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  • Articles  (11,388)
  • 1975-1979  (10,186)
  • 1955-1959  (1,202)
  • Architecture, Civil Engineering, Surveying  (11,388)
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  • Articles  (11,388)
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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1979), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: The design and performance of a computer assisted system for aerial triangulation, mapping and digital data output are described with examples of practical applications. The economic and human considerations are reviewed after three years' experience with the system in production.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméOn décrit le plan et le fonctionnement d'un système d'ordinateur assisté pour la triangulation aérienne, le rendement des données digitales et cartographiques, avec exemples de leurs applications pratiques. On explore les considérations économiques et humaines après 3 ans d'expérience avec le système en production.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungAuf bau und Leistungsfähigkeit eines rechnergestützten Systems zur Aerotriangulation, Kartenherstellung und digitalen Datenausgabe werden unter Angabe von Beispielen zur praktischen Anwendung beschrieben. Nach dreijähriger Produktionserfahrung wird ein Überblick über ökonomische und menschliche Probleme gegeben.
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1979), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: This paper considers a few aspects of the influence which Professor E. H. Thompson had upon the development of analytical techniques in photogrammetry, a field in which he was a prolific leader. The writer gives a purely personal view of Thompson's influence on his own studies, mainly in analytical aerial triangulation, over the period of their association.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméCette communication considère quelques aspects de l'influence qu'eut le professeur E. H. Thompson sur le developpement des techniques analytiques en photogrammétrie, un domaine dans lequel il fut un leader proliphique. L'auteur donne une vue purement personnelle de l'influence de Thompson sur ses propres études, en particulier sur la triangulation aérienne analytique, au cours de leur association.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungIm Beitrag werden einige wenige Gesichtspunkte bezüglich des Einflusses, den Prof. E. H. Thompson auf die Entwicklung analytischer Verfahren in der Photogrammetrie ausübte, einem Gebiet auf dent er eine herausragende Persönlichkeit war, erörtert. Dabei wird eine rein persönliche Ansicht bezüglich des Einflusses von Thompson auf die Arbeiten des Autors wiedergegeben, insbesondere in der analytischen Aerotriangulation während der Zeit, wo sie gemeinsam gearbeitet haben.
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1979), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: This article provides a brief description of the functions and capabilities of an image generating system developed by Linotype-Paul Limited for the Royal Aircraft Establishment, Farnborough.〈section xml:id="abs1-2"〉〈title type="main"〉Résumé Cet article donne une courte description des fonctions et des possibilités d'un système generateur d'images developpé par Linotype-Paul Limited pour Royal Aircraft Establishment, Farnborough.〈section xml:id="abs1-3"〉〈title type="main"〉Zusammenfassung Kurze Beschreibung der Funktionen und Fähigkeiten eines bilderzeugenden Systems, das bei der Linotype-Paul Limited für das Royal Aircraft Establishment in Farnborough entwickelt wurde.
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1979), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Problems are sometimes encountered during the relative orientation of close range photography which has a limited usable format and a large Z range. Computer simulations and practical tests with both a comparator and a plotting instrument are used to investigate the problems and possible inaccuracies. Systematic errors in the photogrammetric model are revealed.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméOn rencontre souvent des difficultés lorsqu'on forme un modèle avec des clichés pris à courte distance, à format réduit et lorsque l'objet présente quelque profondeur. On a approfondi ces problèmes en utilisant conjointement simulations et essais pratiques; on a prouvé ainsi que les déformations du modèle étaient systématiques.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungMitunter ergeben sich bei der relativen Orientierung von Nahbereischsbildern Probleme, weil das nutzbare Bildformat klein und der z-Bereich gross sind. Mit Hilfe von Computer-Simulationen und praktischer Tests mit einem Komparator bzw. einem Auswertegerät wurden die Probleme und mögliche Ungenauigkeiten untersucht. Dabei wurden systematische Fehler in dem photogrammetrischen Modell aufgedeckt.
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1979), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1979), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Three investigations of the suitability of photogrammetry as a method of measurement are described, in the fields of marine, mechanical and structural engineering. Analytical solutions for a single model, a strip and a block of photographs are discussed.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméOn décrit trois tentatives de recours à la photogrammétrie en métrologie industrielle, dans les industries de la marine, de la mécanique, et des structures métalliques. On discute l'intérêt des solutions analytiques pour le couple, la bande ou le bloc de photos.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungBeschreibung von drei Untersuchungen bezüglich Eignung der Photogrammetrie als Messverfahren im Schiffbau, im Maschinenbau und im Bauwesen. Diskussion analytischer Lösungen für das Einzelmodell, die Bildreihe und den Block.
