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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:: IMAGE CLASSIFICATION USING NON-PARAMETRIC CLASSIFIERS AND CONTEXTUAL INFORMATION F. J. Cortijo and N. Perez de la Blanca

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

IMAGE CLASSIFICATION USING NON-PARAMETRIC
CLASSIFIERS AND CONTEXTUAL INFORMATION *
F.J. Cortijo and N. Perez de la Blanca
Depto. Ciencias de la Computación e I. A. (DECSAI)
E.T.S. Ingeniería Informática
Universidad de Granada
18071 Granada, Spain
cb@robinson.ugr.es
Commision Ill, Working Group 2
KEY WORDS: Classification, Learning, Algorithms, Combination, Accuracy, Pattern Recognition, Contextual Classification
ABSTRACT
This paper shows some combinations of classifiers that achieve high accuracy classifications. Traditionally it is used the
maximum likelihood classification as the initial classification for the contextual correction. We will show that using non-
parametric spectral classifiers to obtain the initial classification we can improve the accuracy of the classification significatively
with a reasonable computational cost. More specifically we propose to apply the contextual correction performed by the ICM
algorithm to some non-parametric spectral classifications.
1 INTRODUCTION
Supervised classifiers assume the existence of a training set
T composed by n labeled training samples, where the labels
represent informational classes (labels). This information is
used for learning -construction of the classifier- and usually
for testing too. We will note by Q = {w1,w2,...,ws} to the
set of informational classes and by X to the samples used for
learning and classifying. We assume they are d-dimensional
random variables.
Spectral classifiers use only the spectral information related
to the pixel to be classified. The thematic map they give as
output has the overall impression of a “noisy” classification.
This effect is more evident when there is overlapping among
the training sets in the spectral space [Cortijo et al., 1995].
In this case it is necessary a post-processing over the initial
classification because it is expected to find homogeneous re-
gions in the map as they can be found in the Nature. The
straightforward solution consists in incorporating additional
information into the classifier related to the spatial neighbor-
hood -its context- of the pixel to classify. That information
may be the spectral values of the spatial-neighbors pixels,
their labels or both kinds of information combined in some
way. When this kind of information is used for classification
the classifier is known as a contextual classifier.
From a general point of view a contextual classifier can be
seen as a smoothing process over an initial image of labels.
This map is obtained usually by a spectral classifier. lt is
well known that some contextual classifiers achieve a local
optimum [Besag, 1986] determined by the initial classifica-
tion. It is used traditionally the maximum likelihood (ML)
classification as the starting point for the smoothing process.
We have shown [Cortijo & Pérez de la Blanca, 1996a] that
the ML classifier is not the best choice when the training
sets are high-overlapped. In this work we propose the use of
different spectral classifications as initial classifications to a
contextual classifier in order to obtain high-accuracy classi-
fications with a reasonable computational cost.
In order to achieve a higher accuracy it looks reasonable to

*This work has been supported by the Spanish "Dirección General de
Ciencia y Tecnologia” (DGCYT) under grant PB-92-0925-C02-01
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B3. Vienna 1996
adopt a high accuracy spectral classification as starting point
to the contextual classifier, given that contextual classifiers
assure convergence to a local maximum. Our proposal con-
sists in adopting different spectral classifications as starting
points with the aim of improving the accuracy of the conven-
tional methodology consisting in contextually correcting the
ML classification. Many others spectral classifiers improve
significatively the results obtained by the ML classifier and
the classifications obtained by them are good candidates to
be the initial classifications for contextual classifiers. Finally,
we must considere the required computational effort to per-
form the global process: spectral classification followed by
the contextual classification. For a particular contextual clas-
sifier it is obvious that the contextual classification effort is
the same for any initial classification, thus the global com-
putational effort is determined by the spectral classification
computing demands.
This paper is organized as follows: In section 2 we describe
the methodology we have adopted in this work together with
a brief description of the classifiers we have used. In section 3
we describe the datasets used in this paper and in section 4
we show the results obtained. Finally, the main conclusions
we have achieved are summarized in section 5.
2 METHODOLOGY
Our objective in this work is to show some combinations of
classifiers that achieve high-accuracy classifications. In order
to determine some interesting combinations of classifiers for
Remote Sensing image classification we have tested a wide
number of families of spectral and contextual classifiers.
2.1 Spectral Classifiers
Spectral classifiers are partitioned in two main categories:
a) parametric classifiers, if they assume the existence of an
underlying probability distribution of the data and b) non-
parametric classifiers, if they do not assume anything about
the probability distribution.
The structure of the Bayes classifier is determined, basically,
by the probability density functions (pdf's) p(X|wi). The
objective in the construction of a supervised parametric clas-
sification rule is to characterize the pattern of each class in
120

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

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