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XVIIIth Congress (Part B3)

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fullscreen: XVIIIth Congress (Part B3)

Multivolume work

Persistent identifier:: 1667435949

Title:: XVIIIth Congress

Sub title:: Vienna, Austria 1996

Year of publication:: 1996

Place of publication:: Vienna

Publisher of the original:: Austrian Society of Surveying and Geoinformation

Identifier (digital):: 1667435949

Language:: English

Editor:: Kraus, Karl; Waldhäusl, Peter

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing

Document type:: Multivolume work

Volume

Persistent identifier:: 1667440764

Title:: XVIIIth Congress

Scope:: 1050 Seiten

Year of publication:: 1996

Place of publication:: Vienna

Publisher of the original:: Austrian Society of Surveying and Geoinformation

Identifier (digital):: 1667440764

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(31,B3)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist anhand des Copyrightjahrs ermittelt.

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Kraus, Karl; Waldhäusl, Peter

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Mathematical Analysis of Data

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Mathematical Analysis of Data

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Mathematical Analysis of Data

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 18., 1996, Wien; International Society for Photogrammetry and Remote Sensing; International Society for Photogrammetry and Remote Sensing, Commission Mathematical Analysis of Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: UPDATE OF ROADS IN GIS FROM AERIAL IMAGERY: VERIFICATION AND MULTI-RESOLUTION EXTRACTION A. Baumgartner, C. Steger, C. Wiedemann, H. Mayer, W. Eckstein, H. Ebner

