XXth ISPRS
Congress
General Informations
In these pages you can find all papers presented in the XXth ISPRS Congress. It was held under the
title "Geo-Imagery Bridging Continents", from 12 to 23 July 2004 in Istanbul, Turkey.
All articles are provided in PDF format. The "Acrobat Reader" may be downloaded
here
For all articles, the copyright resides with the author(s) of a paper except where it is retained by the
author's employer.
Proceedings Volume: IAPRS, Vol.XXXV, ISSN 1682-1750
Commission I papers
, Vol. XXXV, part B1
Commission II papers
, Vol. XXXV, part B2
Commission III papers
, Vol. XXXV, part B3
Commission IV papers
, Vol. XXXV, part B4
Commission V papers
, Vol. XXXV, part B5
- ThS 1: Integration and Fusion of Data and Models
- ThS 17: Laser Scanning Acquisition and Modeling Techniques
Commission VI papers
, Vol. XXXV, part B6
Commission VII papers
, Vol. XXXV, part B7
- ThS 20: Application of High Resolution Data
Youth Forum papers
, Vol. XXXV, part B8
Search a paper within www.isprs.org
If you want to contact the editors:
Prof.Orhan ALtan (actual ISPRS secretary general):
oaltan@itu.edu.tr
Other documents:
List of the XXth Congress Partecipants
(Excel file, 240Kb)
Decisons General Assembly
during the XXth Congress (PDF, 10 Kb)
If you note some errors in the links or some missing papers, please inform me!
Last change: 24-Sept-2004 by Fabio Remondino
Geo-Imagery Bridging Continents
XXth ISPRS Congress, 12-23 July 2004 Istanbul, Turkey Commission 4
Table of Contents
The Basic Topology Model of Spherical Surface Digital Space
Hou Miao-le p. 1 ff.
Full article in PDF
Operators for Cell Tuple-based Spatiotemporal Data Model
Raza Ale p. 7 ff.
Full article in PDF
Representation of a 3-d City Model in Spatial Object-relational Databases
Gröger G., Reuter M., Plümer L. p. 13 ff.
Full article in PDF
The Design and Development of a Temporal Gis for Cadastral and Land Title Data of Turkey
Cömert Ç., Alkan M. p. 19 ff.
Full article in PDF
Implementation of Progressive Transmission Algorithms for Vector Map Data in Web-based Visualization
Yang B.s.,purves R. S.,weibel R. p. 25 ff.
Full article in PDF
Spatial Data Modelling, Dual Partitions and The Specification of Semantics
Martien Molenaar p. 31 ff.
Full article in PDF
3d Spatial Data Model Based on Quasi Tri-prism Volume and its Application in Subsurface Engineering
Cheng P., Shi W. ,Gong J. ,Zhou G. p. 39 ff.
Spatiotemporal Analysis with ST Helixes
Stefanidis A. , Eickhorst K., Agouris P. p. 45 ff.
Full article in PDF
Object - Relational Features for Modeling and Analysis of Spatio - Temporal Data
Scheugenpflug S., Schilcher M. p. 51 ff.
Full article in PDF
Algorithmic Development of an Optimal Path Computation Model Based on Topographic Map Features
Mandy,tanga Y.f.,lilian,pun-chengb S.c. p. 57 ff.
Full article in PDF
Morphological Terrain Classification and Analysis Using Geostatistical Techniques
Azañón J.m.,delgado J.,gómez A. p. 62 ff.
Full article in PDF
Aspects of Data Modeling of Fused Surfaces with Planimetric Data in a Topographic Geodatabase
Abdulmuttalib Hussein M. p. 68 ff.
Full article in PDF
Gis-supported Precise Spatio-temporal Modelling from Airborne Sar Imagery
Pang L., Zhang J. X., Zhang M. B., Gao W. J., Wanga P. p. 72 ff.
Full article in PDF
Modelling Local Gps/levelling Geoid with The Assesstment of Inverse Distance Weighting and Geostatistical Kriging Methods
Erol B., Çelik R. N. p. 76 ff.
Full article in PDF
The Importance of Time Dimension in The Vector-based Turkish Forest Information System
Yilmaz O. Y. p. 81 ff.
Full article in PDF
Sensitivity Analysis of A Gis-based Cellular Automata Model
Kocabas V. , Dragicevic S. p. 86 ff.
Full article in PDF
Automatic Point Matching of Gis Geometric Figures
Beinat A., Crosilla F., Sossai E. p. 92 ff.
Full article in PDF
Spatial Access Methods for Organizing Laserscanner Data
Brinkhoff T. p. 98 ff.
Full article in PDF
Research on The Three-dimensional Abstraction and Description of Reality
Chengminga L., Jizhoua W., Zongjianb L. p. 103 ff. Full article in PDF Geo-information Management Klime ová D. p. 107 ff. Full article in PDF
A Gis Database for Time-evolving Spatial Objects
Dae-soo C., In-sung J., Kyoung-wook M., Jong-hyun P. p. 112 ff.
Full article in PDF
Technologies and Standards on Spatial Data Sharing
Gong J., Shi L., Du D., Rolf A. De By p. 118 ff.
Full article in PDF
The Harmonisation Challenge of Core National Topographic Databases in The Eu-project Gimodig
Afflerbach S., Illert A., Sarjakoski T. p. 129 ff.
Full article in PDF
Multiple Representation Databases to Support Visualisation on Mobile Devices
Hampe M., Sester M., Harrie L. p. 135 ff.
Full article in PDF
Internet-gis Development for Municipalities and Counties Based on Open Source Software
Bill R., Korduan P. p. 141 ff.
Full article in PDF
Design and Implementation of a Web-based Application for The Visualization of Large Scale Photogrammetric and Cartographic Data
Spanaki M., Tsoulos L. p. 147 ff.
Full article in PDF
Linking Different Geospatial Databases by Explicit Relations
Volz S., Walter V. p. 152 ff.
Full article in PDF
The Development of Algorithms for On-demand Map Editing for Internet and Mobile Users with Gml and Svg
K.L., Cheung I., Y. K., Shea G. p. 158 ff.
