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The design and implementation of Geographic Information Systems / S.J. Anderson (2003)
Titre : The design and implementation of Geographic Information Systems Type de document : Monographie Auteurs : S.J. Anderson, Auteur ; J.E. Harmon, Auteur Editeur : New York, Londres, Hoboken (New Jersey), ... : John Wiley & Sons Année de publication : 2003 Importance : 264 p. Format : 16 x 24 cm ISBN/ISSN/EAN : 0-0471-20488-9 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] analyse coût-avantage
[Termes IGN] analyse des besoins
[Termes IGN] attribut
[Termes IGN] conversion de données
[Termes IGN] données localisées
[Termes IGN] données maillées
[Termes IGN] données vectorielles
[Termes IGN] exhaustivité des données
[Termes IGN] implémentation (informatique)
[Termes IGN] index spatial
[Termes IGN] logiciel SIG
[Termes IGN] métadonnées
[Termes IGN] modèle conceptuel de données localisées
[Termes IGN] modèle logique de données
[Termes IGN] objet géographique
[Termes IGN] projection
[Termes IGN] propriété intellectuelle
[Termes IGN] relation topologique
[Termes IGN] système d'information géographique
[Termes IGN] utilisateurRésumé : (Editeur) The Design and Implementation of Geographic Information Systems provides a unique nuts-and-bolts perspective of enterprise GIS design, a geographic information system that meets the needs of numerous users across multiple units in an organization. This hands-on guide offers in-depth, up-to-date material on issues of spatial data when designing and implementing enterprise GIS, along with insightful, illustrative examples. From the predesign planning stages dealing with assessment, requirement analysis, organizational issues, and cost analysis, to integrating legacy MIS systems and preparing for future developments in database design, this user-friendly book addresses all the fundamental aspects of the design and implementation of GIS, regardless of soltware or hardware. It offers helpful "decision trees" to assist in strategic planning, as well as proven strategies for application development, interface design, and enabling Web-bases access. Numerous case studies and examples from the private and public sectors demonstrate how these strategies and approaches play out in the real world. Note de contenu : CHAPTER 1 - INTRODUCTION
Who Should Read This Book - What Is a Geographic information System? - Corporate or Enterprise Geographic Information Systems - The GIS Strategic Plan
CHAPTER 2 - BEFORE DESIGN: NEEDS ASSESSMENT AND REQUIREMENTS ANALYSIS
- Organizational Involvement
- Need for Education, Support, and Commitment of Management-Corporate Implementation Takes Time
- Manage Users' Expectations -No Unrealistic Promises
- Needs Assessment/Requirements Analysis
- Assessing the Current Users
- Categorizing Users
- Other Factors with Users
- Applications
- Evaluating Existing Data
- Accuracy
- Completeness
- Maintenance
- Software Selection
- Technical Environment
- Assessing Costs and Benefits
- Pulling the Needs Together
CHAPTER 3 - DESIGNING THE GIS DATABASE SCHEMA
- Elements of a Schema
- Data Dictionary Tables and Relationships Metadata
CHAPTER 4 - DESIGNING SPATIAL DATA
- Choosing the Appropriate Mix of Data Models
- Choosing a Subset of Reality
- The Two Principal Data Models
- Layers and Objects
- Representing Geographic Features
- Topologic Relationships
- Types of Spatial Objects
- Issues around the Third Dimension
- Accuracy, Precision, and Completeness
- Accuracy Concerns - Global Positioning Systems
- Differential Processing
- Accuracy across Layers
- Choosing a Coordinate System and Map Projection
- Decimal Longitude and Latitude or Projected Data
- Characteristics of Map Projections
- Spanning Existing Map Projection Zones
- Selection of Projection for Large Areas
- Spatial Indexing
CHAPTER 5 - DESIGN ISSUES FOR ATTRIBUTE DATA
- General Principles: Fields in Both D and C Tables
- Specific Principles for C Tables
- Principles for Fields in D Tables
- Designing Input Elements
- Design f Output Elements
- Application Design
CHAPTER 6 - REMOTELY SENSED DATA AS BACKGROUND LAYERS AND DATA SOURCES
- Aerial Photography as Backdrop Information
- Capture Data as Well?