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1979), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: The concept of optimum interpolation is briefly explained. The use of polynomial and non-polynomial stepwise regression for obtaining optimum or near optimum interpolation is illustrated. Least squares collocation is presented as an advanced method for optimising stepwise regression whenever the latter does not achieve desired optimum interpolation for given terrain. A Fortran IV program, written to illustrate an optimum interpolation algorithm using stepwise regression and collocation, is found to produce better results than existing interpolation methods. Other applications of such an algorithm are also discussed.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméOn expose brièvement le concept d'interpolation optimale, ainsi que les méthodes d'approximation polynomials ou autres qui permettent de la réaliser localement au mieux. On présente la collocation comme une méthode permettant de parachever l'interpolation; on a trouvé effectivement, avec un programme écrit en Fortran IV, que les résultats obtenus ainsi étaient meilleurs. On envisage aussi d'autre types d'applications de cet algorithme.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungKurze Erläuterung des Begriffs der optimalen Interpolation. Skizzierung der Anwendung von schrittweiser Regression mit Hilfe von Polynomen oder anderen Verfahren zur Ermittlung optimaler oder genähert optimaler Inter-polationen. Die Kollokation nach kleinsten Quadraten wird als verbesserte Methode zur Optimierung der schrittweisen Regression dargestellt, wenngleich letztere keine optimale Interpolation für ein gegebenes Gelände liefert. Ein Rechenprogramm in Fortran IV, das zur Veranschaulichung eines optimalen Interpolations-Algorithmus mit Hilfe der schrittweisen Regression und Kollokation geschrieben wurde, lieferte bessere Ergebnisse als vorhandene Interpolationsmethoden. Andere Anwendungen eines solchen Algorithmus werden ebenfalls erörtert.
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1979), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1979), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1979), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 11
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1979), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 12
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: A panel of speakers, knowledgeable in the problems of photogrammetry in the Third World, led a discussion which considered the place of sophisticated photogrammetric equipment in the Third World, problems of technician and management training, the desire for self reliance, and the needs of map revision.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméUne confrontation entre photogrammètres sur le sujet photogrammétrie et tiers-monde; équipement, instruction des techniciens, problèmes d'organisation, désir d'autonomie, révision des cartes.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungEin Forum von Kennern der Probleme der Dritten Welt führte eine Diskussion über den Platz moderner Geräteausrüstungen in diesen Ländern, über Probleme der Ausbildung von Technikern und Führungskadern und erörterte den Wunsch nach Selbstbestätigung und die Notwendigkeit zur Laufendhaltung von Karten.
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  • 13
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1978), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: The problems associated with the depiction of a particular irrigation area by both line map and orthophotomap are described and the results compared.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméDes problèmes soulevés par la description d'une aire d'irrigation à l'aide d'une carte ou d'une ortho-photocarte: comparaison des résultats.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungBeschreibung der Probleme, die bei Auswahl sines Bewässerungsgebietes an Hand von Strich- und Orthophotokarten auftraten und Vergleich der Ergebnisse.
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  • 14
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1978), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: In 1981, a metric camera will be launched into space on a European Space Agency Spacelab mission. This paper examines the specification for this mission and the expected results. Other developments are also considered. These include the American large format camera and long focal length imaging systems.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméEn 1981, une chambre métrique sera lancée dans l'espace (mission Spacelab de l'organisation européenne spatiale). On examine ici les buts et les résultats attendus, ainsi que de futurs développements; chambre américaine à grand format, systèmes à longues focales.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungIm Jahre 1981 soll sich an Bord des Europäischen Spacelab-Satelliten eine Messkammer befinden. Im Artikel werden die Anforderungen an dieses Projekt und die zu erwartenden Ergebnisse diskutiert. Desgleichen werden auch andere Entwicklungen, worunter sich die amerikanische Grossformat-Kammer und langbrennweitige Systeme befinden, erörtert.
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  • 15
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1978), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 16
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1978), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 17
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1978), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 18
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1978), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 19
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1978), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: A close range photogrammetric system, developed around a 35 mm Pentax camera fitted with a wide angle lens (f = 21 mm) and an early Zeiss wide angle multiplex, has proved useful for both instruction and research. Student exercises involve all phases of photogrammetry, from establishing ground control to plotting, and permit the integration of useful statistical routines for data analysis. Research applications have centred on the topographic mapping of microscale landforms at scales of 1: 1 to 1: 10 with accuracies of ± 1 mm to ± 5 mm.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméUn système mis au point pour la photogrammétrie à courte distance, et dont les éléments essentiels sont une chambre Pentax (f = 21 mm) et un Zeiss grand angle multiplex, a fait la preuve de son utilité tant pour l'instruction que pour la recherche. Les exercices proposés aux étudiants comportent toutes les phases réelles, depuis l'établissement d'un canevas d'appui jusqu'à la restitution. Les applications à la recherche sont centrées sur la cartographie des microreliefs à des échelles variant de 1: 1 à 1: 10 avec des exactitudes variant de ± 1 mm à± 5 mm.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungEin Aufnahme- und Auswertesystem zur Nahphotogrammetrie, bestehend aus einer 35 mm Pentax Kamera, die mit einem Weitwinkelobjektiv (f= 21 mm) ausgerüstet war, und ein alter Weitwinkel-Multiplex von Zeiss haben sich bei der Ausbildung und Forschung als nützlich erwiesen. Bei den studentischen Übungen werden alle Phasen der Auswertung von der Passpunktbestimmung im Gelände bis zur Stereokartierung erfasst, wobei es auch möglich ist, statistische Tests zur Datenanalyse einzubeziehen. Die Forschungsarbeiten konzentrierten sich auf die Herstellung topographischer Karten von kleinmassstäbigen Geländeformen in den Massstäben 1: 1 bis 1: 10 mit Genauigkeiten von ± 1 mm bis ± 5 mm.
