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International cooperation and technology transfer

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fullscreen: International cooperation and technology transfer

Monograph

Persistent identifier:: 856489328

Author:: Mussio, Luigi

Title:: International cooperation and technology transfer

Sub title:: Parma, Italy, February 15 - 19, 1999, Bandung, Indonesia, April 13 - 14, 1999, Cotonou, Benin, December 6 - 10, 1999 ; proceedings of the workshops

Scope:: XXX, 398 Seiten

Year of publication:: 1999

Place of publication:: London

Publisher of the original:: RICS Books

Identifier (digital):: 856489328

Illustration:: Illustrationen, Diagramme

Language:: English

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

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: AUTOMATIC DEM GENERATION IN QUARRIES. Gianfranco FORLANI, Livio PINTO.

Document type:: Monograph

Structure type:: Chapter

International cooperation and technology transfer
Cover
ColorChart
Title page
FOREWORD.
Table of Contents.
Compte-rendu of the WG VI/3. Mariano Cunietti Memorial Meeting in Parma. Mojca Kosmatin Fras, WG VI/3 Co - chairperson.
Compte - Rendu of the ISPRS WG VI/3. High Level Tutorial in Bandung. Fahmi Amhar, Tutorial Chairperson.
Compte-rendu of the Wg VI/3. Luigi Solaini 10th Anniversary. Memorial Meeting in Cotonou. Luigi Mussio, WG VI/3 Chairperson.
Opening.
Closure.
Welcome addresses.
Opening.
Closure.
PADUA, BAHIA BLANCA, PERUGIA, PARMA, BANDUNG AND COTONOU, MEETING - LIST OF PARTICIPANTS.
ISPRS WG VI/3 - LIST OF CORRESPONDENTS.
VIRTUAL REALITY (VR) APPLIED TO ENVIRONMENT REPRESENTATIONS: SOME EXAMPLES AT UNIVERSITY OF PADUA (ITALY). V. Achilli, F. Barison, A. Vettore.
SURVEYING METHODOLOGIES IN THE PHLEGREAN VOLCANIC DISTRICT (NAPLES - ITALY). Achilli V., Borgstrom S., Capone M., Del Gaudio C., De Martino P., Klees R., Ricciardi G. P., Ricco C., Sepe V., Usai S., Vettore A.
Integration of GPS and Conventional Surveying For Positioning of The Mobile Phone Antennae in A Local System. Al-Bayari O., Barbarella M., Fazio C..
The Spacewise Approach to the Data Treatment for the SAGE Mission Project. A. Albertella, F. Migliaccio, F. Sansó.
DATA AND METADATA A NEW CONCEPT IN ARCHIVING ARCHITECTURAL DATA. Elena ALBERY, Fulvio RINAUDO.
NOTES ABOUT TOPOGRAPHIC AND PHOTOGRAMMETRIC SURVEYING FOR THE INVESTIGATION OF THE DOME BEARING VERTICAL WALLS IN S. MARIA DEL FIORE CATHEDRAL OF FLORENCE. P. Aminti, I. Chiaverini, D. Ostuni.
NEW SURVEY OF MORIMONDO ABBEY. Bruno Astori, Luca Rinaldi, Grazia Tucci.
SARNO (ITALY) LANDSLIDES: DIFFERENT METHODOLOGIES OF DATA ACQUISITION. M. Barbarella, M. Fiani.
DIGITAL PHOTOGRAMMETRY AND LASER RANGE CAMERA FOR PHYSIC MODEL GEOMETRY DETERMINATION. M. Barbarella, A. Vettore.
