Andreas, Aasen, Helge, Alonso, Luis, Menz, Gunter, Bareth, Georg and Rascher, Uwe (2015). Angular Dependency of Hyperspectral Measurements over Wheat Characterized by a Novel UAV Based Goniometer. Remote Sensing, 7 (1). pp. 725-746. MDPI. ISSN 2072-4292

Burkart, Andreas, Aasen, Helge ORCID: 0000-0003-4343-0476, Alonso, Luis ORCID: 0000-0002-8221-5739, Menz, Gunter, Bareth, Georg and Rascher, Uwe ORCID: 0000-0002-9993-4588 (2015). Angular Dependency of Hyperspectral Measurements over Wheat Characterized by a Novel UAV Based Goniometer. Remote Sens., 7 (1). S. 725 - 747. BASEL: MDPI. ISSN 2072-4292

Gnyp, Martin Leon, Yu, Kang, Aasen, Helge, Yao, Yinkun, Huang, Shanyu, Miao, Yuxin and Bareth, Georg (2013). Analysis of Crop Reflectance for Estimating Biomass in Rice Canopies at Different Phenological Stages - Reflexionsanalyse zur Abschätzung der Biomasse von Reis in unterschiedlichen phänologischen Stadien. Photogrammetrie - Fernerkundung - Geoinformation, 2013 (4). pp. 351-365. Schweizerbart. ISSN 14328364

Hoffmeister, Dirk, Ntageretzis, Konstantin, Aasen, Helge, Curdt, Constanze, Hadler, Hanna, Willershäuser, Timo, Bareth, Georg, Brückner, Helmut and Vött, Andreas (2014). 3D model-based estimations of volume and mass of high-energy dislocated boulders in coastal areas of Greece by terrestrial laser scanning. Zeitschrift für Geomorphologie, Supplementary Issues, 58 (3). pp. 115-135. Schweizerbart. ISSN 1864-1687

Tilly, Nora, Aasen, Helge and Bareth, George (2015). Fusion of Plant Height and Vegetation Indices for the Estimation of Barley Biomass. Remote Sensing, 7 (9). pp. 11449-11480. MDPI. ISSN 2072-4292

Tilly, Nora, Aasen, Helge ORCID: 0000-0003-4343-0476 and Bareth, George (2015). Fusion of Plant Height and Vegetation Indices for the Estimation of Barley Biomass. Remote Sens., 7 (9). S. 11449 - 11481. BASEL: MDPI. ISSN 2072-4292

Tilly, Nora, Aasen, Helge and Bareth, George (2015). Fusion of Plant Height and Vegetation Indices for the Estimation of Barley Biomass (vol 7, pg 11449, 2015). Remote Sens., 7 (12). S. 17291 - 17297. BASEL: MDPI AG. ISSN 2072-4292