Full article in PDF
Web Service Based Web Feature Service
Wenjue J., Chen Y., Jianya G., Aixia L. p. 163 ff.
Full article in PDF
Chen Y., Jianya G., Wenjue J., Zhang Q. p. 167 ff.
Full article in PDF
Matching Cartographic Objects in Spatial Databases
Mantel D., Lipeck U. p. 172 ff.
Full article in PDF
Schema Translations by Xslt for Gml-encoded Geospatial Data in Heterogeneous Web-service Environment
Lehto L., Sarjakoski T. p. 177 ff.
Full article in PDF
Developing of Turkey s Disaster Management Standards for E-government
Batuk F., Emem O. , Alkis Z. , Gümüsay U. , Eraslan C. , Helvaci C. , Demir N., Türk T. , Bayram B., Alkis A. p. 183 ff.
Full article in PDF
An Attempt to Automated Generalization of Buildings and Settlement Areas in Topographic Maps
Basaraner M., Selcuk M. p. 188 ff.
Full article in PDF
Generalization of 3D Building Data Based on a Scale-Space Approach
Forberg A. p. 194 ff.
Full article in PDF
Cartographic Generalization in Virtual Reality
Frery A. C., Silva C. K. R., Costa E. De B., Almeida E. S. p. 200 ff.
Full article in PDF
Constraint-based Generalization of Soil Map
Gao W., Song A., Jianya G. p. 205 ff.
Full article in PDF
A Combined Automated Generalization Model of Spatial Active Objects
Joubran J. , Daoud A. , Doytsher Y. p. 210 ff.
Full article in PDF
Graphics and Language as Complementary Formal Representations for Geospatial Descriptions
Bähr H. P., Müller M. p. 216 ff.
Full article in PDF
Multiple Representations In Dbms: Two Algorithms
Stotera J., Zlatanovab S. p. 222 ff.
Full article in PDF
Modeling of Conflicts for Screen Map Labeling
Petzold I., Gröger G. , Plümer L. p. 228 ff.
Full article in PDF
Buhom: A Program for Enhancement of Geometric Topologic Consistency of Building Objects
Bildirici I. O., Heidorn D. p. 234 ff.
Full article in PDF
The Multi-resolution Characteristics of Spatial Data in Vietnam Land Administration
Trung T. N. p. 238 ff.
Full article in PDF
Junction Modeling in Vehicle Navigation Maps and Multiple Representations
Dogru A. O. , Ulugtekin N. N. p. 244 ff.
Full article in PDF
Automatic Generalization of Roads and Buildings
Pingtao W., Takeshi D. p. 249 ff.
Full article in PDF
A Method for The Improvement Elevation Data Generated from Automated Photogrammetric Methods into SIS
Felicisimo A. M ., Cuartero A., Ariza F. J. p. 255 ff.
Full article in PDF
Factors Causing Uncertainties in Spatial Data Mining
Hanning Y., Shuliang W. p. 261 ff.
Full article in PDF
Data Survey and Management Techniques in Civil Protection Emergencies
Mussumeci G., Falchi U., Condorelli A. p. 265 ff.
Full article in PDF
Importance of Open Spatial Data Infrastructure
Bank E. p. 271 ff.
Full article in PDF
Tendency of Standardization of Spatial Data and Present State of its Application to Production Data in Japan
Takemoto Takashi,mizukami Koji p. 277 ff.
Full article in PDF
Handling Large Terrain Data in Gis
Wanning P., Dragan P., Crawford C. p. 281 ff.
Full article in PDF
The Digital National Framework - Bridging Information Through Geography
Murray K. J., Hart G. , Allan P. p. 287 ff.
Mainstreaming Geospatial Information for Sustainable National Development in Nigeria
Kufoniyi O. , Akinyede J. O. p. 293 ff.
Full article in PDF
Database Driven Cartographic Visualization of Vmap Database
Torun A. , Ulubay A. p. 299 ff.
Full article in PDF
Spatial Data Transfers and Storage in Distributed Wireless Gis
Lingkui M., Chengda L., Shi W. p. 305 ff.
Full article in PDF
Geodetic Infrastructure of Turkey for gis, Gps and Remote Sensing Applications
Çelik R. N., Ayan T., Deniz, Özlüdemir M. T. p. 310 ff.
Full article in PDF
On Developing Spatial Data Infrastructure of China
Deren Li, Huayi Wu p. 315 ff.
Full article in PDF
Web Services and National Spatial Data Infrastructure (nsdi)
Cömert Ç. p. 320 ff.
Full article in PDF
Hidden Communication in Frequency Domain for Information Exchange
Toz G. F. , Palancioglu H. M., Begdok E. p. 326 ff.
Full article in PDF
Digital Image Managemnet (dim) Program: an Interoperabble Web-based Image Management System
Yazdani R. p. 331 ff.
Full article in PDF
Derivation of Implicit Information from Spatial Data Sets with Data Mining
Heinzle F., Sester M. p. 335 ff.
Full article in PDF
An Efficient Method for Satellite Image Matching and Management
Jeong-ho P., Jae-ho C., Kyung-ho C. p. 341 ff.
Full article in PDF
Two Functional Software for Internal Use; Flight Planning and Presenting of Digital Orthophotos
Demirel A. S., Akdeniz H., Aksu O. p. 344 ff.
Full article in PDF
Image-based Versatile Lu Information: a Multidimensional Classification Scheme to Support Local Planning in Indonesia
Danoedoro P., Phinn S., Pullar D. p. 348 ff.
Extraction of Non-point Pollution Using Satellite Imagery Data
Sang-ik L., Yun-soo C., June-hwan K. p. 354 ff.
Full article in PDF
The Cost Analysis of Satellite Images for Using in Gis by The Pert
Cay T. , Iscan F. , Durduran S. S. p. 358 ff.
Full article in PDF
Risk Assessment for Environmental Applications: Integrated Analysis of Spatial Data Using Multi-temporal Digital orthophotos and Remote-sensing Satellite Images.
Bologna R., Minchilli M., Scognamiglio A. p. 364 ff.
Full article in PDF
Research on Spatial Database Design and Tuning Based on Oracle and Arcsde
Li Y., Ling L. p. 370 ff.