SAMPLING AND VARIANCE ANALYSIS IN REGGIO CALABRIA. Vincenzo Barrile and Rossella Nocera.
GEOID ESTIMATION THROUGH GPS OBSERVATIONS. R. Barzaghi, A. Borghi.
DATA PROCESSING VERSUS GEOMATICS. T. Bellone, L. Mussio, C. Nardinocchi.
PERTINENCE DE L'OFFRE DE FORMATION DU GDTA A' L'INTERNATIONAL. Jean-Luc BESSIS.
THE ARCHITECTURAL AND ARCHAEOLOGICAL PHOTOGRAMMETRICAL EXPERIENCES IN GREECE AND MIDDLE ASIA. Giorgio Bezoari.
PROCEDURES OPTIMISATION IN THE QUALITY SYSTEM. G. Bezoari, F. Guzzetti.
CARTOGRAPHY FOR TOWN PLANNING. Giorgio Bezoari, Attilio Selvini.
INDEXING TREE METHODS AND SPATIAL ORDERING FOR MAPS AND GEOGRAPHIC DATA: AN OVERVIEW AND APPLICATION TO THE GEODETIC GIS PROJECT. L. Biagi, M. A. Brovelli, M. Negretti and C. Saldarini.
GIS/WEB DESIGN FOR INTERNET/INTRANET DATA SHARING. Piero BOCCARDO, Giuliano COMOGLIO, Nadia CORGIAT LOIA.
SURFACE SPATIAL ANALYSIS IN ARCHITECTURAL AND ARCHAEOLOGICAL SURVEY: DIGITAL AND ANALYTICAL PROCEDURES. Raffaella BOLOGNA, Maurizio MINCHILLI.
VERY LARGE SCALE MAPPING OF THE ARCHAEOLOGICAL SITE IN CERVETERI (ITALY): DATA COLLECTION FROM DIGITAL AUTOMATIC D.T.M., ORTHOPROJECTION AND ANALYTICAL STEREOPLOTTING. Raffaella BOLOGNA, Maurizio MINCHILLI.
DES COMPOSANTS LOGICIELS GEOGRAPHIQUES POUR ELARGIR ET DEMOCRATISER L'ACCES A LA TECHNOLOGIE ETA L’INFORMATION GEOGRAPHIQUE. SPATIAL SOFTWARE COMPONENTS FOR WIDENING AND DEMOCRATIZING ACCESS TO GEOGRAPHIC INFORMATION AND TECHNOLOGY. Patrice BOURSIER, Michel EBOUEYA, Arunas STOCKUS, Alain BOUJU, Frédéric BERTRAND.
VALIDATION OF AN ANCIENT PERSPECTIVE IN LECCO (ITALY). PIETRO BROGLIA, EVA SAVINA MALINVERNI, LUIGI MUSSIO.
THE USE OF SPATIAL-ORIENTED DATA BASE MANAGEMENT SYSTEMS (DBMS) FOR ITALGEO GEOID MANAGEMENT BY GIS. M. A. Brovelli, F. Migliaccio and V. Tornatore.
COMPARISON BETWEEN PHOTOGRAMMETRICAL SURVEYS OF THE ST.STEFANO CHURCH'S CLOISTER IN BOLOGNA AND METRICS EVALUATIONS OF THE OPERATIONS OF RESTORATION. A. Capra, S. Gandolfi, G. Lombardi, A. Zanutta.
EXPERIMENTAL TESTS IN DIGITAL IMAGES PLOTTING. M. Caprioli, P. De Fazio.
GVM - GAC PROCESSING CHAIN : A REMOTE SENSING TOOL FOR ENVIRONMENTAL APPLICATIONS AT CONTINENTAL LEVEL. C. Carmona-Moreno, M. Turchini, M. F. Cruz Martinez, J. Baron, J. Lopez Raya José, A. Moreno Ruiz.
INTERNATIONAL COOPERATION AND TECHNOLOGY TRANSFER GAIA: global astrometry from space at 10 [...] level. D. Cardio, B. Bucciarelli, M. Gai, M. G. Lattanzi and S. Cesare.
ESTABLISHMENT OF A LEVELLING NETWORK FOR THE MONITORING OF POSSIBLE VERTICAL MOVEMENTS IN THE AREA OF PISA - SAN GIULIANO TERME PONTASSERCHIO-MIGLIARINO PISANO (ITALY). G. Caroti, E. Mengali, A. Rossi, C. Scalese.
ESTIMATING MEASUREMENT PRECISION BY MEANS OF MEASUREMENT DIFFERENCES. V. Casella.