Document type:: Multivolume work

Structure type:: Chapter

Contents

Table of contents

XVIIIth Congress
XVIIIth Congress (Part B3)
Cover
Title page
ISPRS Council 1992 - 1996
International Archives of Photogrammetry and Remote Sensing (IAPRS)
Volume XXXI, Part B3
Technical Commission III Theory and Algorithms
Editorial Team
Copyright 1996
For Sale after the Congress
ISPRS Commission III "Theory and Algorithms"
PREFACE
Table of Contents
Using Homogeneous Coordinates to Solve The Problems of Determining The Orientation Parameters of Non-Metric Cameras and The Reconstruction of Space Models Mohammed El-Shafei Abdel-Latif and Ahmed M. Elsonbaty
SCALE DIFFERENCE CONSIDERATIONS IN CONJUGATE FEATURE MATCHING Anthony Stefanidis, Peggy Agouris
FROM MANUAL TO AUTOMATIC STEREOPLOTTING: EVALUATION OF DIFFERENT ROAD NETWORK CAPTURE PROCESSES Sylvain AIRAULT, Olivier JAMET, Frédéric LEYMARIE
GEOMETRIC CORRECTION OF AIRBORNE LINE-SCANNER IMAGERY Michael Breuer and Jörg Albertz
COMPRESSION OF REMOTELY SENSED DATA USING JPEG Dafer Ali Algarni
Automatic stereo image matching using edge detection technique Dr. Rehab H. Alwan,Mr. Mohamed A. Naji
DEM Estimation with Simulated Annealing Based on Surface Reconstruction Method Kohei Arai
OUTLIER DETECTION IN RELATIVE ORIENTATION - REMOVING OR ADDING OBSERVATIONS Peter Axelsson
THEMATIC CLASSIFICATION OF A LANDSAT IMAGE USING NEURAL NETWORKS Árpád BARSI
UPDATE OF ROADS IN GIS FROM AERIAL IMAGERY: VERIFICATION AND MULTI-RESOLUTION EXTRACTION A. Baumgartner, C. Steger, C. Wiedemann, H. Mayer, W. Eckstein, H. Ebner
A HIERARCHICAL SPATIAL CANONICAL DATA MODEL - TOWARDS FEDERATING HETEROGENEOUS GISs Yaser A. Bishr, M.Sc. [...]
Detection and extraction of complex map symbols Ruedi Boesch
GENERATION AND USE OF DIGITAL SURFACE MODELS FOR VOLUME OBJECTS Frank Boochs and Guido Heinz
ON CRITICAL CONFIGURATIONS OF PROJECTIVE STEREO CORRELATION Gerhard Brandstätter
RECOGNITION OF HATCHED CARTOGRAPHIC PATTERNS Regine Brügelmann
A COMMON FRAMEWORK FOR THE EXTRACTION OF LINES AND EDGES Andreas Busch
A THINKING COMING AFTER A DYNAMIC MONITORY GIS Hong-Jing Chen, [...] Wen-Li Chen, [...]
SPATIAL RELATIONS BETWEEN SETS Xiaoyong CHEN
SPATIAL RELATIONS BETWEEN UNCERTAIN SETS Xiaoyong CHEN, Takeshi DOIHARA and Mitsuru NASU
RELATIONAL MATCHING FOR AUTOMATIC ORIENTATION Woosug Cho
IMAGE CLASSIFICATION USING NON-PARAMETRIC CLASSIFIERS AND CONTEXTUAL INFORMATION F. J. Cortijo and N. Perez de la Blanca
EXTERIOR ORIENTATION BY DIRECT MEASUREMENT OF CAMERA POSITION AND ATTITUDE J. Skaloud, M. Cramer and K. P. Schwarz
RELATIONAL MATCHING APPLIED TO AUTOMATIC EXTRACTION OF GROUND CONTROL IN DIGITAL IMAGES Aluir Porfirio Dal Poz [...] Antonio Maria Garcia Tommaselli [...] Jorge Pimentel Cintra [...]
A NEW APPROACH FOR SPATIAL MEASUREMENT OF DYNAMICAL PROCESSES Lionel Dorffner
AUTOMATIC REGISTRATION OF IMAGES WITH MAPS USING POLYGONAL FEATURES I J Dowman, A Morgado and V Vohra