Full article in PDF
The National Orthophoto Program of Hungary Completed Under Strict Quality Control
Winkler P. p. 376 ff.
Full article in PDF
Experiences in Upgrading of Large Databases of Satellite Images
Chirici G., Gianinetto M., Scaioni M. p. 382 ff.
Full article in PDF
Image-based Driver s Guidance System
Tóth Z., Lovas T. , Mélykúti G. , Barsi Á. p. 388 ff.
Full article in PDF
Development of an Integrated Photogrammetric Cad Based Systems (ipcbs) with Emphasis on Real-time Producing of Gis-ready Data
Khademi M. H.,ebadi H. p. 391 ff.
Full article in PDF
Gis And Context Based Image Enhancement
Ehlers M., Welch R., Ling Y. p. 397 ff.
Full article in PDF
Generalization of Dense Digital Terrain Models While Enhancing Important Objects
Kremeike K. p. 403 ff.
Full article in PDF
Visualizing Moose Habitat Changes due to Infrastructure Construction in Southern Finland
Krisp J. M., Väre S., Dame J., Virrantaus K. p. 409 ff.
Full article in PDF
Bauerhansl C. H., Rottensteiner F., Briese C. p. 414 ff.
Full article in PDF
Hardware-based Texture Extraction for Building Façades
Kada M. p. 420 ff.
Full article in PDF
Representing Uncertainty in Visualisations of Future Landscapes
Appleton K., Lovett A., Dockerty T. , Sünnenberg G. p. 426 ff.
Full article in PDF
Generating Precise and Accurate 3d City Models Using Photogrammetric Data
Emem O., Batuk F. p. 431 ff.
Full article in PDF
Occlusion-free 3d Realistic Modelling of Buildings in Urban Areas
Varshosaz M. p. 437 ff.
Full article in PDF
3d City Reconstruction by Different Technologies to Manage and Reorganize The Current Situation
Tunc E., Karsli F., Ayhan E. p. 443 ff.
Full article in PDF
3d Virtual Model of Turkey
Yilmaz A., Erdogan M., Eker O. p. 449 ff.
Full article in PDF
Reseach on A Gis-based Automatic Generation Algorithm for River Boundary Adaptive Irregular Meshes
Jiang Z., Li D. , Wang W., Li L., Yao J. p. 452 ff.
Full article in PDF
Geovrml of Bakar Bay - Visualization of Ecological Hazard
ainovic I. , Medak D. p. 458 ff.
Full article in PDF
Accuracy of Dtm and Ortho Generated from Ikonos Stero Images
Kaczynski R., Majde A. , Ewiak I. p. 463 ff.
Full article in PDF
Producing Landslide Risk Map of Sebinkarahisar by Means of Remote Sensing and GIS Techniques
Seker D. Z., Altan M. O., Duran Z., Shrestha M. B., Yuasa A., Kawamura K. p. 465 ff.
Full article in PDF
The Role of Remote Sensing in Detecting Active and Fresh Faulting Zones Case Study: Northwest of Syria, Al-ghab Graben Complex
Dalati Moutaz p. 470 ff.
Full article in PDF
Time for Change Quantifying Landslide Evolution Using Historical Aerial Photographs and Modern Photogrammetric Methods
Walstra J. , Chandler J.h., Dixon N., Dijkstra T. A. p. 475 ff.
Full article in PDF
Geographical Information Systems and Digital Models
Houech Al M. A. M. p. 481 ff.
Full article in PDF
Gis Design and Application for Tourism
Turk T., Gumusay M. U. p. 485 ff.
Full article in PDF
Application of Remote Sensing Data to Landslide Mapping in Hong Kong
Vohora V. K.,donoghue S. L. p. 489 ff.
Full article in PDF
The Geomorphometric Description of Cluter Maps
Rodopoulos J. G., Miliaresis G. Ch. p. 494 ff.
Full article in PDF
Spatial and Temporal Analysis of Cutaneous Leishmaniasis incidence in São Paulo Brazil
Aparicio C., Dantas B. M. p. 499 ff.
Full article in PDF
Gis Modelling of Land Degradation in Northern-jordan Using Landsat Imagery
Essa S. p. 505 ff.
Full article in PDF
A Hierarchical Classificaton of Landsat Tm Imagery for Landcover Mapping
Avci M., Akyurek Z. p. 511 ff.
Full article in PDF
Integration of High Resolution Digital Elevation Models in 3d-gis-applications of The Environmental Information System of baden-württemberg
Hilbring D. p. 517 ff.
Full article in PDF
An Approach for The Semantically Correct Integration of a Dtm and 2d Gis Vector Data
Koch A. p. 523 ff.
Full article in PDF
Polygon-based True Orthophoto Generation
Kuzmin Y. P. , Korytnik S. A., Long O. p. 529 ff.
Full article in PDF
Putting The Pieces Together : Composing a Nationwide Dem-cover of Belgium
Roovers S., Beyen J. p. 532 ff.
Full article in PDF
A New Procedure for The Automatic Production of True Orthophotos
Biasion A. , Dequal S., Lingua A. p. 538 ff.
Full article in PDF
Calibrating Cerrado Physiognomies Using Sar and Optical Images in Brazil
Bitencourt M. D., Mesquita H. N. p. 544 ff.
Full article in PDF
Fractal and Surface Modeling
Rahnemoonfar M., Delavar M. R., Hashemi L. p. 550 ff.
Full article in PDF
Status of Orthophoto Production and Applications in Serbia
Mihajlovic D. , Mitrovic M. , Vojinovic M., So kic M. p. 555 ff.
Full article in PDF
Modeling Patch Dynamics from Integration of Cellular Automata Simulation and Historical Air-photographs Analysis
Shoshany M., Kelman E. p. 560 ff.
Full article in PDF
Study on Watershed Analysis and Sediment Regime in The Swalik Region of Nepal
Shrestha M. B., Yuasa A., Seker D. Z., Sadao T., Kensuke K. p. 564 ff.
Full article in PDF
Data Integration Related to Sensors, Data and Models
Samadzadegan F. p. 569 ff.