AUTOMATIC FOREST AREA RECOGNITION USING GIS IMAGE ANALYSIS CAPABILITY. Marco Ciolli, Paolo Zatelli.
NEW APPROACH TO THE ESTIMATION OF SNOWPACK ESTENSION VIA REMOTE SENSING. Alessandra Colombo, Giovanmaria Leoni.
CULTURAL HERITAGE WEB SITES: THE SUPPORT OF GEOMATICS. Luigi Colombo.
A METHOD FOR ESTIMATING 3D SHAPES MOTION BY A FREQUENCY DOMAIN TECHNIQUE. G. M. Cortelazzo, A. Guamieri, A. Vettore.
LA FORMATION AU C.R.T.O. A. Coulibaly.
A COMPUTER PROGRAM FOR THE VARIANCE-COVARIANCE ESTIMATION OF GPS BASELINE VECTORS. N. Crocetto, M. Gatti, C. Materazzo, L. Toscano.
INTERFEROMETRIC SAR CALIBRATION. M. Crosetto, B. Crippa.
OPTIMISATION DES DATES D'ACQUISITION DES IMAGES TELEDECTION EN ZONE SOUDANO-GUINEENNE POUR UN SUIVI DES ECOSYSTEMES. Cheick Hamala DIAKITE.
FIELD TESTS ON DGPS USING OMNISTAR CORRECTION. D. Dominici, M. L. Pecetti, F. Radicioni, A. Stoppini.
CONTROL DIRECTIONS FOR THE CALIBRATION OF TERRESTRIAL NON-METRIC CAMERAS. Gabriele Fangi.
EXPERIENCES OF VIRTUAL REALITY. G. Fangi, G. Gagliardini.
THE GRID METHOD, A SIMPLE PROCEDURE FOR THE DETERMINATION OF THE LENSE RADIAL DISTORTION. G. Fangi, Carla Nardinocchi.
DEM'S COMPARISON FOR THE EVALUATION OF LANDSLIDE VOLUME. M. Fiani, S. Troisi.
AUTOMATIC DEM GENERATION IN QUARRIES. Gianfranco FORLANI, Livio PINTO.
STATIC CONTROL OF PALAZZO DELLA RAGIONE IN PADUA. Alberto Giussani, Giorgio Vassena.
Conditions préalables au fonctionnement efficace et durable d'un SIG à base de télédétection. Claus-Peter Gross.
PROCEDURES OF CORRECTION OF THE GEOMETRY DISTORSIONS FOR DIGITAL IMAGES. A. Guarnieri, A. Vettore.
GEOPLANTRANSF: A SOFTWARE FOR THE GEOREFERENCING OF DIGITAL IMAGES BY USING PLANE TRASFORMATIONS. Francesco Guerra, Caterina Balletti, Davide Miniutti.
LA DECADENCE EN PRODUCTION CARTOGRAPHIQUE EN AFRIQUE: CAUSES ET THERAPIES DE REDEMARRAGE. A. L. Gueye, B. F. Agbo, P. M. Kibora.
GEOMATICS EDUCATION IN NIGERIA: THE CURRENT DRIVES. A. L. Gueye, O. Aguda.
DE LA TOPOGRAPHIE CONVENTIONNELLE VERS LA GEOMATIQUE: UNE EVOLUTION TECHNOLOGIQUE DE L'ENSEIGNEMENT TECHNIQUE DANS LE SYSTEME EDUCATIF CAMEROUNAIS. HAPPI MANGOUA FREDERIC.
INTERNET-ATLAS OF NATURAL AND AGRONOMIC RESOURCES IN NIGER AND BENIN - A TOOL FOR PRESENTATION AND EXCHANGE OF SPATIAL DATA - . L. Herrmann, K. Vennemann, K. Stahr.
Mapping from Space. Gottfried Konecny.
CONTEMPORARY METRICAL DOCUMENTATION OF CULTURAL HERITAGE ARCHITECTURE. Mojca Kosmatin Fras.
Acquisition of Topographic Data by Laser Scanning and Digital Photogrammetry. Karl Kraus.
The GeoMed Project: GIS and Spatial/Temporal Statistics in Public Health. Andy Long, Mark Wilson, Geoff Jacquez, Leah Estberg.
GPS and GLONASS in Italy. Giorgio Manzoni.
GEOMATICS EDUCATION AND TRAINING IN BOTSWANA. L. Maphale, M. B. Manisa, B. Nkwae, C. Ezigbalike.