AUTOMATIC EXTERIOR ORIENTATION OF AERIAL IMAGES IN URBAN ENVIRONMENTS C. Drewniok, K. Rohr
GPS CONTROLLED STRIP TRIANGULATION USING GEOMETRIC CONSTRAINTS OF MAN-MADE STRUCTURES H. Ebadi and M. A. Chapman
ORIENTATION OF MOMS-02/D2 AND MOMS-2P IMAGERY H. Ebner, T. Ohlhof, E. Putz
SEGMENTATION AND TEXTURE ANALYSIS W. Eckstein
A FRAMEWORK FOR THE ASSESSMENT OF LOCAL SPATIAL UNCERTAINTY USING A POLYGON APPROACH R. C. Allan & G. P. Ellis
VARIANCE DECOMPOSITION AND ITS APPLICATION IN PHOTOGRAMMETRY Mohamed ETTARID, Ph.D.
PRESERVING TOPOGRAPHY IN 3D DATA COMPRESSION FOR SHAPE RECOGNITION Reda Ezzat Fayek
PROMPT - A NEW BUNDLE ADJUSTMENT PROGRAM USING COMBINED PARAMETER ESTIMATION Manfred Fellbaum
IMAGE ORIENTATION EXCLUSIVELY BASED ON FREE-FORM TIE CURVES Gerald Forkert
USING PERCEPTUAL GROUPING FOR ROAD RECOGNITION G. Forlani, E. Malinverni, C. Nardinocchi
EXTERIOR ORIENTATION DETERMINATION OF MOMS-02 THREE-LINE IMAGERY: EXPERIENCES WITH THE AUSTRALIAN TESTFIELD DATA Clive Fraser and Juliang Shao
THREE-DIMENSIONAL GEOGRAPHIC INFORMATION SYSTEMS - STATUS AND PROSPECTS Dieter Fritsch
MODEL-BASED OPTIMIZATION: ACCURATE AND CONSISTENT SITE MODELING P. Fua
SIGNIFICANCE-WEIGHTED FEATURE EXTRACTION FROM HYPER-DIMENSIONAL DATA AND ITS APPLICATIONS Sadao Fujimura and Senya Kiyasu
COMPUTER UNDERSTANDING OF SUB-PIXEL LAND COVERS Jayanta Kumar Ghosh.
THE TOGRAPHY OF ASTEROID IDA: A COMPARISON BETWEEN PHOTOGRAMMETRIC AND TWO-DIMENSIONAL PHOTOCLINOMETRIC IMAGE ANALYSIS B. Giese, J. Oberst, R. Kirk, and W. Zeitler
Multi-spectral Quadtree based Image Segmentation Ben G. H. Gorte
FUSION OF 2D GIS DATA AND AERIAL IMAGES FOR 3D BUILDING RECONSTRUCTION Marko Pasko, Michael Gruber
REQUIREMENTS FOR PHOTOREALISTIC 3D MODELLING OF URBAN AREAS Michael Gruber, Franz Leberl and Markus Maresch
Linear feature extraction with LSB-Snakes from multiple images Armin Gruen, Haihong Li
THREE-DIMENSIONAL REPRESENTATION OF SPATIAL OBJECT AND TOPOLOGICAL RELATIONSHIPS Wei GUO
DEFORMABLE MODELS AS A PHOTOGRAMMETRIC MEASUREMENT TOOL - POTENTIAL AND PROBLEMS Eberhard Gülch
FUSION OF 2D-GIS AND IMAGE DATA FOR 3D BUILDING RECONSTRUCTION Norbert Haala and Karl-Heinrich Anders
SEMI-AUTOMATIC MEASUREMENT OF SIGNALIZED GROUND CONTROL POINTS AT DIGITAL PHOTOGRAMMETRIC WORKSTATIONS Michael Hahn, Michael Kiefner, Antje Quednau and Esther Hinz
AUTOMATION OF INTERIOR, RELATIVE AND ABSOLUTE ORIENTATION Christian Heipke
Detection of Lines in Synthetic Aperture Radar (SAR) Scenes Olaf Hellwich, Helmut Mayer and Gerhard Winkler
PROJECT AMOBE: STRATEGIES, CURRENT STATUS AND FUTURE WORK Olof Henricsson, Frank Bignone, Wolfram Willuhn, Frank Ade, Olaf Kübler, Emmanuel Baltsavias, Scott Mason, Armin Grün
ORTHO-MOSAICS AND DIGITAL ELEVATION MODELS FROM AIRBORNE VIDEO IMAGERY USING PARALLEL GLOBAL OBJECT RECONSTRUCTION Mikael Holm, George Denissoff, Kaj Juslin, Matti Paljakka, Markku Rantasuo, Susanna Rautakorpi
