{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T14:59:02Z","timestamp":1775228342346,"version":"3.50.1"},"reference-count":25,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2017,11,10]],"date-time":"2017-11-10T00:00:00Z","timestamp":1510272000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Diameter at breast height (DBH) is one of the most important parameter in forestry. With increasing use of terrestrial and airborne laser scanning in forestry, new exceeding possibilities to directly derive DBH emerge. In particular, high resolution point clouds from laser scanners on board unmanned aerial systems (UAS) are becoming available over forest areas. In this case study, DBH estimation from a UAS point cloud based on modeling the relevant part of the tree stem with a cylinder, is analyzed with respect to accuracy and completeness. As reference, manually measured DBHs and DBHs from terrestrial laser scanning point clouds are used for comparison. We demonstrate that accuracy and completeness of the cylinder fit are depending on the stem diameter. Stems with DBH &gt; 20 cm feature almost 100% successful reconstruction with relative differences to the reference DBH of 9% (DBH 20\u201330 cm) down to 1.8% for DBH &gt; 40 cm.<\/jats:p>","DOI":"10.3390\/rs9111154","type":"journal-article","created":{"date-parts":[[2017,11,10]],"date-time":"2017-11-10T11:12:26Z","timestamp":1510312346000},"page":"1154","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":90,"title":["A Case Study of UAS Borne Laser Scanning for Measurement of Tree Stem Diameter"],"prefix":"10.3390","volume":"9","author":[{"given":"Martin","family":"Wieser","sequence":"first","affiliation":[{"name":"Department of Geodesy and Geoinformation, Technische Universit\u00e4t Wien, Gu\u00dfhausstra\u00dfe 27-29, 1040 Vienna, Austria"}]},{"given":"Gottfried","family":"Mandlburger","sequence":"additional","affiliation":[{"name":"Department of Geodesy and Geoinformation, Technische Universit\u00e4t Wien, Gu\u00dfhausstra\u00dfe 27-29, 1040 Vienna, Austria"},{"name":"Institute for Photogrammetry, University of Stuttgart, Geschwister-Scholl-Str.24D, 70174 Stuttgart, Germany"}]},{"given":"Markus","family":"Hollaus","sequence":"additional","affiliation":[{"name":"Department of Geodesy and Geoinformation, Technische Universit\u00e4t Wien, Gu\u00dfhausstra\u00dfe 27-29, 1040 Vienna, Austria"}]},{"given":"Johannes","family":"Otepka","sequence":"additional","affiliation":[{"name":"Department of Geodesy and Geoinformation, Technische Universit\u00e4t Wien, Gu\u00dfhausstra\u00dfe 27-29, 1040 Vienna, Austria"}]},{"given":"Philipp","family":"Glira","sequence":"additional","affiliation":[{"name":"Department of Geodesy and Geoinformation, Technische Universit\u00e4t Wien, Gu\u00dfhausstra\u00dfe 27-29, 1040 Vienna, Austria"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2348-7929","authenticated-orcid":false,"given":"Norbert","family":"Pfeifer","sequence":"additional","affiliation":[{"name":"Department of Geodesy and Geoinformation, Technische Universit\u00e4t Wien, Gu\u00dfhausstra\u00dfe 27-29, 1040 Vienna, Austria"}]}],"member":"1968","published-online":{"date-parts":[[2017,11,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"339","DOI":"10.1016\/S0034-4257(99)00052-8","article-title":"LiDAR remote sensing of the canopy structure and biophysical properties of Douglas-fir western hemlock forests","volume":"7","author":"Lefsky","year":"1999","journal-title":"Remote Sens. Environ."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"164","DOI":"10.1080\/02827580310019257","article-title":"Practical large-scale forest stand inventory using a small-footprint airborne scanning laser","volume":"19","author":"Naesset","year":"2004","journal-title":"Scand. J. For. Res."},{"key":"ref_3","unstructured":"Brassel, P., and Lischke, H. (2001). Eidgen\u00f6ssische Forschungsanstalt f\u00fcr Wald, Schnee und Landschaft. Swiss National Forest Inventory: Methods and Models of the Second Assessment, WSL Swiss Federal Research Insitute."},{"key":"ref_4","unstructured":"Gabler, K., and Schadauer, K. (2017, October 26). Methoden der \u00d6sterreichischen Waldinventur 2000\/02. Available online: https:\/\/bfw.ac.at\/030\/pdf\/2414.pdf."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1085","DOI":"10.2307\/2261100","article-title":"Growth Patterns of Tree Height and Stem Diameter in Populations of Abies Veitchii, A. Mariesii and Betula Ermanii","volume":"79","author":"Hara","year":"1991","journal-title":"J. Ecol."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"546","DOI":"10.1016\/j.ufug.2013.06.002","article-title":"Tree mapping using airborne, terrestrial and mobile laser scanning\u2014A case study in a heterogeneous urban forest","volume":"12","author":"Holopainen","year":"2013","journal-title":"Urban For. Urban Green."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1016\/j.isprsjprs.2014.02.013","article-title":"Unmanned aerial systems for photogrammetry and remote sensing: A review","volume":"92","author":"Colomina","year":"2014","journal-title":"ISPRS J. Photogramm. Remote Sens."