THE TWOFOLD NATURE OF MEASUREMENT AS EMPIRICAL AND LINGUISTIC OPERATION. Luca Mari.
UNCERTAINTY IN MEASUREMENT: A SURVEY. Luca Mari.
A RECTIFICATION OF DIGITAL IMAGES OBTAINED FROM AN ANALOGICAL VIDEORECORDING. Patrizia Midulla.
GENE FUCTIONAL MAPPING. Luciano Milanesi, Raffaella Rizzi.
THE APPLICATION OF GEOGRAPHIC INFORMATION SYSTEMS IN ENVIRONMENTAL IMPACT ASSESSMENT IN AFRICA: CHALLENGES AND OPPORTUNITIES. MLENGE FANUEL MGENDI.
GIS: TEACHING EXPERIENCE IN THE COURSE AT DIIAR POLITECNICO OF MILAN. Carlo MONTI, Raffaella BRUMANA, Luigi FREGONESE.
GIS TECHNOLOGY TO SUPPORT SURVEY DATA AND MANAGEMENT OF DIFFERENT QUARRY TYPOLOGIES. Carlo MONTI, Raffaella BRUMANA, Luigi FREGONESE, Giorgio Vassena.
LA FORMATION ET LA RECHERCHE AU CENTRE NATIONAL DES TECHNIQUES SPATIALES. A. OUSSEDIK, M. A. TRACHE.
GEOID BEHAVIOUR IN THE BAHIA BLANCA AREA. Raúl Perdomo y Daniel Del Cogliano, Nilda Di Croché, Esteban Napal, Beatriz Aldalur, Ana María De Aduriz, Pablo Napal, Nora Plana, Irene Pintos, Miguel Angel Martínez, Santiago Rosso.
GEOID MODELLING IN THE SOUTHERN REGION OF THE BUENOS AIRES PROVINCE. Raúl Perdomo, Daniel Del Cogliano, Nilda Di Croche, Esteban Napal, Beatriz Aldalur, Pablo Napal, Irene Pintos.
SATELLITAL IMAGING, INFORMATION SUPPORT OF A PROVINCIAL CARTOGRAPHIC PROJECT. E. QÜESTA, R. YANICELLI, V. FARES, L. LUNA, E. GOLDAR, D. SANDEZ, C. ISORNI, W. COSTA, E. TONELLI.
FORMATION ET PROJETS EN GEOMATIQUE MIS EN PLACE PAR L'ASSOCIATION POUR LE DEVELOPPEMENT DE L'INFORMATION ENVIRONNEMENTALE (ADIE) EN AFRIQUE CENTRALE. Ralph Ridder, Brice Montfraix, Stéphane Lombardo.
CONSTRUCTION OF BASIC DIGITAL MAP FOR CITY GIS BY STEREOPHOTOGRAMMETRIC APPROACH. B. Ruzgiene.
SAGE: AN ITALIAN PROJECT OF SATELLITE ACCELEROMETRY. F. Sanso, A. Albertella, G. Bianco, A. Della Torre, M. Fermi, V. lafolla, A. Lenti, F. Migliaccio, A. Milani, A. Rossi.
THE TEACHING OF REMOTE SENSING IN SOUTH AMERICA. Tania Maria Sausen.
CROP GROWTH MODELLING IN MALI BASED ON ERS SCATTEROMETER INFORMATION. Pierre C. Sibiry Traoré, Mamadou D. Doumbia, Salifou Sissoko, Abderamane Yoroté, Wolfgang Wagner, Klaus Scipal, Anne Gobin, Paul Campling, Erik Nobbe, Rob Beck.
TER LOW COST SMALL SATELLITES FOR EARTH OBSERVATION AND TECHNOLOGY TRANSFER TO DEVELOPING COUNTRIES. Martin Sweeting, Wei Sun.
MAPPING OF HYDROTHERMAL ALTERATION BY REMOTE SENSING AT THE ACOCULCO CALDERA, PUEBLA, MEXICO. VICENTE TORRES RODRÍGUEZ & GABRIEL ORIGEL GUTIÉRREZ.
ISSUES AND APPROACHES IN MAPPING THE IMPACTS OF MINING ON THE ENVIRONMENT IN AFRICA (WITH TEST CASE FROM KITWE MINE, ZAMBIA). Tsehaie Woldai, Daniel Limptlaw.
POTENTIAL FOR COMPUTER ASSISTED DISTANCE LEARNING IN ZAMBIA: WHAT ARE THE CONSTRAINTS AND THE WAY FORWARD. Paul Zambezi.
Appendix: Authors and Co-authors Index.
Cover