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  • 20
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1978), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Stimulated by promising overseas results with colour aerial photography and encouraged by its potential for solving local problems, the Forests Commission, Victoria, embarked on a series of trials with colour photography in 1965. Early results showed great promise and resulted in further work. This paper describes the methods and results of 70 mm and 35 mm trials concerned with the evaluation of various photographic films. An important aim of the study was to build up a working knowledge of the techniques of using aerial films other than conventional panchromatic black and white and to assess their value under Australian conditions.〈section xml:id="abs1-2"〉〈title type="main"〉Résumé Stimulés par les résultats obtenus outre-mer en matière de photo aérienne en couleur, et disposant d'un potentiel adéquat, le Forests Commission, Victoria a entrepris en 1965 une série d'essais, dès le départ très encourageants. On décrit ici les essais d'évaluation de différents types de film (70 mm et 35 mm); le but était de se familiariser avec la couleur et d'en étudier les conditions d'emploi sous les latitudes australiennes.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungAngeregt durch erfolgversprechende Ergebnisse mit Farbluftbildern in Übersee und ermutigt durch die Möglichkeiten zur Lösung lokaler Probleme unternahm die Forstkommission in Viktoria (Australien) eine Reihe von Versuchen mit Farbaufnahmen im Jahre 1965. Diese Versuche erwiesen sich vielversprechend und wurden fortgesetzt. Im Artikel werden die Verfahren und Ergebnisse von Versuchen mit 70 mm und 35 mm Aufnahmen zur Bewertung verschiedener photographischer Materialien beschrieben. Ein wichtiges Ziel der Untersuchung war das Erlangen von Kenntnissen über die Verfahren zur Verwendung nichtkonventioneller panchromatischer Schwarz-Weiss-Filme und deren Bewertung unter australischen Bedingungen.
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  • 21
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1978), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 22
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1978), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 23
    Electronic Resource
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    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1978), S. 0 
    ISSN: 1477-9730
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    Topics: Architecture, Civil Engineering, Surveying
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  • 24
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    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1977), S. 0 
    ISSN: 1477-9730
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    Topics: Architecture, Civil Engineering, Surveying
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  • 25
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    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1977), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Professor F. Ackermann was specially invited to contribute an article to mark the 50th issue of The Photogrammetric Record. As the only photogrammetrist to have received both the Brock and von Gruber awards of the International Society for Photogrammetry, he is particularly well qualified to express his views on the past and future development of photogrammetry.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméLe professeur Ackermann a été invitéàécrire un article pour fêter la sortie du 50ème numéro. Seul photogrammètre cumulant médaille de Brock et médaille de von Gruber, il était particulièrement qualifié pour juger du passé et préjuger de l'avenir de la photogrammétrie.〈section xml:id="abs1-3"〉〈title type="main"〉Zusammenfassung Professor Ackermann wurde gezielt eingeladen, um einen Beitrag anlässlich des Erscheinens der 50. Ausgabe des Photogrammetric Record beizusteuern. Als einziger Photogrammeter, der sowohl den Brock- als auch v. Gruber-Preis der ISP erhalten hat, ist er besonders qualifiziert, seine Ansichten über Vergangenheit und Zukunft der Photogrammetrie zu äussern.
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  • 26
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    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 9 (1977), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: In 1976 the author succeeded the late Professor E. H. Thompson as editor of The Photogrammetric Record, having been assistant editor since 1965. Here he sets out, on the occasion of its 50th issue, some of the details which fashion the content and appearance of the Record.〈section xml:id="abs1-2"〉〈title type="main"〉Résumé En 1976 l'auteur devient, après feu le professeur Thompson, rédacteur en chef du Photogrammetric Record; il était son adjoint depuis 1965. A l'occasion du 50eme numéro, il expose les conceptions qui président au contenu et à l'aspect de la revue.〈section xml:id="abs1-3"〉〈title type="main"〉Zusammenfassung Im Jahre 1976 wurde der Autor Nachfolger von Professor E. H. Thompson als Redakteur der Zeitschrift Photogrammetric Record, nachdem er schon seit 1965 als stellvertretender Herausgeber tätig war. Anlässlich des Erscheinens des 50. Heftes beleuchtet er einige Einzelheiten, die Inhalt und Aufmachung des Record formen.
