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Kabbalah: on Spatio-temporal Database Visualization with Historica...

By: S. C Chiou; J. H. Lee; T. W. Hsu

Description: National Yunlin University of Science and Technol ogy, Yunlin, Taiwan. This system is made for researchers who study pattern of city or spatial transformation by using computational way to interpret data logically. In order to make use of all historical data with GIS in system, an exact metadata is necessary and needed to build first. The Cubism project is aimed to presume how different historical data normalized to become information in spatio-temporal da...

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Automated Target-free Network Orienation and Camera Calibration : ...

By: C. S. Fraser; C. Stamatopoulos

Description: Cooperative Research Centre for Spatial Information Department of Infrastructure Engineering, University of Melbourne, Victoria 3010, Australia. Automated close-range photogrammetric network orientation and camera calibration has traditionally been associated with the use of coded targets in the object space to allow for an initial relative orientation (RO) and subsequent spatial resection of the images. However, over the last decade, advances coming mainl...

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Complex Event Detection in Pedestrian Groups from Uavs : Volume I-...

By: F. Burkert; M. Butenuth

Description: Technische Universität München, Remote Sensing Technology, 80333 München, Germany. We present a new hierarchical event detection approach for highly complex scenarios in pedestrian groups on the basis of airborne image sequences from UAVs. Related work on event detection for pedestrians is capable of learning and analyzing recurring motion paths to detect abnormal paths and of analyzing the type of motion interaction between pairs of pedestrians. However, th...

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Generalisation of Submarine Features on Nautical Charts : Volume I...

By: E. Guilbert; X. Zhang

Description: Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University Hung Hom, Kowloon, Hong Kong. On most large scale and middle scale maps, relief is represented by contours and spot heights. In order to adapt the representation to the scale, the terrain is generalised either by smoothing or filtering the terrain model or by simplifying the contours. However this approach is not applicable to nautical chart construction where terrain fe...

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Positioning in Time and Space – Cost-effective Exterior Orientatio...

By: C. Briese; M. Wieser; M. Doneus; G. Verhoeven

Description: VIAS, Vienna Institute for Archaeological Science, University of Vienna, Franz-Klein-Gasse 1, 1190 Vienna, Austria. Since manned, airborne aerial reconnaissance for archaeological purposes is often characterised by more-or-less random photographing of archaeological features on the Earth, the exact position and orientation of the camera during image acquisition becomes very important in an effective inventorying and interpretation workflow of these aerial ...

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Cultural Heritage Conservation and Communication by Digital Modeli...

By: A. Bruno Jr.; R. Spallone

Description: DIST, Interuniversity Department of Regional and Urban Studies and Planning, Politecnico di Torino, Viale Mattioli 39 10125 Torino, Italy. Between the end of the twenties and the beginning of the World war two Turin, as the most of the Italian cities, was endowed by the fascist regime of many new buildings to guarantee its visibility and to control the territory: the fascist party main houses and the local ones.

The style that was adopted for th...

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Rapid Change Detection Algorithm for Disaster Management : Volume ...

By: P. Reinartz; H. Thunig; M. Ehlers; U. Michel

Description: University of Education Heidelberg, Department for Geography, Czernyring 22/11-12, 69115 Heidelberg, Germany. This paper focuses on change detection applications in areas where catastrophic events took place which resulted in rapid destruction especially of manmade objects. Standard methods for automated change detection prove not to be sufficient; therefore a new method was developed and tested. The presented method allows a fast detection and visualizati...

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Robust Aerial Object Tracking in High Dynamic Flight Maneuvers : V...

By: H. Grabner; A. Nussberger; L. Van Gool

Description: Computer Vision Laboratory, ETH Zürich, Zürich, Switzerland. Integrating drones into the civil airspace is one of the biggest challenges for civil aviation, responsible authorities and involved com- panies around the world in the upcoming years. For a full integration into non-segregated airspace such a system has to provide the capability to automatically detect and avoid other airspace users. Electro-optical cameras have proven to be an adequate sensor t...

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Pose Estimation of Web-shared Landscape Pictures : Volume Ii-3, Is...

By: D. Tuia; V. Lepetit; F. Golay; T. Produit

Description: LaSIG laboratory, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland. We propose a robust method for registering high oblique images of landscapes. Typically, an input image can be registered by matching it against a set of registered images of the same location. While this has been shown to work very well for images of popular urban landmarks, registering landscape images remains a very challenging task: For a given place, only a very sm...

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Solar Radiation Estimation on Building Roofs and Web-based Solar C...

By: S. Droghetti; F. Remondino; R. De Filippi; C. Furlanello; F. Nex; G. Agugiaro

Description: 3D Optical Metrology unit, Bruno Kessler Foundation, Trento, Italy. The aim of this study is the estimation of solar irradiance on building roofs in complex Alpine landscapes. Very high resolution geometric models of the building roofs are generated by means of advanced automated image matching methods. Models are combined with raster and vector data sources to estimate the incoming solar radiation hitting the roofs. The methodology takes into account for...