AUTOMATIC TIE POINT EXTRACTION IN AERIAL TRIANGULATION Eija Honkavaara and Anton Hogholen
ON THE TECHNIQUE FOR TERRAIN ROUGHNESS DETERMINATION lon Ionescu
OEEPE RESEARCH PROJECT AEROTRIANGULATION USING DIGITIZED IMAGES FINAL RESULTS Juha Jaakkola and Tapani Sarjakoski
A New Approach of Combined Block Adjustment Using GPS-Satellite Constellation Jacobsen, Karsten, [...] Schmitz, Martin, [...]
SEGMENTATION OF REMOTE SENSING IMAGES WITH A LAYERED GRAPH NETWORK Herbert Jahn
EXTRACTION AUTOMATIQUE D’OBJETS SUR STATIONS PHOTOGRAMMETRIQUES NUMERIQUES (Automated Feature Extraction on Digital Photogrammetric Systems) Olivier JAMET
AIRBORNE GPS K. Jeyapalan
Capture and evaluation of airborne laser scanner data Johannes Kilian, Norbert Haala and Markus Englich
SHAPE DISCRIMINATION BY DESCRIPTORS AND MOMENTS USING NEURAL NETWORK Kyoung-Ok Kim, Young-Kyu Yang, Yong-Hui Park, Tae-Kyun Kim
Advanced Combined Bundle Block Adjustment with Kinematic GPS Data Dr. Erwin Kruck [...] & dr. Gerhard Wübbena, Andreas Bagge [...]
DO IT ON THE GROUND: INCREASING RELIABILITY AND ACCURACY OF AUTOMATIC AEROTRIANGULATION BY MATCHING IN THE OBJECT SPACE Amnon Krupnik
An Integral Approach to Automatic Aerial Triangulation and Automatic DEM Generation Krzystek P., Heuchel T., Hirt U., Petran, F.
3D-CITY MODELING WITH A DIGITAL ONE-EYE STEREO SYSTEM Felicitas Lang, Wolfgang Förstner
SURFACE RECONSTRUCTION F. Leberl, M. Gruber, W. Kellerer-Pirklbauer, A. Pinz, P. Uray
SYSTEMATIC CORRECTION MECHANISM OF GEOMETRIC DISTORTIONS IN THE KITSAT-1 CCD EARTH IMAGES Impyeong Lee [...], Taejung Kim [...], Soon D. Choi [...]
A SURVEY ON BOUNDARY DELINEATION METHODS Mathias J. P. M. Lemmens
Relational Structure Description and Matching Algorithm for 3D Objects Deren Li [...] Xinhua Wang [...]
OPTIMAL ACQUISITION OF 3D OBJECT COORDINATES FROM STEREOSCOPIC IMAGE SEQUENCES Rongxing Li, Mike A. Chapman, and Weihong Zou
TRANSFORMATION OF SPATIAL REPRESENTATION IN SCALE DIMENSION: A NEW PARADIGM FOR DIGITAL GENERALIZATION OF SPATIAL DATA Dr. Zhilin Li
GIS FOR THE NEXT CENTURY Ales Limpouch
APPLICATION OF RANDOM DECISION RULES IN LASER LOCATOR IMAGE OPTIMAL SEGMENTATION ALGORITHMS V. M. Lisitsyn. N. N. Pasechny. V. A. Stefanov, V. P. Samoilov, D. A. Lukanidin
THE POSITION AND ORIENTATION SYSTEM (POS) FOR SURVEY APPLICATIONS Erik Lithopoulos, Dr. Blake Reid, Dr. Bruno Scherzinger
LINEAR FEATURES EXTRACTION BY STRING MATCHING FOR AUTOMATIC DEM GENERATION King-Chang Lo
TOWARDS A HIGHER LEVEL OF AUTOMATION FOR SoftPlotter™ Yan Lue, Senior Photogrammetric Engineer
Automatic DEM generation by multi-image feature based matching Hans-Gerd Maas
DIGITAL AERIAL TRIANGULATION - THE OPERATIONAL COMPARISON Mostafa Madani, Ph.D.
PROCESSING OF PROTRUDING OBJECTS IN DIGITAL IMAGES OF URBAN AREAS Borislav D. Marinov
EQUIVALENT MAPS FOR AREAL ELEMENTS OF ENVIRONMENT? Zbynek MARSIK, Prof. Ing. DrSc
THE USE OF GRAVITY FOR GIS DATA SETS OPTIMIZATION. I. A. Maslov. [...]