Full article in PDF
Fusion of Multisensor Remote Sensing Data: Assessing The Quality of Resulting Images
Saroglu E., Bektas F., Musaoglu N., Goksel C. p. 575 ff.
Full article in PDF
Small Satellites A Tool for Earth Observation
Konecny G. p. 580 ff.
Full article in PDF
Comparison of Information Contents of High Resolution Space Images
Topan H. , Büyüksalih G. , Jacobsen K. p. 583 ff.
Extraction of Buildings in Brasilian Urban Environments Using High Resolution Remote Sensing Imagery and Laser Scanner Data
Antonio J., Centeno S. , J. A. S., Miqueles, M. A. p. 589 ff.
Full article in PDF
Digital Orthophotos at a Scale Of 1:5000 from High Resolution Satellite Images
Amato R., Dardanelli G. , Emmolo D. , Franco V., Lo Brutto M. , Midulla P. , Orlando P. , Villa B. p. 593 ff.
Full article in PDF
Validated Spectral Angle Mapper Algorithm for Geological Mapping: Comparative Study Between Quickbird and Landsat-tm
Girouard G., Bannari A., Harti A. , Desrochers A. p. 599 ff.
Full article in PDF
Fusion and Perceptual Organisation of Features from Multi-sensor Data: General Concepts and New Developments
Schiewe J. p. 605 ff.
Full article in PDF
Image Processing and Gis Tools for Feature and Change Extraction
Armenakis Costas,savopol Florin p. 611 ff.
Full article in PDF
An Efficient and Robust Genetic Algorithm Approach for Automated Map Labeling
Fan H., Liu K., Zhang Z. p. 617 ff.
Full article in PDF
Orthorectification of Spot Images with The Same-pass Constraints
Erdogan M., Eker O., Yilmaz A., Aksu O. p. 623 ff.
Full article in PDF
Accuracy Assesment of High Resolution Satellite Images
Iscan L. , Aksu O. , Onder M., Atak V. O., Lenk O., Gurdal M. A. p. 627 ff.
Full article in PDF
Use of Orthophotos as Ground Truth in Ikonos Image Processing
Blascoa F., Bellan M. F., Barbaroussi V. , Miliaresis G. p. 631 ff.
Full article in PDF
Analysis of Digital Elevation Models Determined by High Resolution Space Images
Kocak G., Büyüksalih G., Jacobsen K. p. 636 ff.
Full article in PDF
Photogrammetric Research Conducted at The Antarctic Station "Academician Vernadskyy"
Dorozhynskyya O., Milinevskyy H., Hlotov V. p. 642 ff.
Full article in PDF
Geological Mapping in The Cheleken Peninsula, Turkmenistan Area Using Advanced Spaceborne Thermal Emission and Reflection Radiometer (Aster) Data
Junek P. p. 645 ff.
Full article in PDF
Production of Country Wide Dtm for Serbia and Montenegro
Cvijetinovic Z., Tomic S., Vojinovic M. p. 651 ff.
Full article in PDF
Control Extension and Orthorectification Procedures for Compiling Vegetation Databases of National Parks in The Southeastern United States
Jordan T. R. p. 657 ff.
Full article in PDF
Understanding The Rational Function Model: Methods and Applications
Yong H., Vincent T., Arie C. p. 663 ff.
Full article in PDF
Global Indexing of 3d Vector Geographic Features
Kolar J. p. 669 ff.
Full article in PDF
Heads-up Digitization of Geologic Maps Using an Independent User Interface and Converting into The Gis
Kansu E., Vur C. T., Kurucu B. p. 673 ff.
Full article in PDF
Application of Artificial Neural Network Technology in Water Color Remote Sensing Inversion of Inland Water Body Using Tm Data
Wang J. P. , Cheng S. T., Jia H. F. p. 677 ff.
Full article in PDF
The Digital Photogrametry, Cubans Experiences
Martínez P., Páez M. p. 682 ff.
Full article in PDF
Investigation of Revision Techniques for 25k Scaled Topographic Maps
Akabali O.A., Uçar E., Yilmaz A., Aksu O. p. 685 ff.
Full article in PDF
Geometric Modelling and Photogrammetric Processing of High-resolution Satellite Imagery
Xutong N., Jue W., Kaichang D., Jin-duk L., Ron L. p. 689 ff.
Full article in PDF
Accuracy Analysis of Digital Orthophotos from Very High Resolution Imagery
Passini R., Jacobsen K. p. 695 ff.
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Integration of Aster and Airborne Geophysical Data for exploration of Copper Mineralization. A Case Study of Sar cheshmeh Area
Ranjbar H., Shahriaria H. , Honarmandb M. p. 701 ff.
Full article in PDF
Digital Photogrammetry in The Practice of Open Pit Mining
Patikova A. p. 707 ff.
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Remote Sensing and Gis Integration for Land Cover Analysis, a Case Study: Gokceada Island
Bektas F. , Goksel C. p. 711 ff.
Full article in PDF
Identifying Building Types and Building Clusters Using 3D-Laser Scanning and GIS-Data
Neidhart H. , Sester M. p. 715 ff.
Full article in PDF
Using The Data Fusion Technique for Producing Thematic Map
Della R. M. R. , Fiani M., Fortunato A., Pistillo P. p. 721 ff.
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Combined Ridge-stein Estimator in Exterior Orientation for Linear Pushbroom Imagery
Wang T., Zhang Y.S., Zhang Y. p. 727 ff.
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Fusion of Lidar Data and Optical Imagery for Building Modeling
Liang-chien C. , Tee-ann T., Yi-chen S., Yen-chung L., Jiann-yeou R. p. 732 ff.
Full article in PDF
Selection of The Most Suitable Sizes of Ground Control Points in The Satellite Images
Yilmaz H. M., Yakar M., Mutluoglu O., Yildiz F. p. 738 ff.
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Preparing The Updating of The Belgian Topographical Database ; A Challenging Project
Henrion J., Beyen J., Vanommeslaeghe J. p. 742 ff.
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New Technique for Combining Panchromatic and Multispectral Spot Images for Multipurpose Image-maps
Essadiki M. p. 748 ff.
