Pub Date : 2014-08-01DOI: 10.1127/1432-8364/2014/0222
E. Bernhard, A. Twele, S. Martinis
Various frequencies (e.g. visible light, infrared, microwaves) from remote sensing sensors can be used for active fire mapping, forest fire detection and fire emission assessment. However, little is known about the applicability of X-band SAR data for burned area detection. This paper presents a detailed SAR backscatter coefficient analysis and accuracy assessment with respect to CORINE 2006 land cover data. For this purpose five forest fires have been analyzed. Dry as well as wet acquisition conditions have been taken into account. The analysis demonstrated that largest differences in backscatter coefficients between pre- and post-fire conditions were linked to tall and dense vegetation types. Contrarily, scant vegetation was marked by lowest signal differences. High correlation coefficients have been obtained from regression analysis between vegetation indices and SAR backscatter changes. Moreover, a burned area classification algorithm with different thresholds for each vegetation type has been applied. The classification result illustrated that areas abundantly covered with vegetation showed classification accuracies of ~91 %, whereas sparse vegetation achieved ~5 % accuracies.
{"title":"The effect of vegetation type and density on X-band SAR backscatter after forest fires","authors":"E. Bernhard, A. Twele, S. Martinis","doi":"10.1127/1432-8364/2014/0222","DOIUrl":"https://doi.org/10.1127/1432-8364/2014/0222","url":null,"abstract":"Various frequencies (e.g. visible light, infrared, microwaves) from remote sensing sensors can be used for active fire mapping, forest fire detection and fire emission assessment. However, little is known about the applicability of X-band SAR data for burned area detection. This paper presents a detailed SAR backscatter coefficient analysis and accuracy assessment with respect to CORINE 2006 land cover data. For this purpose five forest fires have been analyzed. Dry as well as wet acquisition conditions have been taken into account. The analysis demonstrated that largest differences in backscatter coefficients between pre- and post-fire conditions were linked to tall and dense vegetation types. Contrarily, scant vegetation was marked by lowest signal differences. High correlation coefficients have been obtained from regression analysis between vegetation indices and SAR backscatter changes. Moreover, a burned area classification algorithm with different thresholds for each vegetation type has been applied. The classification result illustrated that areas abundantly covered with vegetation showed classification accuracies of ~91 %, whereas sparse vegetation achieved ~5 % accuracies.","PeriodicalId":56096,"journal":{"name":"Photogrammetrie Fernerkundung Geoinformation","volume":"25 1","pages":"275-285"},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79378207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-08-01DOI: 10.1127/1432-8364/2014/0241
J. Brauchle, W. Rüther-Kindel, R. Berger
The ATISS measurement drone, developed at the University of Applied Sciences Wildau, is an electrical powered autonomous motor glider with a maximum take-off weight of 25 kg including a payload capacity of up to 10 kg. Two engines enable ultra short take-off procedures and the motor glider design results in a 1 h endurance. The concept of ATISS is based on the idea to strictly separate between aircraft and payload functions, which makes it a very flexible research platform for miscellaneous applications. In a project together with German Aerospace Center (DLR) this carrier was used for demonstrating a novel approach in high-resolution digital terrain modelling. A lightweight, 3D-capable photogrammetric camera called MACS-TumbleCam was developed at the DLR Berlin especially for the ATISS payload concept. The unique feature of this camera system isthe special combination of two synchronized digital cameras with an adjustable relative alignment. One camera head is oriented in a fixed nadir position while the other one can be driven to variable oblique orientations by a robotic actuator. Thus it is possible to take images from very different view directions for almost every object on the ground. Due to a parametric boresight calibration a lowcost inertial orientation system can be used. The evaluation of the first test flights shows features of the system, i.e. derived high-precision 3Dmodels of urban structures with 3 cm ground pixel resolution and high-resolution facade textures.
