bluuebunny/crossref_metadata_2025_split huggingface dataset:
THE COMPUTATION OF THE ORDNANCE SURVEY BUTE AERIAL TRIANGULATION USING XYZBLC
Authors: Cooper M. A. R. 
Published: July 2010

AbstractSome aspects of the XYZBLC suite of programs for aerial triangulation are described. The Ordnance Survey Bute block of photography at a scale of 1: 24000 is computed by independent models using XYZBLC. Three of the strips in the block are treated as a test block and are computed with different configurations of control. Conclusions are drawn with regard to the usefulness of height control doublets and other dense control configurations.Résumé Quelques aspects de l'ensemble XYZBLC de logiciels d'aérotriangulation sont décrits. Le bloc Bute de l'Ordnance Survey, composé de photographies à l'échelle du 1: 24000, a été calculé par modèles indépendants avec les logiciels XYZBLC. On a considéré trois des bandes du bloc comme formant un bloc d'essai et on les a calculées avec diverses combinaisons de canevas de points d'appui. On en tire des conclusions quant à l'utilité des doublets de points d'appui altimétriques et de diverses autres configurations denses de canevas d'appui. Zusammenfassung Beschreibung einiger Aspekte des XYZBLC‐Programmsystems zur Aero‐triangulation. Ein Block des Ordnance Survey im Bildmassstab 1: 24000 wurde damit nach der Methode der unabhängigen Modelle berechnet. Drei der Streifen des Blocks wurden als Testblock behandelt und mit verschiedenen Passpunktanordnungen berechnet. Es werden Schlussfolgerungen in bezug auf die Nützlichkeit von Zwillingspunkten zur Höhenorientierung und andere dichte Passpunktanordnungen gezogen.
THE USE OF SYNTHETIC APERTURE RADAR FOR MAPPING
Authors: Dowman I. J. , Morris A. H. 
Published: July 2010

AbstractThere is a growing interest in the potential of synthetic aperture radar (SAR) for mapping and for gathering intelligence for map revision. This paper first gives a simple guide to the characteristics of SAR and then describes a study carried out to investigate the geometric properties of the imagery and the information content which is of interest for topographic mapping and the production of large scale plans. The conclusions cautiously indicate a potential although better quality images are required and more information must be known about the optimum conditions which should obtain when the data are recorded.RésuméOn assiste à un intérét croissant envers le radar à ouverture synthétique (SAR) et ses possibilityés pour la cartographie et pour la collecte de renseignements utiles à la révision. Ce texte commence par donner un simple rappel des caractéristiques de ces radars pour décrire ensuite une étude effectuée sur le contenu informatif et les proprietyés géométriques de l'imagerie radar, qui intèresse la cartographie topographique et la confection de plans à grande échelle.Les conclusions font prudemment état d'une potentialité mais soulignent qu'il faudrait disposer d'images de meilleure qualityé et avoir davantage d'informations sur les conditions optimales à respecter lors de l'enregistrement des données.ZusammenfassungEs besteht zunehmendes Interesse an den Möglichkeiten von Radaraufnahmen mittels synthetischer Apertur (SAR) zur Kartenherstellung und Erfassung von Daten zur Laufendhaltung. Zunächst wird im Artikel eine einfache Einführung in die SAR‐Charakteristika gegeben. Dann erfolgt eine Beschreibung eines Versuches zur Untersuchung der geometrischen Eigenschaften und des Informationsgehalts, der von Interesse für die Herstellung topographischer und grossmassstäbiger Karten ist. Vorsichtige Schlussfolgerungen ergeben Möglichkeiten zur Verwendung solcher Informationen, wobeijedoch eine bessere Bildqualität zu fordern ist. Auch müssen noch mehr Kenntnisse über die optimalen Bedingungen bezüglich der Datenregistrierung bestehen.
APPLICATION OF THE WILDMAP SYSTEM IN A PRODUCTION ENVIRONMENT
Authors: Byrne S. T. , Neill L. 
Published: July 2010