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Global Environmental Databases from Ceos Agencies
Faundeen J.l., Petiteville I., Clark D., Fisher T. p. 752 ff.
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Towards a European Service Center for Monitoring Land Surfaces at Global and Regional Scales : The Geoland / Csp Project
Leroy M., Lacaze R., Lindau R., Olesen F., Pessanha L. ,piccard I., Rosema A., Roujean J.-L., Rubel F., Wagner W., Weiss M. p. 783 ff.
A Mix Global Data Structure Based on Qtm and Voronoi
Xuesheng Z. , Jun C. , Zhilin L. p. 791 ff.
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Estimation on Tree Cover Percentage Using Terra/aster Data with Airborne Laser Scanning Data
Sato H. P. , Tateishi R. p. 797 ff.
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Developing a Global Database for Coastal Vulnerability Analysis: Design Issues and Challenges
Vafeidis A.T., Nicholls R.J., Mcfadden L., hinkel J., Grashoff P. S. p. 801 ff.
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The Economic Impacts of Thecameroon-tchad Pipeline Project on Agriculture in The Rural Zone of Bipindi (Cameroon)
Paul S., Mm Kana S., fondo S. p. 806 ff.
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Combining Mars Data in Grass Gis for Geological Mapping
Deuchler C., Wählisch M., Gehrke S., Hauber E., Oberst J., Jaumann R. p. 811 ff.
Full article in PDF
Quantitative Assessment of Automated Crater Detection on Mars
Jung R. K., Muller J.-P., Morley J. G. p. 816 ff.
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Combined Bundle Adjustment of Moc Stereo Images and Mola Altimetry Data for Precise Mars Topographic Mapping
Jong-suk Y., Jie S. p. 822 ff.
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Multi-image Shape-from-shading: Derivation of Planetary Digital Terrain Models Using Clementine Images
Lohse V., Heipke C. p. 828 ff.
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Topographic Mapping of Mars: from Hectometer to Micrometer Scales
Kirk R. L., Squyres S. W., Neukum G., The Mer Athena , Mex Hrsc S. T. p. 834 ff.
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Geomorphometric Mapping of Grand Canyon from The 1-degree Usgs Dems
Kokkas N. A. , Miliaresisv G.Ch. p. 840 ff.
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Performance of Automatic Tie Point Extraction Using Hrsc Imagery of The Mars Express Mission
Heipkea C. , Schmidt R. , Brand R. , Oberst J. , Neukum G. , the Hrsc Co-investigator Team p. 846 ff.
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Improving The Exterior Orientation of Mars Express Hrsc Imagery
Ebner H. , Spiegel M. , Albert B. , Bernd G. Neukum G., The Hrsc Co-investigator T. p. 852 ff.
Some Aspects of Multilingual Planetary Map Producing for Non-professional Audience: Visualization and Nomenclature.
Hargitai H. I. p. 858 ff.
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A New Mars Digital Image Model (mdim 2.1) Control Network
Archinal B. A. , Lee E. M. , Kirk R. L. , Duxbury T. C., Sucharski R. M., Cook D. A., Barrett J. M. p. 863 ff.
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Digital Cartography with Hrsc on Mars Express
Albertz J. , Gehrke S. , Wählisch M. , Lehmann H. , Schumacher T. Neukum G., The Hrsc Co-investigator T. p. 869 ff.
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True-3d Visualization of The Martian Surface Based on Lenticular Foil Technology Using Hrsc Imagery
Buchroithner M. F., Wälder O., Habermann K. , König B. , Gründemann T., Neukum G. , The Hrsc Co-investigator team p. 875 ff.
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Cartography of The Icy Saturnian Satellites
Roatsch T. , Oberst J. , Giese B. , Wählisch M. , Winkler V. , Matz K.-D., Jaumann R. , Neukum G. p. 879 ff.
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Digital Earth Visualization and Web-interface Capabilities Utilizing 3-d Geobrowser Technology
Foresman T. W. p. 885 ff.
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A Study of Image Fusion Techniques in Remote Sensing
Hahn M. , Samadzadegan F. p. 889 ff.
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Landsat-spot Digital Images Integration Using Geostatistical Cosimulation Techniques
Delgadoa J., Soares A. , Carvalho J. p. 895 ff.
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Capability for Data Fusion by Airborne Sensing
Sasagawa T. , Babu M. B. , Ozawa A., Tachibana K. p. 901 ff.
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Data Fusion for Environmental Assessment: Integrating Modis Imagery and Nexrad Weather Radar
Watson R. P. , Scuderi L. A. , Benedict K. K. ,kuntz T. R. p. 906 ff.
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EXPERIENCES IN UPGRADING OF LARGE DATABASES OF SATELLITE IMAGES
G. Chirici a, M. Gianinetto b, M. Scaioni b
a Università degli Studi di Firenze, geoLAB (DISTAF), Via S. Bonaventura 11-13, 50145 Quaracchi, Firenze, Italy – gherardo.chirici@unifi.it
b Politecnico di Milano, Dept. I.I.A.R., P.zza L. da Vinci 32, 20133 Milano, Italy {marco.gianinetto, marco.scaioni}@polimi.it
Commission IV, WG 5
KEY WORDS: Automation, Spatial Database, QuickBird, Spot-5, Eros-A1, Multitemporal, Image Registration ABSTRACT:
Many technical aspects are involved in the upgrading of satellite image databases: geometric registration, resampling, radiometric adjustment, mosaicking. In this paper, after an overview of all problems, we will focus on the automation of image geocoding. A procedure to perform automatic co-registration of satellite images have been already proposed by the authors (GEOREF), based on an image-to-image registration technique implementing the automatic extraction and matching of corresponding points in a robust way. In case one of the pair of co-registered images is already geocoded, the second one will be as well. Recently the implementation of GEOREF algorithms in an operational environment has been completed and its application to upgrade a database of satellite images has become possible. Furthermore, GEOREF is also able to compute the co-registration of images acquired by different sensors, involving also high resolution and multi-resolution imagery. In this paper, tests concerning high resolution and multi-resolution data fusion from Eros-A1, QuickBird and SPOT-5 satellites are presented.