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"561","DOI":"10.1016\/j.isprsjprs.2009.04.002","article-title":"3D segmentation of single trees exploiting full waveform LiDAR data","volume":"64","author":"Reitberger","year":"2009","journal-title":"ISPRS J. Photogramm. Remote Sens."},{"key":"ref_9","first-page":"25","article-title":"LiDAR\u2019s Next Geospatial Frontier\u2014The state of LiDAR for UAS applications","volume":"29","author":"Michael","year":"2015","journal-title":"GIM Int."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1519","DOI":"10.3390\/rs4061519","article-title":"Development of a UAV-LiDAR system with application to forest inventory","volume":"4","author":"Wallace","year":"2012","journal-title":"Remote Sens."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"7619","DOI":"10.1109\/TGRS.2014.2315649","article-title":"Evaluating tree detection and segmentation routines on very high resolution UAV LiDAR Data","volume":"52","author":"Wallace","year":"2014","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"426","DOI":"10.1109\/LGRS.2010.2079913","article-title":"Mini-UAV-borne LiDAR for fine-scale mapping","volume":"8","author":"Lin","year":"2011","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"701","DOI":"10.1109\/TGRS.2008.2010314","article-title":"UAV-Borne 3-D Mapping System by Multisensor Integration","volume":"47","author":"Nagai","year":"2009","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"945","DOI":"10.14358\/PERS.82.12.945","article-title":"Rigorous Strip Adjustment of UAV-based Laserscanning Data Including Time-Dependent Correction of Trajectory Errors","volume":"82","author":"Glira","year":"2016","journal-title":"Photogramm. Eng. Remote Sens."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"6160","DOI":"10.3390\/rs70506160","article-title":"Topo-Bathymetric LiDAR for Monitoring River Morphodynamics and Instream Habitats\u2014A Case Study at the Pielach River","volume":"7","author":"Mandlburger","year":"2015","journal-title":"Remote Sens."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1127\/1868-5749\/2010\/019-0033","article-title":"The importance of structural features for spawning habitat of nase Chondrostoma nasus (L.) and barbel Barbus barbus (L.) in a pre-Alpine river","volume":"19","author":"Melcher","year":"2010","journal-title":"River Syst."},{"key":"ref_17","unstructured":"Mandlburger, G., Hollaus, M., Glira, P., Wieser, M., Milenkovic, M., Riegl, U., and Pfennigbauer, M. (2015, January 28\u201330). First examples from the RIEGL VUX-SYS for forestry applications. Proceedings of the SilviLaser, La Grande Motte, France."},{"key":"ref_18","unstructured":"RIEGL Laser Measurement Systems GmbH (2017, October 26). RIEGL VUX-1 Data Sheet. Available online: http:\/\/www.riegl.com\/."},{"key":"ref_19","unstructured":"Shan, J., and Toth, C.K. (2008). Strip adjustmentand registration. Topographic Laser Ranging and Scanning: Principles and Processing, CRC Press."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1016\/S0924-2716(98)00009-4","article-title":"Determination of Terrain Models in Wooded Areas with Airborne Laser Scanner Data","volume":"53","author":"Kraus","year":"1998","journal-title":"ISPRS J. Photogramm. Remote Sens."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1016\/j.isprsjprs.2004.05.004","article-title":"Experimental Comparison of filtering algorithms for bare-earth extraction from airborne laser scanning point clouds","volume":"59","author":"Sithole","year":"2004","journal-title":"ISPRS J. Photogramm. Remote Sens."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Luk\u00e1cs, G., Marshall, A., and Martin, R. (1997). Geometric Least-Squares Fitting of Spheres, Cylinders, Cones and Tori, Department of Computer Science, University of Wales. Technical Report.","DOI":"10.1007\/BFb0055697"},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Luoma, V., Saarinen, N., Wulder, M.A., White, J.C., Vastaranta, M., Holopainen, M., and Hyypp\u00e4, J. (2017). Assessing Precision in Conventional Field Measurements of Individual Tree Attributes. Forests, 8.","DOI":"10.3390\/f8020038"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"4581","DOI":"10.3390\/rs70404581","article-title":"Analysis of Geometric Primitives in Quantitative Structure Models of Tree Stems","volume":"7","author":"Akerblom","year":"2015","journal-title":"Remote Sens."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"272","DOI":"10.1109\/LGRS.2016.2638738","article-title":"Reconstructing Stem Cross Section Shapes from Terrestrial Laser Scanning","volume":"14","author":"Wang","year":"2017","journal-title":"IEEE Geosci. Remote Sens. Lett."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/9\/11\/1154\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T18:48:57Z","timestamp":1760208537000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/9\/11\/1154"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,11,10]]},"references-count":25,"journal-issue":{"issue":"11","published-online":{"date-parts":[[2017,11]]}},"alternative-id":["rs9111154"],"URL":"https:\/\/doi.org\/10.3390\/rs9111154","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,11,10]]}}}