- Dealing with the Images
- Integrating Remotely Sensed Information oath GIS
- Questions to Ask
CHAPTER 7 IMPLEMENTATION : DATA DEVELOPMENT AND CONVERSION
- System Configuration and Product Architecture Plan
- Data Development and Conversion Plan
- Capturing Digital Data
- Optical Character Recognition
- In-House or Out-Source Data Development of Conversion
- Selecting a Vendor
- Perform a Pilot Project
CHAPTER 8 IMPLEMENTATION : SELECTING HARDWARE AND SOFTWARE
- Software Considerations
- Evaluating Software
- How to Select Your Software
- Hardware Concerns
- Networking Issues
- Types of Networks
- The Capacity of the Network
CHAPTER 9 - DESIGNING THE ORGANIZATION FOR G IS
- Ownership of Geographic Information
- User Roles
- Staffing the Design and Implementation Process
- Where to Put the GlS
- Designing the Data Flow
CHAPTER 10 - EARLY MANAGEMENT CONCERNS : INTERACTING WITH THE SYSTEM
- User Roles
- Managing User Roles
- Managing Desktop Interfaces
- Managing World Wide Web-Based Interfaces
- GIS Interaction and the Organization
- A New Committee
- Evaluation
- Access Controls
- Controlling Public Access
- Managing the System -The Maintenance Plan
- Data Dissemination
- GIS Data Distribution through the World Wide Web
- SummaryNuméro de notice : 18849 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=55490 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18849-01 37.30 Livre Centre de documentation Géomatique Disponible
Titre : Towards a coherent integration of 2D linear data into a DTM Type de document : Article/Communication Auteurs : Frédéric Rousseaux, Auteur ; Olivier Bonin , Auteur Editeur : International Cartographic Association ICA - Association cartographique internationale ACI Année de publication : 2003 Conférence : ICC 2003, 21st International Cartographic Conference of ICA 10/08/2003 16/08/2003 Durban Afrique du sud Importance : pp 1936 - 1942 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] données vectorielles
[Termes IGN] inondation
[Termes IGN] intégration de données
[Termes IGN] Java (langage de programmation)
[Termes IGN] modèle numérique de terrain
[Termes IGN] objet géographique linéaire
[Termes IGN] objet géographique zonal
[Termes IGN] Oracle 9I
[Termes IGN] Oxygène (plateforme de généralisation)
[Termes IGN] réseau routier
[Termes IGN] risque naturel
[Termes IGN] simulationRésumé : (Auteur) This paper deals with the integration of vector data into a digital terrain model (DTM) to perform flood risk analysis. The integration of geographic 2D vector objects into a DTM usually raises data coherence issues. To address these issues, 2D objects are transformed into 2,5D objects and then integrated into an enriched DTM in a coherent way. We focus our research on objects describing civil engineering works such as roads, dikes, or embankments. Such a coherent integration of 2D objects into a DTM can change flood behaviour simulations deeply and thus predicted damage areas. The first part of this paper describes the general methodology used for road integration. Simple placing of 2D linear roads on a DIM generally gives unrealistic results. Our approach consists in transforming 2D linear data into 2.5D surfaces describing terrain in a more realistic way. We transform 2D linear roads into 2.5D surfacic roads by assigning them a width, and computing their elevation. The altitude of each point of the road is computed with the help of the DTM and the altimetric attribute of nodes, under slope and regularity constraints. Then, we compute a new DTM, resulting from the original DTM constrained by the 2.5D roads. We observe that this integration alters the DTM locally. The second part reports on the analysis of a DTM after the integration of roads. We base our analysis on two main applications: visualisation and hydrology. As roads were initially captured at a much higher scale than the DTM, the creation of a microrelief is observed. This microrelief may contain artefacts, which could create uncertain areas. The study of these areas helps us to define the range of scale and the validation of such methods. By comparing the results obtained by hydrological simulation with our refined DTM and with the initial DTM, we highlight the precision and coherence gained when using this enriched DTM. With our algorithms. the new DTM is more accurate on certain keyareas such as dikes or roads, which are civil engineering works that are very important for flood simulations. The third part focuses on the implementation of these algorithms in an experimental Java GIS platform, linked to an Oracle 9i database. Then this part report on the analysis of our TIN enrichment. The original TIN is locally modified. Some inconsistencies between the original TIN and the vector data are fixed thanks to the integration of new 2.5D information. For example, in the enriched TIN, rivers follow the talwegs. Without 2.5D vector information, talwegs are interpolated from contour lines and are not consistent with the river network. As a conclusion, we suggest that our work can be extended to fit other applications, such as trajectory computation. Numéro de notice : C2003-021 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE/INFORMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65000 Documents numériques