1. INTRODUCTION
In the last years many countries have been carried out an almost complete coverage of satellite images of their own land, in particular at mid scale (e.g. Landsat TM/ETM+). Images are registered to a cartographic reference system (national and/or UTM) and play the role of geographic support for a spatial database, suitable to be integrated by vector layers and by other kinds of raster data.
The availability of this coverage is fundamental to investigate and to detect changes in the use of the soil. An example is represented by the well known CORINE project (Perdigão & Annoni, 1997). The availability of two co-registered remotely sensed images of the same area at two different dates enables the development of studies regarding land cover and landscape dynamics (Forman & Godron, 1986). These are usually based on the development of diachronic land use/land cover maps which are then analyzed with cross-tabulation techniques and landscape metrics. Multi-temporal maps are also the basis dataset to model future development of the landscape with different techniques such as cellular automata or Markov chains (Baker, 1989; Sklar & Costanza, 1990). Such application are often based on old aerial photos that have to be scanned and co-registered with recent photo-planes or ortho-photomaps. Obviously, the spatial database should be frequently updated by introducing new images, either of recent acquisition (to know the current use of the land) and from historical archives (to detect changes with respect to a given time in the past). Frequently, different kinds of images have to be fused together, requiring the availability of geometric transformations which are able to compensate for differences.
Among problems involved in upgrading a large database of images, data geocoding is of great importance, due to the fact that this task is a prerequisite to any other geometric task. The analysis of different techniques and algorithms that have been developed to perform image registration is out from the
purposes of this paper. Detailed information can be largely found in literature. Here we would only to make some considerations about operational aspects of image registration, and to propose a solution to this problem.
Geocoding two or more images means to establish a geometric transformation between them in order to perform their reduction to a common reference frame. Obviously, if one of the images is already calibrated to a given cartographic reference system, after geocoding the other image(s) will be as well. In case of small and mid scale satellite imagery (but practically this is generally true), this transformation is estimated on the basis of a set of control points (CPs) which are measured on both images. Usually, the measurement of CPs is carried out manually from a skilled operator, resulting in a largely time consuming task. Nevertheless, to get a high quality on this process, the operator must be very experienced, because in many cases the correct and accurate measurement of homologous CPs is not so ease. On the other hand, different automatic procedures have been developed, based on image matching algorithms; among the others, methods proposed by Corvi & Nicchiotti (1995), Dare & Dowman (2001) and Goncalves & Dowman (2003) cannot be neglected. Unfortunately, results of these studies have not followed up on the most widespread software packages which are currently used to deal with remote sensing imagery. The consideration which is easily addressed is that the most of the published algorithms have kept a very limited application, which have only concerned a small dataset and have not been implemented in a deliverable release.
2. THE GEOREF SOFTWARE
A procedure to perform automatic co-registration of satellite images have been already proposed by the authors (Carrion et al., 2001, 2002; Gianinetto & Scaioni, 2003). The adopted procedure, here referred to as GEOREF, is based on an
image-to-image registration technique looking for corresponding points through a gerarchical approach. In the published papers, experiences of registering different kinds of satellite data have been proposed (Landsat TM). Moreover, the procedure has been applied also to data fusion of high resolution satellite images (QuickBird) to a digital photo-plane. In all presented tests, results based on transforming a set of independent check points (ICPs) have shown that the accuracy of image registration is enough good for upgrading maps at scale compatible with the resolution of the used imagery.
Recently the implementation of GEOREF algorithms in an operational software has been completed and its operational application to upgrade spatial databases of satellite images has become possible. GEOREF runs under Microsoft Windows environment and is composed of a main window (Figure 1) divided in three different areas: a workspace on the left side, showing the project structure, a viewing window on the right side and a message window on the bottom.
The main tasks which are performed will be described in next sub-paragraphs.
Figure 1. The GEOREF software’s main window. 2.1 Data input
Basically the input of GEOREF is made up of the pair of images to be co-registered; the user is let to make the selection about which of them plays as master and slave.
An external pre-processing stage is needed, consisting in the extraction of both images from larger datasets. In case of multi-spectral imagery, combinations of more than one channel could be used, as done in experimental tests reported in the above-mentioned papers by the authors. The goal of this task is to render both images as similar to each other as possible concerning radiometric aspects; moreover, application of image enhancement techniques to improve contrast (e.g. a linear stretching) is wellcome.
GEOREF accepts images at a radiometric resolution of 8-bit per pixel, being this enough for matching algorithms. All common image formats can be directly read by the software.
In case master is already geocoded to a cartographic reference frame, this can be provided to GEOREF by means of an ESRI “world” file, containing 6 coefficients of the affine transformation from pixel-to-map.
2.2 Extraction of homologous points
The procedure to automatically extract CPs is based on a standard image registration approach derived from digital photogrammetry (see Heipke, 1997) and developing the method proposed by Alparone et al. (1995).
Here we do not focus on the implemented algorithms, because these have been already addressed in previous works, but we would like to show some operational issues of GEOREF and the way it can be applied to co-register images.
The registration process, once images have been imported into the project, is based on the following items:
• setup of control parameters; • extraction of interest points (IPs); • image matching;
• robust estimation of geocoding transformation;
• visualization of resampled slave image to overlap the master.
2.2.1 Setup of control parameters: Algorithm parameters are available to the user and can be set from the “Project configuration parameters” window (Figure 2). All parameters are grouped into five groups:
• interest operator parameters; • starting affine transform coefficients; • matching parameters;
• outlier rejection parameters; • georeferencing parameters.
On the left side of the configuration window are the interest operator parameters and the start affine transform coefficients. The well-known interest operator from Förstner (1986) is applied to extract from both images a set of points which are candidate to become CPs. To work out enough points, a set of parameters must be setup, two of them being crucial:
• the interest window size; usually, the smaller it is, the higher is the number of extracted IPs; on the other hand, if the window is selected too small, poor contrasted features could be found (default window size is 5x5 pixels); • the minimun distance between two IPs (usually two times
the interest window size);
• the minimum point density; this parameter allows to check the extraction of a sufficient number of IPs, depending on the image kind, quality and content. By the way, experience of the user is fundamental to properly select minimum point density. If the fixed value would not be reached, an adaptive procedure will restart the application of Förstner operator by reducing the interest window size. In the “GEOREF start affine transform coefficients” frame, a set of rough initial parameters can be entered (if known). Otherwise, these can be computed by interactively measurement of at least 3 CPs in both images.