3D BUILDING RECONSTRUCTION USING COMPOSITES OF SURFACE PRIMITIVES: CONCEPT Scott Mason
ABSTRACTION AND SCALE-SPACE EVENTS IN IMAGE UNDERSTANDING Helmut Mayer
BUNDLE ADJUSTMENT WITH GEOMETRIC CONSTRAINTS FOR HYPOTHESIS EVALUATION Chris McGlone
FEATURE-BASED PHOTOGRAMMETRIC AND INVARIANCE TECHNIQUES FOR OBJECT RECONSTRUCTION H. F. Barakat, K. Weerawong, and Edward M. Mikhail, [...]
MULTI-SCALE APPROACHES FOR GEODATA Martien Molenaar
ACCURACY IMPROVEMENT IN AUTOMATED SURFACE MEASUREMENT Mushairry Mustaffar
CONJUGATE POINTS IN THE ORIENTATION OF ACROSS AND ALONG TRACK STEREOMODELS FRANCELINA A. NETO
MATCHING IN 2-D AND 3-D R. Nevatia
Recovering Unknown Focal Lengths in Self-Calibration: An Essentially Linear Algorithm and Degenerate Configurations G. N. Newsam, D. Q. Huynh, M. J. Brooks, H.-P. Pan
ORTHOGONAL 3-D RECONSTRUCTION USING VIDEO IMAGES Ilkka Niini
The Leica system for orientation of linear array sensor imagery Azubuike G. Nwosu and Alfons Meid
EXPERIENCES WITH THE HELAVA AUTOMATED TRIANGULATION SYSTEM Thomas Kersten, William O’ Sullivan
LOCAL, REGIONAL AND GLOBAL POINT DETERMINATION USING THREE-LINE IMAGERY AND ORBITAL CONSTRAINTS Timm Ohlhof
Orientation and Free Network Theory of Satellite CCD Line-Scanner Imagery Atsushi Okamoto, [...] Susumu Hattori, [...] Hiroyuki Hasegawa, [...] Tetsu Ono, [...]
Fundamental Analytic of Satellite CCD Camera Imagery Using Affine Transformation Tetsu Ono, [...] Atsushi Okamoto, [...] Susumu Hattori, [...] Hiroyuki Hasegawa, [...]
SURFACE BASED OBJECT RECOGNITION AND INSPECTION BY PHOTOMETRICALLY EXTENDED BUNDLE ADJUSTMENT TECHNIQUE A. B ORUN, Researcher [...] Prof. Dr. A. ALKIS [...]
UNIFORM FULL-INFORMATION IMAGE MATCHING USING COMPLEX CONJUGATE WAVELET PYRAMIDS He-Ping Pan
Basis of the Orthoimage Generation Method Zygmunt Paszotta, Renata Jedryczka
AUTOMATED MEASUREMENT OF GROUND CONTROL OBJECTS IN LARGE SCALE AERIAL PHOTOGRAPHS Bjarke Moller Pedersen
Surface Models on the Basis of a Triangular Mesh - Surface Reconstruction Norbert Pfeifer [...] Helmut Pottmann [...]
DTM REFINEMENT USING MULTI IMAGE SHAPE FROM SHADING C. Piechullek, C. Heipke
CURVE SHAPE MATCHING AND DIFFERENCE DETECTION Jarmo Pirhonen
Rectangular Building 3D Reconstruction in Urban Zones Thierry QUIGUER
COLOUR AERIAL IMAGE SEGMENTATION USING A BAYESIAN HOMOGENEITY PREDICATE AND MAP KNOWLEDGE F. Quint, S. Landes
EVALUATING MODEL FIDELITY IN AN AERIAL IMAGE ANALYSIS SYSTEM F. Quint, M. Sties
CONTROLLING AERIAL PHOTOGRAPHY FROM TOPGRAPHIC MAPPING USING A MULTI-SENSOR BUNDLE ADJUSTMENT Michael Reading, James Carswell, Phil Kern, [...]
MAP SYMBOL RECOGNITION USING DIRECTED HAUSDORFF DISTANCE AND A NEURAL NETWORK CLASSIFIER Eric Reiher, Fady Said, Ying Li, and Ching Suen
STEREO PROCESSING WITH ATTITUDE-DISTURBED IMAGE DATA Anko Börner, Ralf Reulke, Martin Scheele, Thomas Terzibaschian
THREE DIMENSIONAL OBJECT RECONSTRUCTION BY OBJECT SPACE MATCHING Franz Rottensteiner