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Towards a coherent integration ... - pdfAdobe Acrobat PDF Zur Automation berührungsloser 3D-Objekterfassung im Nahbereich / M. Hovenbitzer (2003)
Titre : Zur Automation berührungsloser 3D-Objekterfassung im Nahbereich Titre original : [L'automatisation de la saisie d'objet 3D à distance] Type de document : Thèse/HDR Auteurs : M. Hovenbitzer, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2003 Collection : DGK - C Sous-collection : Dissertationen num. 556 Importance : 82 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-9595-3 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Photogrammétrie terrestre
[Termes IGN] analyse comparative
[Termes IGN] détecteur à transfert de charge
[Termes IGN] données localisées 3D
[Termes IGN] étalonnage d'instrument
[Termes IGN] instrument de mesure
[Termes IGN] lasergrammétrie
[Termes IGN] photogrammétrie architecturale
[Termes IGN] photogrammétrie métrologique
[Termes IGN] primitive géométrique
[Termes IGN] primitive volumique
[Termes IGN] semis de points
[Termes IGN] tachéomètre électronique
[Termes IGN] télémétrie laser terrestreIndex. décimale : 33.70 Photogrammétrie terrestre Résumé : (Auteur) This thesis describes the realization and the calibration of two measurement systems, which are designed for measuring contactless three dimensional object points in close range. A well adapted way of data processing is presented, which shows the reduction from a large amount of object points to geometric parameters of object surfaces. First the possible applications for such systems are shown. The spectrum ranges from the interior scanning for facility management systems over documentations of archaeological excavations to virtual representations of buildings for purposes of the real estatetrade. Afterwards the existing up to date systems for measuring three dimensional coordinates in close range are described.
The two developed measuring systems are described in detail. First the system Hybmess is introduced. The system is based on a standard motorized tacheometer. An additional CCDLinecamera is attached to the tacheometer below the telescope. The tacheometer is controlled by a computer to allow automatic positioning of the tacheometer and thus the camera. A projection unit is also mounted on the tacheometer. Structured light patterns are used to determine the object coordinates by intersection. The necessary Graycode patterns are projected by a laser beam deflected by a rotating prism. The interpretation of all projected patterns leads to a binary code for the last and most important pattern. This binary code contains the angle information which is necessary for calculating the intersection.
The second measuring system MLMS determines the coordinates of surface points by reflectorless distance measurement. The base sensor of the measuring system is the unit LMS 200 of the SICK company. This sensor is able to measure fanshaped distances with an apex angle of 180'. The sensor measures with the time of flight principle. A motorized rotation stage turns the base sensor around the vertical axis, so that a three dimensional scanning of the object is possible.
The processing of the measured data starts with the visualization of the scatterplot and results in a specification of the geometric parameters of the object. Two forms of visualization have been developed, which were well adapted to the measuring systems. The first form is the winding off visualization. Corresponding to the angle grid of the measurement system a picture is calculated, in which the local minima and maxima of the distances are marked with white dots. The second form of visualization is the perspective one. The gray value of the pixel depends on the distance between the central point and the object points. Because of the great amount of object points, the shapes of the object have to be extracted from the point cloud. For automatic respectively semiautomatic extraction of plains, spheres and cylinders algorithms have been developed. The intersection of these geometric shapes are corners or edges of the object. For scanning larger objects the combination of several instrument positions is necessary. The identical points can be the centers of measured spheres or the intersections of three measured plains. Mostly for the documentation of the object additional digital images are taken or the measurement system produces a digital image during the process of measuring. This additional information can be used for texturemapping the CADmodel of the object, or for measuring hidden objects or small details. The accuracy and precision of the new measuring systems is studied on some selected geometric objects. The scanning of interiors is an example for the presented way to combine several instrument positions.Numéro de notice : 13160 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Thèse étrangère Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54897 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13160-01 33.70 Livre Centre de documentation Photogrammétrie - Lasergrammétrie Disponible Creation of digital terrain models using an adaptative Lidar vegetation point removal process / G.T. Raber in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 12 (December 2002)