On the right side of configuration window we find matching, outlier rejection and georeferencing parameters.
The matching process is performed by Least Squares matching technique (Grün, 1985); implementation details can be found in Scaioni (1999). The success of this algorithm will depend on the selection of following parameters:
• the size of searching window (default size is 9x9 pixels); • the size of matching window (default size is 7x7 pixels);
• the minimum correlation between homologous points (default value is 0.70).
The “outlier rejection algorithm” frame is used to specify the method to be applied to remove blunders from the set of computed CPs; an affine or a 2nd order polynomial transform may be selected.
Finally, the “georeferencing parameters” frame is used to set a minimum number of valid CPs (default value is 8) and to select the final geometric transformation model (transformation type). At the moment, only affine and 2nd order polynomial transformations are available in the GEOREF environment. Anyway, more sophisticated geometric models (higher order polynomials, RFM, splines, etc.) can be computed with third parties remote sensing software using GEOREF outputs in ASCII format.
A set of configuration parameters is expected to work well on a set of images which are similar for type, content and size, then it can be saved into a template project to be used at different times.
Figure 2. GEOREF configuration parameters window. 2.2.2 Interest point extraction and matching: After setup of parameters, GEOREF proposes an operational workflow to extract CPs:
a) generation of image pyramids: this task is implemented to cope with all cases where bad parameters for the starting affine transformation have been computed. However, the current version of the software is provided by a graphical tool which allows to manually measure with ease a minimum set of 3 CPs to compute this transformation. Findings of recent tests have shown that the use of image pyramids could be avoided in the most cases, working directly on the original images;
b) extraction of IPs: the user is requested to enter the maximum number of IPs to accept in order to reduce the computing time; in this case, all extracted IPs are ranked according to their interest value, and those featuring higher positions are selected (according to the strategy proposed in Forlani et al., 1996). Ohterwise, all IPs can be held; c) measurement of the initial affine transformation; d) finding corresponding points: the initial affine parameters are used to transfer each IP from master to
slave image; around the position found on the slave, all IPs falling into a square searching window (see 2.2.1) are matched with the point in the master. That point featuring the higher correlation after L.S. matching is selected as homologous; however, correlation must be higher than the minimum acceptance threshold. In case not enough points have been found, the process is repeated by enlarging the size of the search window.
e) outlier rejection: to cope effectively with blunders in the set of CPs, a robust technique based on Least Median Squares (Rousseeuw & Leroy, 1987) followed by classical L.S. estimation and data snooping is applied.
2.3 Visualization of results and data export
In case the georeference has been successfully completed, the user can check results by means of either analytical and graphical tools. The former concern the sigma nought of the estimated transformation (affine or polynomial); the implementation of plotting residuals onto the image is ongoing. Tha latter is given by overlapping the resampled slave image onto the master, so that the accuracy of the co-registration can be verified. An example of this visualization is presented in Figure 8.
Different kinds of information can be exported from GEOREF. First of all, a file containing coordinate of CPs in both images is available. This file could be then imported into other Remote Sensing data processing softwares, in order to recompute the registration with more accurate algorithm, based on the same CP set found by GEOREF.
In case the master image is provided by an ESRI “world” file, also that of slave is written; this fact enables to directly import the slave image into a commercial GIS software, so that a spatial database could be easily upgraded.
Furthermore, all intermediate files and images are available as by-products and can be used independently from GEOREF.
3. DATASET
GEOREF has been tested with data collected by different high resolution image sensors (Eros-A1, QuickBird and SPOT-5 HRG). The images used in this study were taken over the Caselle airport, near the city of Torino, Italy (Figure 3) and the full dataset used is composed of:
• one scene acquired by the QuickBird satellite; • one scene acquired by the SPOT-5 satellite; • one stereo scene acquired by the Eros-A1.
The main purpose of the tests has been to show the potential use of GEOREF for HRSI automatic registration and for multi-resolution and multi-sensor automatic data fusion. Therefore, tests have involved:
• 2.5-meter SPOT-5 HRG and 0.62-meter QuickBird PAN image fusion (multi-resolution and multi-sensor data fusion);
• 2.6-meter Eros-A1 stereo coverage (HRSI automatic registration);
• 2.6-meter Eros-A1 and 2.5-meter SPOT-5 HRG image fusion (multi-sensor data fusion).
Figure 3. The study area over Caselle airport (Torino, Italy).
4. IMAGE GEOCODING
4.1 QuickBird PAN vs SPOT5-HRG
QuickBird panchromatic (PAN) acquisition has a nominal 0.61 m GSD for nadir viewing and a maximum of 0.72 m GSD for 25° off-nadir viewing, in the range of 450-900 nm wavelength. The BRC60 camera mounted on the QuickBird satellite is a high-resolution pushbroom sensor with linear CCD arrays. SPOT-5 satellite carries two HRG (High Resolution Geometric) sensors for high-resolution panchromatic acquisition in the range of 480-710 nm wavelength. Each HRG instrument acquires images with 5 m GSD, and the ground processing of the data produces 2.5 m GSD images with same viewing geometry of the original images.
A first test involving multi-sensor and multi-resolution registration has been performed using the QuickBird and the SPOT images. The QuickBird PAN image taken over the Caselle airport (Figure 4) and processed by GEOREF has a 0.62 m row GSD and a 0.63 m column GSD, while the SPOT5-HRG image (Figure 5) has a 2.5 m interpolated GSD.
Using GEOREF software, homologous CPs has been automatically extracted and a six-parameter 2D affine transformation computed for image georeference. Image data fusion of QuickBird and SPOT-5 images are presented in figure 6.
4.2 Eros-A1 stereo pair co-registration
Eros-A1 Standard Mode acquisition produces panchromatic images, in the range of 500-900 nm wavelength, with a nominal 1.8 m GSD. The NA30 camera mounted on the Eros-A1 satellite is a high-resolution pushbroom sensor with 4 linear CCD arrays. Because of its asynchronous scanning mode (the satellite ground speed is faster than its rate of imaging), images collected by Eros-A1 shows image deformations and very different geometry of the taken.