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  • 27
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    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 8 (1976), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Antarctica, with its vast areas of snow, presents unusual problems to the photogrammetrist and the cartographer. The paper describes two methods used by the Directorate of Overseas Surveys to overcome these problems and to produce 1: 250 000 scale mapping. The first part of the paper gives an account of the use which was made of tricamera photography, with particular emphasis on the adaptation of Williamson multiplex equipment to operate with the oblique elements of tricamera photography. The second part of the paper, after outlining some of the fundamental principles of ERTS 1 (Landsat) imagery, goes on to describe the application of these principles when utilising imagery in the production of much needed image and line maps of Antarctic areas. Accuracies achieved by the two methods and their relative economies are discussed.〈section xml:id="abs1-2"〉〈title type="main"〉Résumé L'Antarctique, avec ses vastes étendues de neige, pose des problèmes particuliers au photogrammètre et au cartographe. On décrit ici deux méthodes utilisées par le Directorate of Overseas Surveys pour produire la carte au 1: 250 000. La première consiste à employer pour la prise de vues une chambre triple, associée pour la restitution à un multiplex Williamson modifié pour I'exploitation des vues obliques. La deuxième consiste en une tentative d'utilisation des images satellitaires ERTS 1 (Landsat). On analyse Vexactitude et le prix de revient des deux méthodes.〈section xml:id="abs1-3"〉〈title type="main"〉Zusammenfassung Die Antarktis bietet dem Photogrammeter und Kartographen mit ihren riesigen Schneeflächen ungewöhnliche Probleme. Im Artikel werden 2 vom Directorate of Overseas Surveys angewandte Verfahren beschrieben, um diese Schwierigkeiten zu überwinden und Karten im Massstab 1: 250 000 herzustellen. Im 1. Teil der Arbeit wird über die Anwendung von Dreikammer-Aufnahmen berichtet, wobei insbesondere auf die Adaption des Williamson-Multiplexgerätes zur Auswertung der dabei mit aufgenommenen Schrägbilder eingegangen wird. Im 2. Teil des Artikels werden die grundlegenden Prinzipien der ERTS (Landsat)-Aufnahmen skizziert und deren Anwendung zur Herstellung der dringend benötigten Bild- und Linienkarten antarktischer Gebiete beschrieben. Die mit den beiden Verfahren erzielten Genauigkeiten und ihre relative Wirtschaftlichkeit werden diskutiert.
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  • 28
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    The @photogrammetric record 9 (1977), S. 0 
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    Notes: The author has been involved in the manufacture of photogrammetric instruments for nearly 30 years. In particular, he was associated with the Thompson-Watts plotter and, at the present time, is concerned with the production of the CP1 and EMPD instruments which owe a great deal to his design and innovatory skills. This paper summarises his experiences and views of the production of photogrammetric equipment in England.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméPendant 30 ans l'auteur a participéà l'élaboration d'appareillages pour la photogrammétrie: en particulier les restituteurs Thompson–Watts; et maintenant les appareils CP1 et EMPD qui lui doivent beaucoup. Il condense ici l'expérience et les idées qu'il a dans ce domaine.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungDer Autor ist seit fast 30 Jahren an der Herstellung photogrammetrischer Auswertegeräte beteiligt. Insbesondere verbunden war er mit dem Thompson–Watts Plotter und befasst sich gegenwärtig mit der Fertigung der Geräte CP1 und EMPD, an denen er durch seine schöpferischen Fähigkeiten grossen Anteil hat. In dem Artikel werden seine Erfahrungen und Ansichten bei der Produktion photogrammetrischer Geräte in England zusammengefasst.
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    Notes: The author is one of the members of the International Committee for Architectural Photogrammetry (CIPA) which met in London during European Architectural Heritage Year. He describes architectural applications of photogrammetry in Poland.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméL'auteur est membre du Comité International de Photogrammétrie Architecturale (C/PA) réuni à Londres à l'occasion de l'Année du Patrimoine Architectural Européen. Il donne des exemples d'applications de la photogrammétrie à l'architecture en Pologne.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungDer Autor ist eines der Mitglieder des Internationalen Komitees für Architekturphotogrammetrie (CIPA), das während des Europäischen Jahres für Denkmalpflege in London tagte. Er beschreibt Anwendungen der Photogrammetrie in der Architektur in Polen.