AUTOMATIC DIGITAL TERRAIN MODEL GENERATION USING AERIAL IMAGES AND MAPS. Michel Roux, Jaime Lopez-Krahe, Henri Maître
AN IMAGE MATCHING SCHEME USING A HYBRID FEATURE- AND AREA BASED APPROACH Nick van der Merwe and Heinz Rüther
SEMANTIC MODELS AND OBJECT RECOGNITION IN COMPUTER VISION G. Sagerer, F. Kummert, G. Socher
LEAST SQUARES MATCHING BY SEARCH Tapani Sarjakoski and Jussi Lammi
ON THE USE OF MODERN GPS RECEIVER AND SOFTWARE TECHNOLOGY FOR PHOTOGRAMMETRIC APPLICATIONS Holger Schade
DIGITAL AERIAL TRIANGULATION Toni Schenk
THE AUTOMATIC INTERIOR ORIENTATION AND ITS DAILY USE Wolfgang Schickler, Zoltan Poth
Satellite Image Analysis using Integrated Knowledge Processing K.-J. Schilling and T. Vögtle
HIGH RESOLUTION SURFACE RECONSTRUCTION OF A LANDSCAPE FROM LARGE SCALE AERIAL IMAGERY BY FACETS STEREO VISION - AN EXTENDED TEST M. Schlüter and B. P. Wrobel
REMOTE SENSING IMAGE UNDERSTANDING BASED ON PHYSICAL MODEL INVERSION Werner Schneider
RESULTS OF THE TEST ON IMAGE UNDERSTANDING OF ISPRS WORKING GROUP III/3 Monika Sester, Werner Schneider and Dieter Fritsch
KINEMATIC MULTI-SENSOR SYSTEMS FOR CLOSE RANGE DIGITAL IMAGING K. P. Schwarz and N. El-Sheimy
OBJECT RECONSTRUCTION WITHOUT INTERIOR ORIENTATION J. Shan
TERRAIN MORPHOLOGY MODELLING Massoud Sharif, Alfred Zinck
SCANNER RESECTION USING TRAJECTORY DATA Fergal Shevlin
SPATIO-TEMPORAL INTERPOLATION OF CLASS VARIABLES BY INTEGRATING OBSERVATIONAL DATA AND A BEHAVIORAL MODEL WITH GENETIC ALGORITHM(GA) Shaobo HUANG and Ryosuke SHIBASAKI
ADAPTIVE RECONSTRUCTION METHOD OF MULTISPECTRAL IMAGES Michal Haindl [...] Stanislava Simberová [...]
ADVANCES IN GPS-ASSISTED HELICOPTER PHOTOGRAMMETRY AND ITS APPLICATION TO HIGH PRECISION HIGHWAY PROFILING Martin J Smith and Chris I H Joy
EXTRACTING LINES USING DIFFERENTIAL GEOMETRY AND GAUSSIAN SMOOTHING Carsten Steger
SEGMENTATION OF OPTICAL SATELLITE IMAGERY USING SPATIAL SUBPIXEL ANALYSIS Joachim Steinwendner
STRUCTURAL 3D-ANALYSIS OF URBAN SCENES FROM AERIAL IMAGES U. Stilla, K. Jurkiewicz
A NEW METHOD OF BUILDING GIS APPLICATION MODEL BASED ON GRAPHICAL VARIABLES Zhu Zesheng, Sun Ling
AUTOMATIC RELATIVE ORIENTATION - REALIZATION AND OPERATIONAL TESTS Liang Tang and Zoltan Poth [...] Timm Ohlhof, Christian Heipke and Joachim Batscheider [...]
COUPLING GIS AND ENVIRONMENTAL MODELLING: THE IMPLICATIONS FOR SPATIO-TEMPORAL DATA MODELLING Cheng Tao, Wolfgang Kainz, Robert A. van Zuidam
AN INTEGRATED APPROACH TO ROAD CENTERLINE RECONSTRUCTION USING STEREO IMAGE SEQUENCES FROM A MOBILE MAPPING SYSTEM Chuang Tao
EXTRACTING HIGH RESOLUTION DIGITAL ELEVATION MODELS AND FEATURES IN A SOFTCOPY ENVIRONMENT Charles K. Toth and Andre Templer
KNOWLEDGE BASED MODELLING OF LANDSCAPES Ralf Tönjes
EXTRACTION OF MAN-MADE FEATURES BY 3-D ACTIVE CONTOUR MODELS John C. Trinder [...] Haihong Li [...]
ORIENTING DIGITAL STEREOPAIRS BY MATCHING FOURIER DESCRIPTORS Yi-Hsing Tseng