{"title":"MACS-TumbleCam - A Novel Approach for Aerial Oblique Imaging","authors":"J. Brauchle, W. Rüther-Kindel, R. Berger","doi":"10.1127/1432-8364/2014/0241","DOIUrl":"https://doi.org/10.1127/1432-8364/2014/0241","url":null,"abstract":"The ATISS measurement drone, developed at the University of Applied Sciences Wildau, is an electrical powered autonomous motor glider with a maximum take-off weight of 25 kg including a payload capacity of up to 10 kg. Two engines enable ultra short take-off procedures and the motor glider design results in a 1 h endurance. The concept of ATISS is based on the idea to strictly separate \u0000between aircraft and payload functions, which makes it a very flexible research platform for miscellaneous applications. \u0000In a project together with German Aerospace Center (DLR) this carrier was used for demonstrating a novel approach in high-resolution digital terrain modelling. A lightweight, 3D-capable photogrammetric camera called MACS-TumbleCam was developed at the DLR Berlin especially for the ATISS payload concept. The unique feature of this camera system isthe special combination of two synchronized digital cameras with an adjustable relative alignment. \u0000One camera head is oriented in a fixed nadir position while the other one can be driven to variable oblique orientations by a robotic actuator. Thus it is possible to take images from very different view directions for almost every object on the ground. \u0000Due to a parametric boresight calibration a lowcost inertial orientation system can be used. The evaluation of the first test flights shows features of the system, i.e. derived high-precision 3Dmodels of urban structures with 3 cm ground pixel resolution and high-resolution facade textures.","PeriodicalId":56096,"journal":{"name":"Photogrammetrie Fernerkundung Geoinformation","volume":"72 1","pages":"253-263"},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83733514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-08-01DOI: 10.1127/1432-8364/2014/0223
G. Conte, P. Rudol, Patrick Doherty
This paper presents a comparison of two light-weight and low-cost airborne mapping systems. One is based on a lidar technology and the other on a video camera. The airborne lidar system consists of ...
{"title":"Evaluation of a Light-weight Lidar and a Photogrammetric System for Unmanned Airborne Mapping Applications : [Bewertung eines Lidar-systems mit geringem Gewicht und eines photogrammetrischen Systems für Anwendungen auf einem UAV]","authors":"G. Conte, P. Rudol, Patrick Doherty","doi":"10.1127/1432-8364/2014/0223","DOIUrl":"https://doi.org/10.1127/1432-8364/2014/0223","url":null,"abstract":"This paper presents a comparison of two light-weight and low-cost airborne mapping systems. One is based on a lidar technology and the other on a video camera. The airborne lidar system consists of ...","PeriodicalId":56096,"journal":{"name":"Photogrammetrie Fernerkundung Geoinformation","volume":"66 1","pages":"287-298"},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77301060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
digital elevation model (DEM) (abDul-raHMaN & PilouK 2008). In other words, DEM continuously displays elevation changes of the Earth surface, which is directly proportional to the plane position (x,y) (abDul-raHMaN & PilouK 2008, cHaPlot et al. 2006, MillEr & laflaMME 1958). Initially, 3D models were created physically from plastic, sand, clay, etc. (li et al. 2004). Today, however, computers are used to display the Earth’s continuous surfaces in a digital form (HEESoM & MaHDJobi 2001). One of the most important issues in the field of digital modelling is the generation of a DEM with high quality and precision under minimum costs. To estimate a continuous surface, due to the limited number of samples and the necessity of reproducing altitude points,
数字高程模型(DEM) (abDul-raHMaN & PilouK 2008)。也就是说，DEM连续显示地球表面的高程变化，高程变化与平面位置(x,y)成正比(abDul-raHMaN & PilouK 2008, cHaPlot et al. 2006, MillEr & laflaMME 1958)。最初，3D模型是由塑料，沙子，粘土等物理创建的(li et al. 2004)。然而，今天，计算机被用来以数字形式显示地球的连续表面(HEESoM & MaHDJobi 2001)。在数字建模领域中，最重要的问题之一是如何以最小的成本生成高质量、高精度的DEM。为了估计一个连续的曲面，由于样本数量有限，并且需要再现高度点，