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    Notes: Le microscope électronique à balayage donne l'image de la surface d'un objet situé dans une boîte à spécimen où a été fait le vide. Un fin pinceau d'électrons balaie la surface synchroniquement avec un tube cathodique dont l'intensité est modulée en fonction du signal secondaire émanant du spécimen. Le système présente une grande profondeur de champ; on peut donc obtenir différentes perspectives du spécimen en le photographiant sous diverses inclinaisons (perspectives qui sont centrales, mais cependant justiciables d'être traitées comme parallèles pour de forts grandissements) et donc le restituer spatialement. On donne dans la première partie les limitations pratiques de l'appareillage, ainsi que le type et les causes de distorsion de l'image. Dans la deuxième partie, on décrit les caractéristiques d'un appareil de restitution adaptéà un cas standard: grandissement des deux clichés d'un stéréogramme: fixe-angle d'ouverture du faisceau perspectif négligeable (c'est le cas pour de forte grossissements) et convergence relative des deux positions de la plaque porte-spécimen est fixe.〈section xml:id="abs1-2"〉〈title type="main"〉Zusammenfassung Das Abtast-Elektronen-Mikroskop liefert Bilder der Oberfläche von Objekten, die sich in einer Vakuum-Kammer befinden. Ein feiner Elektronenstrahl tastet die Oberfläche in Synchronisation mit einer Kathodenstrahlröhre ab, deren Lichtpunkthelligkeit von dem sekundären Elektronensignal, das von der Probe ausgeht, moduliert wird. Das System gestattet eine grosse Schärfentiefe und erlaubt dadurch verschiedene Projektionen des zu photo-graphierenden Musters durch Neigung desselben zwischen aufeinanderfolgenden Aufnahmen. Aus der Kenntnis der Geometrie der Projektion (die eine Zentralprojektion ist, jedoch für sehr stark vergrösserte Bilder annähernd als Parallel- oder Orthogonalfall behandelt werden kann) ist es daher möglich, zu dreidimensionalen Analysen durch Messung von Parallaxen zu kommen. Teil I der Arbeit handelt von den praktischen Problemen, die sowohl aus den Grenzen für die mechanische Konstruktion von Muster-Halterungen und Auswertegeräten als auch den Verzerrungen der Bilder resultieren. Teil II beschäftigt sich mit praktischen Gesichtspunkten der bewährten Auswerteinstrumente, die speziell für die Lösung eines standard-isierten Problems der Elektronenmikroskopie konstruiert wurden. Bei diesen wird die Vergrösserung der beiden Halbbilder eines Stereobildpaars konstant gehalten, der Divergenzwinkel der peripheren “Strahlen”, die sich aus dem zentralen “Strahl” ergeben, wird als vernachlässigbar angesehen (was bei Bildern mit starker Vergrösserung der Fall ist) und die Neigungswinkeldifferenz zwischen den zwei Lagen der Probe ist konstant.
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    Notes: The article describes an experiment in which a production block of aerial triangulation, observed by the method of independent models, was repeatedly computed using differing amounts and configurations of control. The block was recomputed to investigate the effects of control errors, of dispensing with the tie strips and of applying different weights to control and tie points. The connexion between the quality of the join of individual models and that of the adjusted block was also investigated.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméOn décrit une série d'essais effectués sur un bloc de production de triangulation aérienne analytique traité par la méthode des modèles indépendants, destinés àétudier l'influence du nombre et de la configuration des points du canevas d'appui, l'effet d'erreurs sur les points d'appui, l'effet des bandes transversales, et du choix des poids pour les points d'appui et de liaison. On a aussi examiné la corrélation entre la qualityé de l'enchaînement des modèles individuels et celle du bloc compensé.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungBeschreibung eines Versuchs, bei dem ein Aerotriangulationsblock aus der Produktion, der nach der Methode der unabhängigen Bildpaare beobachtet worden war, wiederholt bei verschiedenen Anzahlen und Anordnungen von Passpunkten berechnet wurde. Die Berechnungen erfolgten zur Abschätzung der Einflüsse von Passpunktfehlern. Weiter wurde der Anschluss zu Nachbarstreifen und die Anwendung verschiedener Gewichte für Pass- und Verbindungspunkte untersucht. Desgleichen wurde der Zusammenhang zwischen der Qualität des Zusammenschlusses einzelner Modelle und der des ausgeglichenen Blockes untersucht.
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    Notes: A plot of relative parallax measurements in a student exercise is proposed for revealing errors in parallax bar readings taken from a stereo-pair of aerial photographs. The sensitivity of the computed heights to measurement error is also evaluated.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméOn propose un tracé graphique des mesures de parallaxe pour mettre en évidence des erreurs de lecture à la barre de parallaxe.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungEs wird eine Auswertung relativer Parallaxenmessungen bei einer studentischen Übung vorgeschlagen, um Fehler der an einem Stereomikrometer vorgenommenen Ablesungen aufzudecken, die an Hand eines Luftbildpaars erfolgten. Der Einfluss des Messfehiers auf den Höhenfehler wird ebenfalls abgeschätzt.