AN EDGE DETECTOR BASED ON WIDE-NARROW MORPHOLOGICAL OPERATIONS OF SATELLITE REMOTE SENSING IMAGES Makoto KAWAMURA, [...] Yuji TSUJIKO, [...] Sanath JAYAMANNA, [...]
SPATIAL CADASTRAL BOUNDARY CONCEPTS AND UNCERTAINTY IN PARCEL-BASED INFORMATION SYSTEM A M Tuladhar
AN AUTOMATED DIGITAL APPROACH FOR THE GENERATION OF DIGITAL TERRAIN MODELS USING HRSC AND WAOSS IMAGE DATA OF THE MARS96 MISSION Robert Uebbing
EVENTS-BASED IMAGE ANALYSIS FOR MACHINE VISION AND DIGITAL PHOTOGRAMMETRY Yury V. Visilter, Sergei Yu. Zheltov, Alexander A. Stepanov
AUTOMATIC EXTRACTION OF LARGE BUILDINGS FROM HIGH RESOLUTION SATELLITE IMAGES FOR REGISTRATION WITH A MAP V K Vohra and I J Dowman
UNCERTAINTY IN GIS SUPPORTED ROAD EXTRACTION George Vosselman
Structural Matching and Its Applications for Photogrammetric Automation Dr. Younian Wang
AN APPROACH TO BUILDING EXTRACTION FROM DIGITAL SURFACE MODELS U. Weidner
Ladex: A New Index Mechanism in Spatial Object Database System Xiao Weiqi, Feng Yucai
DETERMINATION OF CONJUGATE POINTS OF STEREOSCOPIC THREE LINE SCANNER DATA OF MARS 96 MISSION Franz Wewel
A NEW MATCHING APPROACH FOR THREE-LINE SCANNER IMAGERY C. Wiedemann, L. Tang, T. Ohlhof
AUTOMATIC BREAKLINE DETECTION USING AN EDGE PRESERVING FILTER Dietmar Wild, Peter Krzystek [...] Mostafa Madani [...]
FINDING 3D-STRUCTURES IN MULTIPLE AERIAL IMAGES USING LINES AND REGIONS Hakan Wiman, Peter Axelsson
FACETS STEREO VISION (FAST VISION) APPLIED TO DIGITAL COLOUR IMAGES B. Kaiser, B. P. Wrobel
EIN ANSATZ ZUR VEGETATIONSERKENNUNG AUS LUFTBILDERN MIT HILFE VON MARKOV-ZUFALLSFELDERN IN VERBINDUNG MIT DER OBERFLÄCHENREKONSTRUKTION B. Wrobel, A. Krauth, [...]
WAVELETS BASED OBJECT SURFACE RECONSTRUCTION BY FAST VISION Jaan-Rong Tsay, Bernhard P. Wrobel [...] Reinhold Schneider [...]
MULTI-POINT LEAST SQUARES MATCHING WITH ARRAY RELAXATION UNDER VARIABLE WEIGHT MODELS Xiaoliang Wu
Automatic Point Transfer: a practical application of optimal digital image matching based on local invariant properties X. Xu, ZG. Tan
DECISION TREE CLASSIFIER WITH UNDETERMINED NODES Masanobu Yoshikawa, Sadao Fujimura, Shojiro Tanaka, and Ryuei Nishii
Estimation of a Rriori Probabilities of Landcover Categories for Bayes' Classifier Kunihiko Yoshino, Keiji Kushida
MULTISCALE APPROACH TO IMAGE TEXTURE Zhang Jixian
METHODS OF THE BUNDLE BLOCK ADJUSTMENT OF PLANETARY IMAGE DATA W. Zhang, B. Giese, J. Oberst, R. Jaumann
A Hierarchical Neural Network Approach to Three-Dimensional Object Recognition Yongsheng Zhang
Recognizing Primitives Using Aspect-Interpretation Model Matching in A Both CAD and LP-based Measurement System Zhou Guoging
DE-SHADING: INTEGRATED APPROACH TO PHOTOMETRIC MODEL, SURFACE SHAPE AND REFLECTANCE PROPERTIES Xiuguang Zhou, Egon Dorrer
REMOTE SENSING IMAGE TEXTURE ANALYSIS AND CLASSIFICATION WITH WAVELET TRANSFORM Changqing Zhu
Appendix: Authors and Co-authors Index Volume XXXI, Part B3 - ISPRS Commission lll
Appendix: Keywords Index Volume XXXI, Part B3 - ISPRS Commission lll
Title page
Cover