[article]
Titre : Creation of digital terrain models using an adaptative Lidar vegetation point removal process Type de document : Article/Communication Auteurs : G.T. Raber, Auteur ; J.R. Jensen, Auteur ; S.R. Schill, Auteur ; K. Schuckman, Auteur Année de publication : 2002 Article en page(s) : pp 1307 - 1315 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] carte de la végétation
[Termes IGN] données lidar
[Termes IGN] erreur
[Termes IGN] lasergrammétrie
[Termes IGN] modèle numérique de terrain
[Termes IGN] végétationRésumé : (Auteur) Commercial small-footprint lidar remote sensing has become an established tool for the creation of digital terrain models (DTMs). Unfortunately, even ofter the application of lidar vegetation point removal algorithms, vertical DTM error is not uniform and varies according to land cover. This paper presents the results of the application of an adaptive lidar vegetation removal process to a raw lidar dataset of a small area in North Carolina. This process utilized an existing lidar vegetation point removal algorithm in which the parameters were adaptively adjusted based on a vegetation map. The vegetation map was derived through the exclusive use of the lidar dataset, making the process independent of ancillary data. The vertical error and surface form of the resulting DTM were then compared to DTMs created using traditional techniques. The results indicate that the adaptive method produces a superior DTM. Numéro de notice : A2002-299 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : sans En ligne : https://www.asprs.org/wp-content/uploads/pers/2002journal/december/2002_dec_1307 [...] Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22210
in Photogrammetric Engineering & Remote Sensing, PERS > vol 68 n° 12 (December 2002) . - pp 1307 - 1315[article]High-quality DTMs: combining laser scanning, digital photogrammetry and ground survey / P. Reiss in GIM international, vol 16 n° 11 (November 2002)
[article]
Titre : High-quality DTMs: combining laser scanning, digital photogrammetry and ground survey Type de document : Article/Communication Auteurs : P. Reiss, Auteur Année de publication : 2002 Article en page(s) : pp 40 - 43 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] Bavière (Allemagne)
[Termes IGN] Bayerisches Landesvermessungsamt
[Termes IGN] données de terrain
[Termes IGN] données lidar
[Termes IGN] filtre numérique
[Termes IGN] modèle numérique de terrain
[Termes IGN] qualité des données
[Termes IGN] réalité de terrain
[Termes IGN] station de travail de photogrammétrie numériqueRésumé : (Editeur) Photogrammetry is an efficient technique for mapping the topography of larger areas. However, areas such as coniferous forests, housing and flat terrain in open fields have to be completed by tedious and time-consuming ground surveys. The author incorporated laser scanning (LiDAR) to diminish the amount of ground work. LiDAR is the only technique which enables more or less automatic and accurate collection of terrain data over bare ground, even within forests. LIDAR reduces the percentage of areas to be completed by ground surveys from forty to less than ten. Photogrammetric stereo-compilation was also reduced. This led to an increase in throughput by a factor of four to five. However, these figures do not represent all that may eventually be achieved. Copyright GITC Numéro de notice : A2002-331 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22242
in GIM international > vol 16 n° 11 (November 2002) . - pp 40 - 43[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 061-02111 SL Revue Centre de documentation Revues en salle Disponible Le procédé de navigation spatiale Transmap (R) : application à l'imagerie territoriale / Franck Perdrizet in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 168 (Octobre 2002)PermalinkDetecting and measuring individual trees using an airborne laser scanner / A. Persson in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 9 (September 2002)PermalinkGrid, ground, and globe : Distances in the GPS era / Thomas H. Meyer in Surveying and land information science, vol 62 n° 3 (01/09/2002)PermalinkUn laser héliporté pour couvrir les zones inaccessibles de la forêt Guyanaise / M. Mayo in Géomètre, vol 2002 n° 9 (septembre 2002)PermalinkLes outils cartographiques et SIG développés dans le cadre des études hydrauliques à la compagnie nationale du Rhône / M. Garcia in XYZ, n° 92 (septembre - novembre 2002)PermalinkPublier des cartes sur Internet : ces solutions qui nous viennent du graphique / Françoise de Blomac in SIG la lettre, n° 39 (septembre 2002)PermalinkSimultaneous graphic generalization of vector data sets / Lars Harrie in Geoinformatica, vol 6 n° 3 (September - November 2002)PermalinkUpdating solutions of the rational function model using additional control information / Y. Hu in Photogrammetric Engineering & Remote Sensing, PERS, vol 68 n° 7 (July 2002)PermalinkComparative evaluation of Indian remote sensing multi-spectral sensors data for crop classification / R.P. Singh in Geocarto international, vol 17 n° 2 (June - August 2002)Permalink3D building models using laser scanning: creating a building information system: the ancient cathedral of Bergamo / Luigi Colombo in GIM international, vol 16 n° 5 (May 2002)Permalink