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    Notes: A stereoscopic pair of photographs, with a common ground principal point and a scale of approximately 1: 1, is produced by mounting specimens (grains of sand or similar material) on a microscope stage which is capable of being tilted to a selected angle under a camera fixed in a vertical attitude. The production of contour plans at an enlarged scale in a stereoplotter and from paper prints using simple apparatus is discussed.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméMicroscopie stéréophotogrammétrique: la plaquette porte-spécimen peut être inclinée d'un angle donné par rapport à l'axe optique de l'appareil photo. On examine les possibilités de restituer en courbes de niveau à partir d'un restituteur analogique normal et d'un restituteur simplifié.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungEin Stereobildpaar, in dem die Geländenadire abgebildet sind, wird im Masstab von etwa 1:1 durch Aufnahme von Proben (Sandkörner oder ähnliches Material) erhalten, die auf einem Mikroskopträger angeordnet sind, der unter einem vorgegebenen Winkel unter einer vertikal orientierten Kamera geneigt werden kann. Die Herstellung von Konturenplänen in vergrössertem Masstab mit Hilfe von Stereokartiergeräten und die Produktion von Papierabzügen mit einfachen Geráten wird diskutiert.
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    Notes: The nature of survey education varies considerably throughout the world and there are different views on the place which photogrammetry should occupy in the survey curriculum. The author considers the general question and makes some specific observations based on his experience of teaching photogrammetry in an Australian university.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméLa manière d'enseigner les techniques de levé varie beaucoup dans le monde, ainsi que les opinions sur la façon dont doit se situer la photogrammétrie parmi ces techniques. L'auteur, professeur de photogrammétrie en Australie, donne son avis.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungDer Inhalt der Ausbildung in Geodäsie variiert auf der Welt beträchtlich und es gibt verschiedene Ansichten, welche Stellung die Photogrammétrie in den Geodäsie-Lehrplänen einnehmen soll. Der Autor untersucht diese allgemeine Frage und stellt einige spezielle Betrachtungen an, die auf seiner Erfahrung beruhen, die er bei der Photogrammetrie-Ausbildung an einer australischen Universität sammeln konnte.
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    Notes: A great many papers have been written on aerial triangulation but in recent years they have tended to deal with the purely technical details of the methods of solution of large sets of equations. This paper is concerned with a review of the problem that has to be solved and gives an outline of some current methods. The author's views, which do not always agree with generally accepted notions, are an important part of the text.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméPresque tous les papiers publiés en aérotriangulation analytique depuis quelques années traitent de détails purement techniques des méthodes de résolution des grands systèmes linéaires. Dans ce papier au contraire on passe en revue les problèmes non resolus et on donne le principe de quelques méthodes courantes. L'auteur expose également un certain nombre d'idées parfois anti conformistes.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungUber die Aerotriangulation wurde ausserordentlich viel geschrieben, aber die in den letzten Jahren veröffentlichten Arbeiten tendierten dazu, die rein technischen Details der Verfahren zur Lösung grosser Gleichungssysteme zu behandeln. Die vorliegende Arbeit befasst sich mit einer Übersicht des zu lösenden Problems und gibt einen Überblick über einige gegenwärtig praktizierte Verfahren. Die Ansichten des Verfassers, die nicht immer mit den allgemein existierenden Vorstellungen übereinstimmen, sind ein wichtiger Teil des Artikels.
