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3D Modelling of Trompe L'Oeil Decorated Vaults Using Dense Matchin...

By: F. Noardo; A. Spano; A. Lingua; F. Chiabrando

Description: Politecnico di Torino, Dipartimento di Ingegneria dell'Ambiente, del Territorio e delle Infrastrutture, Corso Duca degli Abruzzi 24, 10129 Torino, Italyo. Dense matching techniques, implemented in many commercial and open source software, are useful instruments for carrying out a rapid and detailed analysis of complex objects, including various types of details and surfaces. For this reason these tools were tested in the metric survey of a frescoed ceiling...

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Comparing Image-based Methods for Assessing Visual Clutter in Gene...

By: M. Dumont; G. Touya; M. Lalanne; B. Decherf

Description: COGIT, IGN, 94165 Saint-Mandé, France. Map generalization abstracts and simplifies geographic information to derive maps at smaller scales. The automation of map generalization requires techniques to evaluate the global quality of a generalized map. The quality and legibility of a generalized map is related to the complexity of the map, or the amount of clutter in the map, i.e. the excessive amount of information and its disorganization. Computer vision rese...

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Robust Feature Tracking in Image Sequences Using View Geometric Co...

By: J. Lawver; A. Yilmaz

Description: The Ohio State University Photogrammetric Computer Vision Laboratory, 2070 Neil Ave., Columbus, OH 43210, USA. Interest point tracking across a sequence of images is a fundamental technique for determining scene motion characteristics. Traditionally, feature tracking has been performed with a variety of appearance-based comparison methods. The most common methods analyze intensity values of local pixels and subsequently attempt to match them to the most si...

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Regional Webgis User Access Patterns Based on a Weighted Bipartite...

By: R. Li; H. Wu; Y. Shen; W. Huang

Description: State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, Hubei, P.R.China. With the rapid development of geographic information services, Web Geographic Information Systems (WebGIS) have become an indispensable part of everyday life; correspondingly, map search engines have become extremely popular with users and WebGIS sites receive a massive volume of requests for access. These WebGIS users and the ...

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Saliency Based Segmentation of Satellite Images : Volume Ii-3/W4, ...

By: J. K. Ghosh; A. Sharma

Description: Research Scholar, Geomatics Section, Civil Engineering Department, Indian Institute of Technology, Roorkee, Uttarakhand, India. Saliency gives the way as humans see any image and saliency based segmentation can be eventually helpful in Psychovisual image interpretation. Keeping this in view few saliency models are used along with segmentation algorithm and only the salient segments from image have been extracted. The work is carried out for terrestrial image...

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Uncertainties of Completeness Measures in Openstreetmap – a Case S...

By: A. Zipf; S. Hahmann; H. Dorn; T. Törnros

Description: Chair of GIScience, Institute of Geography, Heidelberg University, Berliner Straße 48, 69120 Heidelberg, Germany. The completeness of buildings in OpenStreetMap (OSM) is estimated for a medium-sized German city and its surroundings by comparing the OSM data with data from an official building cadastre. As completeness measures we apply two unit-based methods that are frequently applied in similar studies. It is found that the estimation of OSM building compl...

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A Geo-visual Analytics Approach to Biological Shepherding: Modelli...

By: F. Sheth; K. Betteridge; C. J. Pettit; K. K. Benke; J.-p. Aurambout

Description: Department of Primary Industries – Parkville Centre, Future Farming Systems Research Division, PO Box 4166, Parkville, Victoria, 3052, Victoria, Australia. The lamb industry in Victoria is a significant component of the state economy with annual exports in the vicinity of $1 billion. GPS and visualisation tools can be used to monitor grazing animal movements at the farm scale and observe interactions with the environment. Modelling the spatial-temporal mov...

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A Cultural Landscape Information System Developed with Open Source...

By: M. Uhler; H. Müller; F. Würriehausen; C. Chudyk

Description: i3mainz, Institute for Spatial Information and Surveying Technology, FH Mainz, University of Applied Sciences, Lucy-Hillebrand-Straße 2, 55128 Mainz, Germany. Since 2010, the state of Rhineland-Palatinate in Germany has developed a cultural landscape information system as a process to secure and further enrich aggregate data about its cultural assets. In an open dialogue between governing authorities and citizens, the intention of the project is an active ...

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Workflows and the Role of Images for Virtual 3D Reconstruction of ...

By: S. Münster

Description: Media Centre, Dresden University of Technology, 1062 Dresden, Germany. 3D reconstruction technologies have gained importance as tools for the research and visualization of no longer extant historic objects during the last decade. Within such reconstruction processes, visual media assumes several important roles: as the most important sources especially for a reconstruction of no longer extant objects, as a tool for communication and cooperation within the ...

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Preface : Volume Ii-3/W5, Issue 1 (19/08/2015)

Description: No abstract available.

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Optimization of Land Use Suitability for Agriculture Using Integra...