{"title":"The Assessment of using an Intelligent Algorithm for the Interpolation of Elevation in the DTM Generation Verwendung von Methoden der künstlichen Intelligenz zur Ableitung von Höhenmodellen","authors":"Hossein Bagheri, Saeed Sadeghian, Seyyed Yousef Sadjadi","doi":"10.1127/1432-8364/2014/0220","DOIUrl":"https://doi.org/10.1127/1432-8364/2014/0220","url":null,"abstract":"digital elevation model (DEM) (abDul-raHMaN & PilouK 2008). In other words, DEM continuously displays elevation changes of the Earth surface, which is directly proportional to the plane position (x,y) (abDul-raHMaN & PilouK 2008, cHaPlot et al. 2006, MillEr & laflaMME 1958). Initially, 3D models were created physically from plastic, sand, clay, etc. (li et al. 2004). Today, however, computers are used to display the Earth’s continuous surfaces in a digital form (HEESoM & MaHDJobi 2001). One of the most important issues in the field of digital modelling is the generation of a DEM with high quality and precision under minimum costs. To estimate a continuous surface, due to the limited number of samples and the necessity of reproducing altitude points,","PeriodicalId":56096,"journal":{"name":"Photogrammetrie Fernerkundung Geoinformation","volume":"6 1","pages":"197-208"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86310717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-06-01DOI: 10.1127/1432-8364/2014/0218
Eija Honkavaara, Lauri Markelin, T. Hakala, Jouni I. Peltoniemi
{"title":"The Metrology of Directional, Spectral Reflectance Factor Measurements Based on Area Format Imaging by UAVs Messung von gerichteten Reflektanzen bei hyperspektralen Flächenkameras auf UAVs","authors":"Eija Honkavaara, Lauri Markelin, T. Hakala, Jouni I. Peltoniemi","doi":"10.1127/1432-8364/2014/0218","DOIUrl":"https://doi.org/10.1127/1432-8364/2014/0218","url":null,"abstract":"","PeriodicalId":56096,"journal":{"name":"Photogrammetrie Fernerkundung Geoinformation","volume":"22 1","pages":"175-188"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73450387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-06-01DOI: 10.1127/1432-8364/2014/0219
Dimitrios Skarlatos, Stavroula Kiparissi, Sofia Theodoridou, Dimitrios Pandermalis
{"title":"A Method of Evaluating the Internal Precision of Multi-View Stereo Dense Reconstruction, Applied on Parthenon Frieze Methode zur Bewertung der internen Genauigkeit einer Dense-Stereo-Messung, dargestellt am Parthenonfries","authors":"Dimitrios Skarlatos, Stavroula Kiparissi, Sofia Theodoridou, Dimitrios Pandermalis","doi":"10.1127/1432-8364/2014/0219","DOIUrl":"https://doi.org/10.1127/1432-8364/2014/0219","url":null,"abstract":"","PeriodicalId":56096,"journal":{"name":"Photogrammetrie Fernerkundung Geoinformation","volume":"27 1","pages":"189-195"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84199349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-06-01DOI: 10.1127/1432-8364/2014/0216
Eric Matti, Stephan Nebiker
{"title":"Geometry and Colour Based Classification of Urban Point Cloud Scenes Using a Supervised Self-Organizing Map Geometrie- und farbbasierte Punktwolkenklassifizierung von urbanen Laserscanningszenen mittels überwachter SOM-Klassifikation","authors":"Eric Matti, Stephan Nebiker","doi":"10.1127/1432-8364/2014/0216","DOIUrl":"https://doi.org/10.1127/1432-8364/2014/0216","url":null,"abstract":"","PeriodicalId":56096,"journal":{"name":"Photogrammetrie Fernerkundung Geoinformation","volume":"7 1","pages":"161-173"},"PeriodicalIF":0.0,"publicationDate":"2014-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84778789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-01DOI: 10.1127/1432-8364/2014/0211
M. Möller, J. Birger, C. Gläßer
{"title":"Geometric Accuracy Assessment of Classified Land Use / Land Cover Changes","authors":"M. Möller, J. Birger, C. Gläßer","doi":"10.1127/1432-8364/2014/0211","DOIUrl":"https://doi.org/10.1127/1432-8364/2014/0211","url":null,"abstract":"","PeriodicalId":56096,"journal":{"name":"Photogrammetrie Fernerkundung Geoinformation","volume":"26 1","pages":"91-100"},"PeriodicalIF":0.0,"publicationDate":"2014-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90980349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-05-01DOI: 10.1127/1432-8364/2014/0213
Detlef Thürkow, Michael Pokladek, C. Dette, Cornelia Glässer
{"title":"3D-Landschaftsvisualisierungen für ein nachhaltiges Management zum Erhalt und zur Pflege des UNESCO Weltkulturerbes Dessau-Wörlitzer Gartenreich 3D-Landscape Visualisation to sup- port upkeeping and maintenance of the UNESCO cultural world heritage of the Garden Kingdom of Dessau–Wörlitz Gartenreich","authors":"Detlef Thürkow, Michael Pokladek, C. Dette, Cornelia Glässer","doi":"10.1127/1432-8364/2014/0213","DOIUrl":"https://doi.org/10.1127/1432-8364/2014/0213","url":null,"abstract":"","PeriodicalId":56096,"journal":{"name":"Photogrammetrie Fernerkundung Geoinformation","volume":"33 1","pages":"129-141"},"PeriodicalIF":0.0,"publicationDate":"2014-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77867844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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