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    Notes: The paper describes the operation, output rate and uses of the G-2 Stereocord stereoplotter, made by Zeiss (Oberkochen) and designed for simple plotting work. The basic equipment of the Stereocord consists of an opto-mechanical unit for viewing and measuring stereopairs, the electronic Direc-1 unit for counting and displaying image co-ordinates x′ y′, px and a commercial desk calculator for computing the X, Y, H ground co-ordinates. With suitable programs that can be directly selected by pressing a key on the Direc unit, a multitude of calculations can be made in conjunction with calculator controlled measurement. A wide choice of peripheral units for the Stereocord and the desk calculator makes the equipment suitable for many different plotting jobs and above all when used in the point by point mode. As a result, the instrument will not only be of great use in quantitative photo-interpretation, but also in many areas of photogrammetric work which do not require the ultimate in precision.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméL'exposé décrit le Stereocord G-2 développé par Zeiss (Oberkochen) comme simple appareil stéréorestituteur. Il mentionne son principe de fonctionnement, son rendement et ses possibilités d'emploi. Le Stereocord G-2 se compose d'une unité de base optique-mécanique pour l'observation et la mesure des couples de clichés stéréoscopiques, d'une unitéélectronique Direc-1 pour le comptage et l'affichage des coordonnées-image x′ y′, px et d'un calculateur de table de type courant pour le calcul des coordonnées-terrain X, Y, H. Avec des programmes adéquats choisissables à partir de l'unité Direc-I au moyen d'une touche, on peut exécuter des multitudes de calculs à partir des valeurs que fournissent les mesures pilotées par le calculateur. De nombreuses unités périphériques sont disponibles pour le Stereocord G-2 et pour le calculateur de table. Elles offrent des possibilités de restitution très variées, la plupart point par point. Le Stereocord G-2 se révèle particulièrement utile pour les photointerprètes chargès de travaux quantitatifs, ainsi que pour les táches secondaires de la photogrammétrie〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungDie Abhandlung beschreibt das Handhaben, die Ausgabeart und die Anwendung des Zeiss (Oberkochen) Stereocord G-2. Das Grundgerät besteht aus einer optisch-mechanischen Einheit zum Beobachten und Messen von Stereogrammen, einer elektronischen Einheit Direc-1 zum Zählen und Anzeigen von Bildkoordinaten x′, y'und der Parallaxe px und einem handelsüblichen Tischrechner zum Berechnen der Landeskoordinaten X, Y, H. Mit entsprechenden Programmen, die über Programmtasten am Direc-1 aufgerufen werden, können eine Vielzahl von Berechnungen durchgeführt werden. Mit den entsprechenden Peripheriegeräten für den Tischrechner ist das Stereocord G-2 für viele Auswerteaufgaben geeignet, besonders auch für punktweise Auswertungen. Das Gerät kann daher nicht nur für quantitative Photointerpretation, sondern auch für viele photogrammetrische Aufgaben eingesetzt werden.
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    Notes: The scanning electron microscope forms images of the surfaces of objects located in a vacuum specimen chamber. A fine beam of electrons scans the surface in synchronism with a cathode ray tube whose spot brightness is modulated by the secondary electron signal emanating from the specimen. The system is capable of giving a large depth of focus and thus allows different projections of the specimen to be photographed by tilting the specimen between successive exposures. From a knowledge of the geometry of the projection (which is central or perspective, but may be justifiably treated as a parallel or orthogonal case for high magnification images), it is therefore possible to proceed to three dimensional analyses from the measurement of parallaxes. Part I of this paper deals with the practical problems resulting from mechanical design limitations of specimen stages and plotting instruments, as well as the nature and sources of image distortions. Part II deals with the practical features of the successful plotting instruments designed especially for the solution of a standardised scanning electron microscope problem in which the magnification of the two members of a stereoscopic pair of images is held constant, the angle of divergence of the peripheral “rays” of the projection from the central “ray” is assumed to be negligible (which is the case for high magnification images) and the tilt angle difference between the two specimen attitudes is constant.
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    Notes: Following a brief discussion of his current research interests in testing properties of materials and in model measurement, the author discusses the purpose and design of a test field for close range camera calibration.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméPolygones pour étalonnages de chambres à courte distance de prise de vue.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungNach kurzer Diskussion gegenwärtiger Forschungen zur Testung von Materialeigenschaften und zur Vermessung von Modellen diskutiert der Autor den Verwendungszweck und den Aufbau eines Testfeldes zur Kalibrierung von Aufnahmekammern für die Nahphotogrammetrie.
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    Notes: An honorary member and former president of the International Society for Photogrammetry looks back over the past sixty years and concludes with some questions on the future of photogrammetry.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméUn membre honoraire, ancien président de la SIP, considère soixante années de photogrammétrie, et pose quelques questions quant à son devenir.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungEin Ehrenmitglied und der frühere Präsident der Internationalen Gesellschaft für Photogrammetrie hält Rückblick auf die vergangenen 60 Jahre und schliesst mit einigen Fragen über die Zukunft der Photogrammetrie.
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    Notes: PHOTOGRAMMETRIC GUIDE. By J. Albertz and W. Kreiling. Second edition. H. Wichmann Verlag, Karlsruhe, 1975.ELEMENTS OF PHOTOGRAMMETRY. BY P. R. Wolf. MCGRAW-HILL, 1974.REMOTE SENSING: TECHNIQUES FOR ENVIRONMENTAL ANALYSIS. Edited by J. E. Estes and L. W. Senger. Hamilton Publishing Company, Santa Barbara, California, 1974.AN APPRAISAL OF PHYSIOGRAPHIC UNITS FOR PREDICTING SITE CONDITIONS IN ARID AREAS. By R. M. S. Perrin and C. W. Mitchell. Military Vehicles and Engineering Establishment, Christchurch, Hampshire,1969 and 1971.