By: A. R. B. Mahmud; S. Pormanafi; S. Pirasteh; S. B. Mansor

Description: Faculty of Engineering, University Putra Malaysia (UPM), 43400 Serdang, Selangor Darul Ehsan, Malaysia. In this study, a geospatial model for land use allocation was developed from the view of simulating the biological autonomous adaptability to environment and the infrastructural preference. The model was developed based on multi-agent genetic algorithm. The model was customized to accommodate the constraint set for the study area, namely the resource sav...

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Visibility Analysis of Point Cloud in Close Range Photogrammetry :...

By: M. Gerke; G. Vosselman; B. Alsadik

Description: University of Twente, ITC Faculty, EOS department, Enschede, The Netherlands. The ongoing development of advanced techniques in photogrammetry, computer vision (CV), robotics and laser scanning to efficiently acquire three dimensional geometric data offer new possibilities for many applications. The output of these techniques in the digital form is often a sparse or dense point cloud describing the 3D shape of an object. Viewing these point clouds in a co...

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Capabilities of Remote Sensing Hyperspectral Images for the Detect...

By: G. Owens; D. Bruce; A. A. Maliki

Description: Centre for Environmental Remediation and Risk Assessment (CERAR), University of South Australia, Mawson Lakes, Campus GPO Box 2471, Adelaide SA 5001, Australia. Advances in remote sensing technologies are increasingly becoming more useful for resource, ecosystem and agricultural management applications to the extent that these techniques can now also be applied for monitoring of soil contamination and human health risk assessment. While, extensive previous s...

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An Evaluation of Feature Learning Methods for High Resolution Imag...

By: J. Montoya; K. Schindler; P. Tokarczyk

Description: Institute of Geodesy and Photogrammetry, ETH Zürich, 8093 Zürich, Switzerland. Automatic image classification is one of the fundamental problems of remote sensing research. The classification problem is even more challenging in high-resolution images of urban areas, where the objects are small and heterogeneous. Two questions arise, namely which features to extract from the raw sensor data to capture the local radiometry and image structure at each pixel o...

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Thermal 3D Mapping for Object Detection in Dynamic Scenes : Volume...

By: S. Hinz; L. Hoegner; B. Jutzi; M. Weinmann; J. Leitloff; U. Stilla

Description: Institute of Photogrammetry and Remote Sensing, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany. The automatic analysis of 3D point clouds has become a crucial task in photogrammetry, remote sensing and computer vision. Whereas modern range cameras simultaneously provide both range and intensity images with high frame rates, other devices can be used to obtain further information which could be quite valuable for tasks such as object detection ...

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A Maximum Entropy Model of the Bearded Capuchin Monkey Habitat Inc...

By: S. Bernardes; L. Biondi; N. Nibbelink; D. M. Fragaszy; A. M. Howard; A. Presotto; M. Madden

Description: Dept. of Psychology, University of Georgia (UGA), Athens, GA, United States. Movement patterns of bearded capuchin monkeys (Cebus (Sapajus) libidinosus) in northeastern Brazil are likely impacted by environmental features such as elevation, vegetation density, or vegetation type. Habitat preferences of these monkeys provide insights regarding the impact of environmental features on species ecology and the degree to which they incorporate...

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Moving Window Segmentation Framework for Point Clouds : Volume I-3...

By: G. Sithole; B. Gorte

Description: Geomatics Division, School of Architecture, Planning and Geomatics, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa. As lidar point clouds become larger streamed processing becomes more attractive. This paper presents a framework for the streamed segmentation of point clouds with the intention of segmenting unstructured point clouds in real-time. The framework is composed of two main components. The first component segments points wit...

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A Parallel Implementation Framework for Remotely Sensed Image Fusi...

By: Z. Jixian; Y. Jinghui

Description: Chinese Academy of Surveying and Mapping, Lianhuachi West Road 28, Beijing 100830, P. R. China. The fusion algorithms are data-intensive and computation-intensive, whose processing performance is low if common implementation techniques are adopted. This paper presents a parallel implementation framework based on a generalized fusion model and parallel computing for remotely sensed image fusion. The steps in the implementation corresponding to each fusion ...

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A Proposed Framework to Unmix Scattering Mechanisms of Polarimetri...

By: G. Mercier; J.-p. Rudant; S. Giordano

Description: IGN, ENSG, DIAS, 6 et 8 avenue Blaise Pascal, 77455 Marne la Vallée, France. A new approach has been proposed for radar and optical image fusion. Candidate images for fusion are polarimetric radar images and very high resolution stereoscopic optical images. The fused product is expected to produce more reliable large scale land cover classifications. In the first part of this paper, observation-based state-of-the-art methods for optical and radar image fus...

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Detection of Lying Tree Stems from Airborne Laser Scanning Data Us...

By: M. Hollaus; W. Mücke; J. E. S. Fransson; E. Lindberg; N. Pfeifer

Description: Department of Geodesy and Geoinformation, Vienna University of Technology, Austria. Dead wood is an important habitat characteristic in forests. However, dead wood lying on the ground below a canopy is difficult to detect from remotely sensed data. Data from airborne laser scanning include measurement of surfaces below the canopy, thus offering the potential to model objects on the ground. This paper describes a new line template matching algorithm for det...

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