Full text

2 VERIFICATION
Verification of GIS data means to find the parts of the data which
have not changed. One way is to compare the results of an auto-
matic road finder with the given data. But this is disadvantageous
because the given data is not used to guide the road extraction and
the matching is computationally expensive. A way to check the
data which avoids this is to compare the data "directly" with the
image data. This has the following advantages: The area to be
investigated is known; there is highly reliable information about
the spatial position and, what is more, about the topology of the
roads because most of the roads normally are unchanged. Using
this information, it is possible to close gaps if they are enclosed
by verified sections. By and large, there is a good chance to verify
roads using a simple model. This section presents an approach
for the verification of GIS data using high resolution image data
(pixel size 10—50 cm) and simulated GIS data representing the
axes of the roads.
2.1 Model and Fundamental Idea
The proposed approach is based on a simple model which com-
prises two fundamental assumptions about the appearance of roads
in aerial imagery: (1) Roads have mostly straight and parallel
roadsides. This means that if a road in the image corresponds
to an axis of the GIS data both roadsides will be approximately
parallel to the axis. (2) Roadsides correspond to strong edges in
the image and the gray values along a road axis are expected to
be more or less constant.
The fundamental idea of the approach is that both roadsides
are close to an axis if the GIS data corresponds to a road in the
image. Therefore, the first step consists in searching for the two
strongest edges at both sides of the axis. This is done with loose
constraints. For that reason some edges which are no roadsides
will be detected. If the axis corresponds to the road the number
of these false detections will be relatively small, otherwise many
randomly distributed edges which are no roadsides will be found.
The decision whether the axis corresponds to the road in the
image is made in the second step using the following criteria:
Straightness, parallelism of the extracted edges, and homogeneity
of the gray values within the expected road.
2.2 Verification procedure
2.2.1 Edge Detection To find the two strongest edges a gradi-
ent image using the modified Deriche edge operator (Lanser and
Eckstein, 1992) is computed. This operator yields good detection
quality, accurate location, few multiple responses, and isotropic
response. Along each axis points with constant distance to each
other are calculated. At these points relatively wide, symmet-
ric profiles are taken from the gradient image perpendicular to the
axis similar to (McKeown Jr. and Denlinger, 1988). The positions
of the two strongest edges within each profile are determined. The
only constraint on the position of the two edge points within the
profile is a minimum distance to each other. In Figure 1a) the
detected edge points are shown as black points superimposed on
the test image (cf. Fig. 3 for the corresponding GIS axes). There
are a lot of outliers due to disturbances near the road.
2.2.2 Width Estimation Because of the outliers in the edge
detection it is important to estimate the actual width of the road.
The center of the two edges and the distance of the center to the
old axis is calculated for each profile. If this distance is less than
a certain threshold (depending on the given level of accuracy),
the two edge points are labeled as roadsides. The longest sections
where the edge points are labeled as roadsides are computed using
the imperfect sequence detector (ISD) described by (Aviad and
54
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B3. Vienna 1996
Carnine Jr, 1988). For these sections the mean road width is
estimated. After adapting the width of the profiles to the road
width, the search for the two strongest edges is repeated for each
profile. By this means, disturbing edges further away from the
road are eliminated. In Figure 1b) the result after the estimation
of the road width is shown. The benefits of this step can be seen
especially at the curved road in the upper part of the image. In
Figure 1a) (before the estimation of the road width) the edge points
are widely spread, while in Figure 1b) (after the estimation of the
road width) most of the edge points correspond to roadsides.
2.2.3 Evaluation of the GIS Axes Two kinds of errors can
occur when labeling edge pairs: An error of the first kind is
committed if an edge pair is labeled as not corresponding to the
roadsides, although both edge points correspond to them. An
error of the second kind is committed if the edge pair is labeled
as corresponding to the roadsides although this is not the case.
These errors cannot be detected for each edge pair individually.
Therefore, the continuity of extracted edge points is checked along
the direction of the axis.
A frequent reason for an error of the first kind is a slightly
inaccurate position of the axis. This leads to a constant bias of the
GIS axis and the center point of both edges. Therefore, the edge
pair will be labeled as not corresponding to the roadsides. This
error typically occurs for many successive edge pairs. To detect
this kind of error, the string of centers is checked for straightness
along the GIS axis. Each point and its two neighboring points
are connected by two vectors. The criteria for "straightness" are
that the angle between the two vectors, as well as the difference
between the mean direction of the two vectors and the direction
of the GIS axis are small. First, all center points are labeled
individually. Then itis checked if a gap in the string of edge points
preliminary labeled as roadsides can be closed by a continuous
string of center points labeled as straight. If this is the case, the
corresponding edge points are labeled as roadsides as well.
The errors of the second kind are detected by checking all edge
pairs which are labeled as roadsides. This is based on measures for
straightness, parallelism, and homogeneity. Typically roadsides
are straight. Therefore, all edge points which are colinear with
their neighbors are assumed to be faultless, all others to be faulty.
A measure is computed for each roadside separately. To check the
edges for parallelism the direction of the edge points is taken from
the direction image calculated with the Deriche edge operator as
well. A measure for parallelism of the two edge points within
each profile is derived by comparing their directions. It is not
advisable to assume homogeneity of the gray values for the whole
road as there are too many disturbances, like cars or shadows.
However, a great part of the road is homogeneous. What is
more, an area depicting no road will often be distinguished by
inhomogeneous gray values. The gray values of the center points
are accumulated into a coarse histogram. A homogeneity measure
is derived by an investigation of this histogram. The highest
relative frequency will mostly be higher for roads than for other
areas. Furthermore, the number of histogram sections with more
than a certain frequency will be less for roads.
Finally all derived measures are combined to decide whether
an GIS axis can be verified or not.
2.2.4 Handling of Inaccurate Axes At some places GIS axes
don’t coincide accurately with the road axes in the image. Some
parts of a GIS axis lie within the road, whereas other parts do
not. Typically, there is a skip in the position of the edge points
at the intersection of the GIS axis with the roadside. The edge
which is intersected by the axis will be detected continuously,
whereas the corresponding roadside will only be detected if the
axis lies between the two roadsides (cf. Fig. 2). A good hint for

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Kraus, Karl, and Peter Waldhäusl. XVIIIth Congress. Austrian Society of Surveying and Geoinformation, 1996.

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