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    Notes: All methods of aerial triangulation are applied in the United States, including independent models, strip adjustments, block adjustments, the bundles method and mixed systems. Seven private firms advertise that they perform analytical aerial triangulation exclusively and 24 others indicated that the practice is included as part of their mapping functions. The bundles system of the National Ocean Survey serves as a detailed example of one system; a new long term effort has begun to reduce the resultant error on the ground to ± 30 mm as an adjunct to geodetic control surveys.〈section xml:id="abs1-2"〉〈title type="main"〉RésuméToutes les méthodes d'aérotriangulation analytique sont appliquées aux Etats-Unis: modèles indépendents, compensation par bandes, compensation par blocs, par faisceaux, et méthodes mixtes. Sept entreprises privées se consacrent exclusivement aux travaux d'aérotriangulation analytique, et 24 autres l'emploient. On décrit à titre d'exemple, la méthode de compensation par faisceau du National Ocean Survey; on s'est récemment fixé comme but à long terme de réduire les erreurs de détermination au sol à± 30 mm de façon à assurer l'homogénéïté avec les levés géodésiques.〈section xml:id="abs1-3"〉〈title type="main"〉ZusammenfassungIn den USA werden alle Verfahren der Aerotriangulation angewendet, wie die Methode der unabhängigen Modelle, Streifenausgleichungen, Blockausgleichungen, die Bündelmethode und kombinierte Systeme. Sieben Privatfirmen annoncieren, dass sie ausschliesslich analytische Aerotriangulationen ausführen und 24 andere, dass die Aerotriangulation Bestandteil der Kartenherstellung ist. Die beim National Ocean Survey praktizierte Bündelmethode dient als Beispiel für ein System. Auf Grund längerer Bemühungen konnte der Fehler im Gelände auf ± 30 mm reduziert werden, wodurch die Aerotriangulation zur geodätischen Punktbestimmung genutzt werden kann.
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    Notes: Book Reviewed in this article:THE NATIONAL GRAVITY REFERENCE NET 1973 (NGRN73). By D. Masson Smith, P. M. Howell, A. B. D. E. Abernethy-Clark and D. W. Proctor (Editor). Ordnance Survey Professional Paper No.THE PRECISE ALIGNMENT SURVEY OF A 5 KM RADIO TELESCOPE AERIAL ARRAY FOR THE CAVENDISH LABORATORY, CAMBRIDGE UNIVERSITY. By W. J. Preiss, D. W. Proctor and P. E. Haywood. Ordnance Survey Professional Paper No.REMOTE SENSING EVALUATION FLIGHTS, 1971. Part 1 edited by L. F. Curtis and A. Mayer; Part 2 edited by J. G. W. Greenwood.PHOTO-HYDROLOGICAL RECONNAISSANCE SURVEYS. By A. M. J. Meijerink.EVIDENCE IN CAMERA. The story of photographic intelligence in World War II. By C. Babington Smith.STABILIZATION OF PHOTOGRAPHIC SILVER HALIDE EMULSIONS. By E. J. Birr.
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    Notes: Review the present position of control by photogrammetric methods, and discuss in the light of possible developments in apparatus and techniques the extent to which you think ground traverse and triangulation can be superseded.
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    Notes: The problem of relative orientation involves the determination of the elements of at least one orthogonal matrix. Hitherto a difficulty has arisen in that, in this context, orthogonal matrices have not been expressed in terms of three independent parameters without the use of circular functions. In this paper a more tractable form of the orthogonal matrix is used to set up a rational algebraic equation expressing the relative orientation condition. This equation turns out to be of the third order in the five unknowns. A set of such equations may be solved by a rapidly converging process of iteration.
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    Notes: The theory of errors, so widely used in photogrammetric work, is based on the mathematics of statistics. Two statistical theorems, the central limit theorem and the arc sine law theorem, are briefly discussed and the lessons which may be drawn from them are found to be highly applicable to photogrammetric operations.
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    Notes: Book Reveiwed in this article:AN OUTLINE OF PHOTOGRAMMETRY. By K. Schwidefsky.
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    Notes: The various forms of image movement to which an airborne camera is subject are discussed. The likely magnitudes of these movements and the acceptable tolerances for such movements are indicated. Possible remedies are mentioned.
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    Notes: The paper describes a problem in land tenure survey current in the Kigezi District of Uganda, East Africa. The two authors, one from a commercial air survey organisation, the other from the government department concerned, comment on methods adopted and difficulties experienced both in field survey and adjudication, and in aerial photography and photogrammetric plotting.
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    Notes: A review of progress and the present technical status in air photography. While the pioneering developments were on sound lines, scientific investigation gave a better understanding of fundamentals and paved the way for the advance to present higher standards. Advances in lenses and emulsions are considered and future prospects discussed. It is stressed that attention must be given to image movements of all kinds if potentially higher resolving-power is to be realised in practice. Improvements are seen to be necessary in several directions, e.g. film flattening in the camera, filter glass transmission, processing equipment and film distortion. It is pointed out that while full advantage should continue to be taken of possibilities offered by other technologies, e.g. electronic printing aids, as a recording medium for air survey photography has unique qualities and is unlikely to be replaced.
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