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Building Modeling from Noisy Photogrammetric Point Clouds : Volume...

By: G. Vosselman; S. Oude Elberink; B. Xiong

Description: ITC, University of Twente, Enschede, the Netherlands. The Multi-View Stereo (MVS) technology has improved significantly in the last decade, providing a much denser and more accurate point cloud than before. The point cloud now becomes a valuable data for modelling the LOD2 buildings. However, it is still not accurate enough to replace the lidar point cloud. Its relative high level of noise prevents the accurate interpretation of roof faces, e.g. one plana...

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Supervised and Unsupervised Mrf Based 3D Scene Classification in M...

By: M. Gerke; J. Xiao

Description: Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, The Netherlands. In this paper we develop and compare two methods for scene classification in 3D object space, that is, not single image pixels get classified, but voxels which carry geometric, textural and color information collected from the airborne oblique images and derived products like point clouds from dense image matching. One method is supervised, i.e....

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Automatic Detection of Building Points from Lidar and Dense Image ...

By: E. Maltezos; C. Ioannidis

Description: Laboratory of Photogrammetry, School of Rural and Surveying Engineering, National Technical University of Athens, Greece. This study aims to detect automatically building points: (a) from LIDAR point cloud using simple techniques of filtering that enhance the geometric properties of each point, and (b) from a point cloud which is extracted applying dense image matching at high resolution colour-infrared (CIR) digital aerial imagery using the stereo method se...

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An Energy Minimization Approach to Automated Extraction of Regular...

By: C. S. Fraser; C. Zhang; Y. He

Description: Cooperative Research Centre for Spatial Information, Melbourne, Australia. This paper presents an automated approach to the extraction of building footprints from airborne LiDAR data based on energy minimization. Automated 3D building reconstruction in complex urban scenes has been a long-standing challenge in photogrammetry and computer vision. Building footprints constitute a fundamental component of a 3D building model and they are useful for a variety...

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Enhanced Detection of 3D Individual Trees in Forested Areas Using ...

By: W. Yao; P. Krzystek; M. Heurich

Description: Department of Geoinformatics, Munich University of Applied Sciences, 80333 Munich, Germany. A detailed understanding of the spatial distribution of forest understory is important but difficult. LiDAR remote sensing has been developing as a promising additional instrument to the conventional field work towards automated forest inventory. Unfortunately, understory (up to 50% of the top-tree height) in mixed and multilayered forests is often ignored due to a ...

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Acquirement and Interpretation of Public Documentation of Cultural...

By: X. J. Qi; J. Shang; G. Zhang; X. W. Huo; G. L. Li; Z. Y. Huang

Description: Research Centre for Historic and Cultural Cities of National Importance, Tsinghua Tongheng Urban Planning and Design Institute, 100085 Beijing, China. The essay introduces the methodology and reflection upon the acquirement and interpretation of public documentation supporting the post-disaster reconstruction of the Shangri-La historic town after struck by fire in 2014. The proposed acquirement platform is developed on the basis of WeChat, a popular mobile...

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Recovering Prehistoric Woodworking Skills Using Spatial Analysis T...

By: K. Hanke; K. Kovács

Description: Surveying and Geoinformation Unit, University of Innsbruck, Austria. Recovering of ancient woodworking skills can be achieved by the simultaneous documentation and analysis of the tangible evidences such as the geometry parameters of prehistoric hand tools or the fine morphological characteristics of well preserved wooden archaeological finds. During this study, altogether 10 different hand tool forms and over 60 hand tool impressions were investigated fo...

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Integrated Technologies for Surveying Artefacts Damaged by Earthqu...

By: F. Fiori; R. Quattrini; R. Nespeca; P. Clini

Description: DICEA, Dept. of Civil and Building Engineering, and Architecture, Polytechnic University of Marche, Ancona, Italy. The purpose of this work is to demonstrate how, in post-earthquake intervention scenarios, the latest all-in-one laser technologies employed beyond their usual applications and integrated in more traditional survey methods, can define a comprehensive and original approach method in response to surveying issues, safety of the artefacts, speed a...

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Benchmarking Range-based and Image-based Techniques for Digitizing...

By: A. Conti; L. Fiorini; V. Bonora; G. Tucci

Description: GECO Lab., University of Florence - DICEA Dept., Via P.A. Micheli, 8, Florence, Italy. 3D high resolution models can be produced both using range-based and image-based techniques. In this work, we evaluate the performance of the Photoscan commercial software in a challenging project: the digitization of an earthenware frieze of about 36 m in length. In order to choose the most effective technique and to define the best workflow for on-the-field data acquis...

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Jeddah Historical Building Information Modelling Jhbim – Object Li...

By: A. Alitany; J. Boehm; S. Robson; A. Baik

Description: University College London, Civil, Environmental & Geomatics Engineering, London, UK. The theory of using Building Information Modelling BIM has been used in several Heritage places in the worldwide, in the case of conserving, documenting, managing, and creating full engineering drawings and information. However, one of the most serious issues that facing many experts in order to use the Historical Building Information Modelling HBIM, is creating the compli...

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