AbstractA brief account of the background which influenced B.K.S. Surveys Limited to introduce an integrated digital mapping package is presented, followed by an outline of the features of the Wildmap system. The specific photogrammetric hardware configuration and production procedure adopted by B.K.S. are also described.Résumé Cet article donne un rapide compte‐rendu des conditions environnantes qui ont conduit la Société B.K.S. Surveys Limited à se doter d'un ensemble intégré de cartographie numérique. II fournit également un aperçu des caractéristiques du système Wildmap et une description de la configuration particulière du matériel photogrammétrique et de la méthodologie adoptée en production par B.K.S.Zusammenfassung Kurze Darstellung von Hintergrundinformationen, die B.K.S. Surveys Ltd. bei der Einführung eines integrierten Programmpakets zur digitalen Kartenherstellung beeinflussten und Skizzierung der Grundzüge des Wildmap‐Systems. Ausserdem werden die spezielle photogrammetrische Hardware und die bei B.K.S. angewandte Technologie beschrieben.
OBSERVATIONS ON THE DEVELOPMENT OF A DIGITAL MAPPING SYSTEM
Authors: Storey P. 
Published: July 2010

AbstractObservations are made which reflect the ideas behind and experiences gained in the development of a digital mapping system at Clyde Surveys Limited since late 1979. The paper emphasises increased operator responsibility, describes the use of voice recognition equipment and suggests a need for more widespread understanding of digital techniques at all levels of photogrammetric map production.Résumé Cet article se fait l'écho des idées qui sous‐tendent le système de cartographie numérique de la Clyde Surveys Limited et fournit des informations sur l'expérience acquise dans son développement depuis la fin 1979. On y met en relief l'accroissement de responsabilité des opérateurs, et l'on y décrit l'emploi des dispositifs de reconnaissance de la parole. Il serait souhaitable d'obtenir une plus large acceptation des techniques numériques dans toutes les phases de la production des cartes par voie photogrammétrique.Zusammenfassung Es erfolgen Mitteilungen über Grundgedanken und Erfahrungen, die bei der Entwicklung eines digitalen Kartiersystems bei Clyde Surveys Ltd. seit Ende 1979 gesammelt wurden. Im Artikel wird die gesliegene Verantwortung des Auswerters hervorgehoben, es erfolgt die Beschreibung einer Ausrüstung zur Erkennung gesprochener Worte und es wird die Notwendigkeit für ein besseres Verständnis digitaler Verfahren auf allen Ebenen der photogrammetrischen Kartenherstellung betont.
A SIMPLE SYSTEM FOR PHOTOGRAMMETRIC MAPPING IN SHALLOW WATER
Authors: Fryer J. G. 
Published: July 2010

AbstractA photogrammetric system that is suitable for shallow water detailed mapping at scales from 1:50 to 1:500 for coastal and harbour engineering projects is described. The results from tests using automatic 35 mm Canon cameras on an elevated platform to determine the accuracy of planimetric and depth co‐ordinates are presented. The economic benefits of stereophotography through shallow water rather than underwater photography are discussed.
DIGITAL IMAGE CORRELATION: PERFORMANCE AND POTENTIAL APPLICATION IN PHOTOGRAMMETRY
Authors: Ackermann F. 
Published: July 2010

AbstractA procedure for digital image correlation is described which is based on least squares window matching. The immediate aim is high precision parallax assessment, point transfer, and point measurement. Experiments and theory have confirmed the high accuracy potential of the method. By implementation of charge coupled device (CCD) video cameras in an analytical plotter, an experimental hardware and software configuration has been established with which the operational on line application of digital image correlation for conventional photogrammetric measuring tasks can be tested. First results of calibration and performance of the system are presented. They allow optimistic conclusions as to the further development and practical application of digital image processing in photogrammetry.
METRIC CAMERA DATA: ASSESSMENT AND POTENTIAL USE AT L'INSTITUT GÉOGRAPHIQUE NATIONAL
Authors: Ducher G. 
Published: July 2010