Full text

246 
To be economically acceptable, DEM generation 
should provide accuracies matching those of manual 
plotting (i.e. between 0.1-0.2 %o of the relative flight 
height h r ) in a shorter time. Since the point 
measurement rate is much higher than that of the 
human operator (and bound to increase further with 
processing power), large DEMs with hundreds of 
thousands points may be generated in an hour time or 
less, depending on hardware and software 
performance. As far as accuracy is concerned, figures 
range from 0.1 to 0.8 h r (Bacher, 1998; Balsavias and 
Kaeser, 1998, Duperet, 1995), therefore not always 
matching manually produced DEM. Off-line editing is 
necessary, clearly pointing out that self-diagnosis tools 
are not as reliable as they should. Indeed, in large scale 
photogrammetry and problem areas the percentage of 
points to edit may be as large as 10% or more, making 
it a key feature of the system the performance of the 
editing tools available to the user. 
Any DEM generation system has self-diagnosis 
capabilities at the matching level as well as at the 
interpolation level. At the former, systems mostly 
provide a quality index of each matched point which 
can be as simple as the correlation coefficient 
(confronted with a terrain and/or image dependent 
threshold) or may be based on a classification scheme, 
reporting or providing hints in case of failure, in more 
sophisticated systems. Overall, though, they are not 
always reliable, since they may label as good wrong 
points or may discard them as wrong when they are in 
fact good ones. At the interpolation level, self- 
diagnosis is understood here mainly as the capability of 
filtering out non-terrain objects, rather than blunders in 
the matching process, which may be best dealt with by 
geometric constraints supporting the matching. 
Despite this drawbacks, the advantage of automation is 
spreading the use of automatically generated DEM. 
Recently we have been involved in a project in the 
framework of the management of tens of marble 
quarries in northern Italy, in the province of Brescia. 
The goal of the investigation is to check the accuracy 
level of automatic DEM generation in these areas and 
what kind of project parameters (image resolution, 
scanning accuracy, additional terrain information, 
matching techniques) are best suited. This paper 
reports on the results of DEM generation in the 
repeated survey of a rock quarry, to figure out the 
volume of material excavated, using aerial images. 
This information is used in planning the exploitation of 
the quarries by the authorities in charge; accuracies of 
some percentage point on the volume’s estimate are 
acceptable. A direct control of the excavation volumes 
to fix taxes has been for the time being ruled out, since 
weigthing the lorries in and out of the quarry is more 
accurate. 
2. THE PILOT PROJECT BOTTICINO 
The project goals were set as follows; 
1) to study which selection of the flight parameters 
would be the best so that the performance of DEM 
generation could be improved; 
2) to study the accuracy of the DEM and of DEM 
changes, with respect to DPW system (scanner as 
well as software) and what gains could be made by 
first measuring manually a low resolution DEM. 
The marble quarry in Botticino, a small village near 
Brescia, was chosen as a test area, because a recent 
aerial survey was available and because it is quite 
representative of the quarries in the area; they are 
located in steep hills, with height differences from top 
to bottom up to 400-500 m; their fronts range from 
several hundreds meters to more than 1 km. 
The excavation proceeds in stages, cutting the hill side 
in banks 10 to 30 m high, slightly inclined downhill; 
though more or less you may recognize a main front 
running parallel to the contour lines, large blocks are 
extracted here and there, leading to a pattern of 
“holes”. Debris is spread around in several areas, 
depending on which front is currently active. The hills 
around the quarries are covered by bushes and trees, 
while the excavation area is rather bright, resulting in a 
scene with an overall high dynamic range but (though 
not everywhere) a low contrast within the quarry, in 
full daylight and clear sky. 
The first flight, executed in summer 1997, consists of a 
single strip with 4 images (numbered 49 to 52) at the 
average scale 1:5600 and lead to the compilation of a 
1:1000 map of the quarry, which is contained in the 
model 50_51. Although the flight was flown around 
midday, sharp shadows are projected from the banks, 
making sometimes difficult to identify the exact 
location of the base of the walls. 
2.1 The new flight plan 
As already mentioned, the second part of the project is 
supposed to complete a new flight over the same area, 
to highlight volume changes in the time span and to 
allow an accuracy evaluation thanks to a topographic 
survey. 
The new flight plan has been designed in order to 
improve the accuracy of automatic DEM generation by 
proper choice of the flight parameters. Three aspects 
have been taken into account: flight height and camera 
focal lenght, endlap and sidelap values along and 
across strip and finally strip direction versus terrain 
morphology. 
For a constant image scale, a lower flight height means 
using larger focal lenghts, increasing areas prone to 
occlusions and perspective distortions. A longer focal 
lenght would reduce the occlusions and also help 
image correlation to account for perspective 
differences; if image scale is taken constant, this would 
on the other end change the H/B ratio, worsening the 
elevation accuracy. Larger image scales, compare to 
the well established standard values adopted in 
mapping with analytical plotters, would undermine the 
economies obtained by digital methods, as only for the 
larger surveying work implied. Based on this 
reasoning, either image scale and focal lenght have 
been retained to the values of the preceeding flight. 
Though it is hard to figure out their effect in advance, 
experience shows that occlusions and terrain 
discontinuities degrade the accuracy of DEM generated

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