A second test involving different taken and strong geometrical deformations has been performed using the Eros-A1 stereo pair taken over Caselle airport (Italy). Both image, processed by GEOREF, had a 2.6 m GSD (Figure 7).
GEOREF automatic procedure has leaded to obtain a precise overlapping between the two images. Figure 8 shows this results. In white and blue colours are represented Eros-A1 original images, and in yellow is represented the overlap between them.
Figure 4. QuickBird PAN image (0.62 m GSD) over test area.
Figure 6. Result of SPOT-5 HRG (larger image) and QuickBird PAN (image inside the box) multi-resolution data fusion. 4.3 Eros-A1 vs SPOT-5 HRG
A final test involving multi-sensor with similar geometric resolution was performed using the 2.6 m Eros-A1 image and the 2.5 m SPOT-5 HRG image over the test area.
As in the previous examples, homologous points have been automatically extracted with the GEOREF software from both images, and on the basis of the computed CPs a 2D affine transformation has been estimated for image data fusion. Figure 9 shows the resulting fusion of the original Eros-A1 and SPOT-5 images.
5. THE GEOREF SOFTWARE DISTRIBUTION POLICY
The development of GEOREF SW has been carried out for research and technology transfer purposes. All people, institutes and companies having the same interests are encouraged to contact the authors which will provide to send a fully operational demo-license. All GEOREF’s users are invited to share results of their activities and to cooperate to the development of this project.
6. CONCLUSIONS
The availability of a fast procedure, such as that implemented in GEOREF, for the co-registration of multitemporal remotely sensed images enabled an easier development of landscape change detection analysis. Such kind of spatial information are of basic importance to support land management decisions, especially within the framework of a more sustainable use of natural resources and for the analysis of man-induced landscape changes.
Figure 7. Eros-A1 stereo coverage (2.6 m GSD) over test area.
Figure 8. Result of Eros-A1 (2.6 m GSD) stereo coverage data fusion.
Figure 9. Result of Eros-A1 (lower image) and SPOT-5 HRG (upper image) image fusion.
AKNOWLEDGEMENTS
This work has been carried out under a research framework founded by the Italian Ministry for University and Research (COFIN 2001), contract title: “L’uso delle immagini satellitari ad alta risoluzione per le analisi territoriali”. SPOT-5 HRG, QuickBird PAN and Eros-A1 stereo images were provided for the framework research. The GEOREF project was founded and supported by geoLAB (Università degli Studi di Firenze). We would like to thank Ing. Francesco Livraghi for MS-Windows implementation of GEOREF software.
REFERENCES References from Books
Forman, R.T., and M. Godron, 1986. Landscape Ecology. Wiley, New York.
Rousseeuw, P.J., and A.M. Leroy, 1987. Robust Regression and Outliers Detection. John Wiley, New York
Sklar, F.H., and R. Costanza, 1990. The development of dynamic spatial models for landscape ecology: a review and prognosis. In: Turner, G.M., and R.H. Gardner, (ed.s), Quantitative Methods in Landscape Ecology: The Analyses and Interpretation of Landscape Heterogeneity, Springer, New York, pp. 239-288.
References from Journals
Alparone, L., Argenti, F., and V. Cappellini, 1995. A robust coarse-to-fine least-squares stereo matching for automatic terrain 3-D reconstruction. EaARSeL Advances in Remote Sensing, Vol. 4(2), pp. 88-93.
Baker, W.L., 1989. A review of models of landscape change. Landscape Ecology, no. 2, pp. 111–133.
Dare, P., and I. Dowman, 2001. An improved method for automatic feature-based registration of SAR and SPOT images, ISPRS Journal of Phot. and Remote Sensing, 56, pp. 13-28. Gruen, A., 1985. Adaptive least squares correlation: a powerful image matching tecnique. South African Journal of Photog., Remote Sensing and Cartography, 14(3), pp. 175-187.
Heipke, C., 1997. Automation of Interior, Relative and Absolute Orientation. ISPRS Journal of Phot. and Remote Sensing, no. 52, pp. 1-19.
References from Other Literature
Carrion, D., Gianinetto, M., Colombo, A., and M. Scaioni, 2001. Multi-spectral and multi-temporal imagery registration by image matching algorithms. In Proc. of Int. Work. on “Geo-Spatial Knowledge Processing for Natural Resource Management”, Varese, Italy, pp. 315-318.
Carrion, D, Gianinetto, A., and M. Scaioni, 2002. GEOREF: a Software for Improving the Use of Remote Sensing Images in Environmental Applications. In Proc. of IEMSS 2002 Int. Meeting, 24-27 June, Lugano, Switzerland, pp. 360-366. Corvi, M., and G. Nicchiotti, 1995. Multiresolution Image Registration, In Proc. of IEEE Int. Conf. on Image Processing, Washington D.C.
Forlani, G., Giussani, A., Scaioni, M., and G. Vassena, 1996. Target Detection and Epipolar Geometry for Image Orientation in Close-Range Photogrammetry. IAPRS, Vol. 31, Part B5/V, pp. 518-523.
Förstner, W., 1986. A Feature Based Correspondence Algorithm for Image Matching. IAPRS, Vol. 26(3/3), pp. 150-166.
Gianinetto, M., and M. Scaioni, 2003. Fusion of aerial and satellite imagery over the city of Venezia. In Proc. of 2nd GRSS/ISPRS Joint Work. on “Remote Sensing and Data Fusion over Urban Areas”, Berlin, Germany, pp. 216-219.
Goncalves, J.A., and I. Dowman, 2003. Precise Orientation of SPOT Panchromatic Images with Tie Points to a SAR Image. In Proc. of ISPRS-EARSeL Joint Work. on “High Resolution Mapping from Space”, Hannover, on CDROM.
Scaioni M., 1999. A System for Automatic Aerotriangulation: Concept, Implementation and Testing. Ph.D. Thesis, Politecnico di Milano, Italy.