AbstractA short review is given of the involvement of the Institut Géographique National (IGN) in the European Space Agency Spacelab Metric Camera (MC) experiment. IGN has participated in this project from the early stages of its preparation in 1974. The assessment of MC data has been carried out for both metric and thematic purposes. Using a Matra Traster analytical plotter, a contoured map of Carpentras. included in the European standard test site of Marseille, has been prepared at a scale of 1:100 000 with 100 m and 50 m contour intervals. Preliminary comparison of this map with the topographic data base shows a height accuracy of about 30 m. Orthophotographs have been produced of the same area, at 1:100000 scale and at 1:250000 scale. showing good agreement with the basic line map.An infrared colour pseudo‐orthophotograph has been produced for Khartoum (assuming that the ground was flat) and a space map of a desert area of Algeria has been printed at 1:200000 scale, allowing a good comparison with the drainage shown on the existing line map.Interpretation of the MC photography has also been assessed and compared with conventional IGN aerial photography taken over the European standard test site. Due to the low sun elevation and the apparent image motion which affected the MC photography, the result is not as good as was expected. Some linear features of 6m width are visible (for example, roads and hedges) but for positive identification a width of 18m is necessary. It is difficult to determine the extent of cities and land parcels less than 40 × 40m are not visible. However, the MC data can be used for checking and revising some features of small scale maps (smaller than 1:100000). Two experiments have been performed in thematic interpretation, one concerned with land use and the other with forest mapping.Some improvements of the MC are suggested in order to satisfy the major requirements of users while the possibilities of topographic mapping from these data are summarised.
DIGITAL MAPPING: SOME COMMERCIAL EXPERIENCES
Authors: Byrne S. T. 
Published: July 2010

AbstractFollowing the installation of the Wildmap digital mapping system, B.K.S. Surveys Ltd. has successfully completed a number of digital mapping projects in Europe, the Middle East and the United States. As a result of experience gained through meeting clients’requirements, carrying out market research and making in house developments the company has updated its original conceptual approach to digital mapping to meet current demands for a land information system. At present B.K.S. is involved in creating a database that is composed of utility, cadastral and topographical data designed for both graphical output and digital processing for resource planning.
DEVELOPMENTS WITH THE COBLO BLOCK ADJUSTMENT PROGRAM
Authors: Juliá J. E. 
Published: July 2010

AbstractIn spite of the striking progress in block adjustment techniques, it is widely assumed that their application continues to be out of reach for a large part of the photogrammetric community that cannot afford expensive computer systems. The COBLO program performs rigorous block adjustment with models and can be implemented even on inexpensive microcomputers. The first COBLO versions are in operation in several places in South America and Europe and the latest versions, which are considerably more efficient, are now being introduced. This paper describes the main features of different COBLO versions and presents the experience of some users.
INTEGRATION OF PHOTOGRAMMETRIC, REMOTE SENSING AND DATABASE TECHNOLOGIES FOR MAPPING APPLICATIONS
Authors: Welch R. A. 
Published: July 2010

AbstractThe availability of data in digital formats, the rapid evolution of computer systems and the increased demands for cartographic databases are causing photogrammetrists to consider ways of integrating photogrammetric, remote sensing and database technologies. Examples are presented involving the use of aerial photographs and satellite images in combination with geographical information systems and image processing techniques to assess soil erosion, growth of aquatic vegetation and to enhance satellite images for the compilation or revision of map products.
SPOT DATA EVALUATION AND USE AT INSTITUT GÉOGRAPHIQUE NATIONAL, FRANCE
Authors: Foin P. 
Published: July 2010

AbstractSince the launch of SPOT, Institut Géographique National, France has carried out several investigations concerned with in‐flight evaluation, research operations and the setting up of production flowlines. The aims of assistance to data bank establishment, revision of existing maps and image map and thematic map production have now been achieved for the most part. Some procedures are already operational, including image product making, photogrammetry on SPOT images, classifications on image processing systems, manual information retrieval and image map production. Moreover, various research operations are virtually complete, including automatic correlation, composite processes between aerial photographs and SPOT images, quite promising mathematical morphology associated with expert systems for retrieving linear or complex textured (built up area) elements, and manual cartography on image processing system. These results confirm the great benefits of SPOT system capabilities and the characteristics of flexibility, accuracy and reliability.The Photogrammetric Society and the Remote Sensing Society held a one‐day symposium at Burlington House, London on 11th November, 1987. The SPOT (Système Probatoire d'observation de la Terre) satellite had then been operational for 18 months and many organisations had been working with the data. This symposium reviewed the operation of the satellite and studies which had been carried out for mapping and for thematic applications. Six of the symposium papers are published here. It is expected that other papers from the symposium will be published in the International Journal of Remote Sensing.
MAP REVISION FROM STEREO‐ORTHOPHOTOGRAPHS
Authors: Ali M. J. , Dowman I. J. 
Published: July 2010

AbstractMap revision is now recognised as the major problem facing mapping organisations in developed countries and to a lesser extent in developing countries. This paper explores the long established, but little used, method of employing stereo‐orthophotographs, in conjunction with two instruments. The Ross Stereo‐orthophoto Plotter was developed specially for this purpose and the Cartographic Engineering CPI stereoplotter has been modified. A description is given of the techniques used to test the accuracy and efficiency of using stereo‐orthophotographs for map revision at large and medium scales. Results indicate that the method is viable.
THE CURRENT INVOLVEMENT OF IGN IN PHOTOGRAMMETRY
Authors: Ducher G. 
Published: July 2010

AbstractA review of some recent activities undertaken by the Institut Géographique National, France (IGN) in photogrammetry is given in this paper, especially with regard to digital and space data processing, assessment of SPOT images and the development of new instruments and experimental map products. The main topics considered can be divided into three groups: aerial surveying, digital photogrammetry and space photogrammetry (including the possibility of further planetary missions).
STEREOSCOPIC SUPERIMPOSITION
Authors: K)uml;lbl O. 
Published: July 2010

AbstractThe replacement of the graphical map by geographic information systems has modified the requirements in photogrammetric data acquisition. An important element in this context is the possibility of superimposing a digital map into the oculars of photogrammetric measuring systems. The Institute of Photogrammetry, at EPF‐Lausanne, in collaboration with the Institute of Micro‐Informatics and Wild Heerbrugg Ltd., has developed a device for stereoscopic superimposition which is integrated into the photogrammetric measuring system of the Wild S9‐AP. The technical requirements of a stereoscopic superimposition system concerning image quality and scrolling are discussed, followed by a description of the technical implementation and the functioning of the superimposition system. Finally, the operation of the System 9‐AP and various applications are presented.
CONSIDERATIONS OF SPECIFICATIONS FOR SMALL FORMAT AERIAL PHOTOGRAPHY
Authors: Graham R. W. , Tthomson G. H. 
Published: July 2010

AbstractFollowing the success of the symposium held by the Photogrammetric Society on 31st March, 1987, a second one‐day symposium was convened to give further support to the rapidly growing interest in the development of small format photography for aerial survey. This was held at Burlington House, London on 1st November, 1988. Over 70 people attended. Six of the papers are reproduced here, dealing with a range of topics including specifications for and navigation of small format aerial photography, the creation of digital terrain models from 35 mm photography, wildlife surveys in the Arctic and survey photography from model aircraft and tethered balloons.
ARCHITECTURE AND COMPONENTS OF PHOTOGRAMMETRIC WORKSTATIONS
Authors: Bonjour J.‐D. , Newby P. R. T. 
Published: July 2010

AbstractSeveral generations of photogrammetric workstations have followed one another since the analytical plotter was developed at the beginning of the 1960s. The outcome of this evolution, resulting from important developments in mini‐ and microcomputers, is illustrated today by more and more powerful photogrammetric workstations based on distributed processing architecture. This paper introduces present day architectures, as well as hardware and software aspects of the various components of these systems including graphics workstation, real time processor, superimposition system, correlation system and special input/output devices. Finally, an attempt is made to outline the prospects for further evolution.
DANISH EXPERIENCES IN GEOGRAPHICAL INFORMATION SYSTEMS
Authors: Brande‐Lavridsen O. 
Published: July 2010

AbstractMany organisations are today working at establishing information systems and quite a few exist already. When it comes to geographical information systems (GIS), the geographical reference will soon be solved. All new mapping in Denmark is digital and in 1992–93 the country will have complete coverage. In addition, many public registers are already computerised. A lot of other information sources, like utility networks, are still to be converted.As these developments are in the hands of many different organisations, both private and governmental, this paper will deal with the efforts made to co‐ordinate various activities in a strongly competitive world.As there is a distinct difference between large scale and small scale GIS activities, this paper will deal mainly with large scale GIS, as should be the case when considering GIS and photogrammetry.
THE IGN (FRANCE) TOPOGRAPHIC DATABASE
Authors: Faad C. 
Published: July 2010

AbstractThe French topographic database is a three dimensional database whose content is very near to that of the IGN 1:25 000 scale maps. It has a metric accuracy and is designed to have three aims (maps at scales of 1:25 000 and 1:50 000 and the topographic part of the cadastral map at 1:5000 scale, providing located structured data). The structure, including topology information, is described. The process of data capture is based on photogrammetry and field completion. Experiments concerned with revision are being made in order to define the methodology precisely.
A RELATIVE ORIENTATION FOR MOTOR VEHICLE ACCIDENT PHOTOGRAMMETRY
Authors: King B. A. 
Published: July 2010

AbstractRelative orientations of eight stereomodels of a motor vehicle accident scene taken with stereometric cameras were made on an Adam Technology MPS‐2 microphotogrammetric system. The most consistent results for the relative orientations were achieved with 12 pass points—six around the extremities and six in the centre of the format. Systematic errors in the direction normal to the photography were detected. Two methods to correct these errors were investigated—scaling of the camera base and computing a camera convergence correction. The best results were achieved with the convergence correction.
THE TOMB OF CHRIST, JERUSALEM: A PHOTOGRAMMETRIC SURVEY
Authors: Biddle M. , Cooper M. A. R. , Robson S. 
Published: July 2010

AbstractFollowing a brief historical review of the background to this survey of the Tomb of Christ, Jerusalem, some details of the procedures adopted during the 1989 and 1990 site visits are described. Computations and photogrammetry following the 1989 site visit are summarised and illustrated. Some preliminary results of the 1990 control survey computations of quasi‐sequential least squares estimates are given.RésuméAprès avoir fourni un bref aperçu historique des conditions dans lesquelles s'est effectué le relevé du Tombeau du Christ, à Jérusalem, les auteurs donnent quelques détails sur les procédés utilisés lors des visites sur le site en 1989 et en 1990. Un résumé accompagnéďillustrations décrit les travaux de calculs et de photogrammétrie qui ont suivi la visite du site en 1989. Quant à celle de 1990, on peut y trouver quelques résultats préliminaires des calculs sur le levé de contrôle, avec des évaluations issues des moindres carrés.ZusammenfassungNach einem kurzen historischen Überblick über die Vorgeschichte dieser Vermessung des Grabes von Christi in Jerusalem werden einige Einzelheiten der 1989 und 1990 während der Besuche vor Ort angewandten Verfahren beschrieben. Die im Anschluβ an die örtlichen Arbeiten im Jahre 1989 durchgeführten Berechnungen und photogrammetrischen Auswertungen werden zusammengefaβt und dargestellt. Schlieβlich werden einige vorläufige Ergebnisse der 1990 erfolgten Berechnungen zur Paβpunktbestimmung mittels quasi‐sequentieller Schätzungen nach der Methode der kleinsten Quadrate mitgeteilt.
THE 1987–1989 SCOTTISH NATIONAL AERIAL PHOTOGRAPHIC INITIATIVE
Authors: Kirby R. P. 
Published: July 2010

Abstract In 1987, the Scottish Office commissioned vertical aerial photography for the whole of Scotland at 1:24 000 scale. The paper describes the need for this national coverage, the physical and economic constraints and the acquisition of the photographs. The principal use of the photography, as a database for measuring land cover change in Scotland, is summarised and numerous other projects are also described. Résumé Le Bureau des Affaires Écossaises a commandé en 1987 une couverture photographique aérienne verticale au 1:24000 sur ľensemble de ľÉcosse. On présente dans cet article les besoins qui ont motivé cette couverture, les contraintes économiques el physiques correspondantes et le déroulement de sa saisie. On donne un aperçu de la principale utilisation de ces photographies, destiniées à constituter une base de données pour la détermination des modifications intervenues en Écosse dans ľoccupation du sol; de nombreux autres projets sont également mentionées. Zusammenfassung Im Jahre 1987 gab das Scottish Office Auftrag zur Luftbildaufnahme im Maβstab 1:24000 von ganz Schottland. Im Artikel werden die Notwendigkeit für diese vollständige nationale Bedeckung, für die physikalischen und ökonomischen Zwangsbedingungen und für die Beschaffung der Fotos beschrieben. Die prinzipielle Nutzung der Fotografie als Datenbasis zur Bestimmung der Landnutzungsänderung in Schottland wird hervorgehoben und zahlreiche andere Projekte werden ebenso beschrieben.