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  • Articles  (23)
  • Blackwell Publishing Ltd  (23)
  • American Meteorological Society
  • Annual Reviews
  • 1960-1964
  • 1955-1959  (23)
  • 1957  (23)
  • Architecture, Civil Engineering, Surveying  (23)
Collection
  • Articles  (23)
Publisher
Years
  • 1960-1964
  • 1955-1959  (23)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    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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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: This paper describes a method of aerial triangulation with convergent obliques that depends upon a computational rectification of the obliques through their nominal tilts and then proceeding as if the photographs were verticals. A solution is given to the problem of relating the two cameras carried in the aircraft.
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: This article describes and explains the Resolution on Sign Convention approved at the Stockholm Congress. The advantages that result from adopting the convention are set out. The more complex problem of a notation for rotations (tilts) is then discussed and some proposals made. The article concludes by suggesting some alternatives for the words “tip,”“tilt” and “swing” as applied to air photographs.
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Geodetic adjustments owe their efficiency to the many rigorous conditions which have to be satisfied. At present these conditions are not available in aerial triangulations. They can be introduced into aerial triangulation, but only at the expense of much higher costs in all stages of the work. Their introduction seems to depend on the use of transverse tie-strips, or deep lateral overlap in the main strips of the air survey block. The conditions are stated here in terms of the entities which appear in analytical aerial triangulations.
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Up to now the accuracy of a photogrammetric process has been determined for the procedure as a whole. Special tests have been arranged by the I.S.P. and the O.E.E.P.E. but also in these cases only the final accuracy seems to be tested.In this paper the test procedure is treated from the point of view of the fundamental operations. The principles for the distinction between systematic and accidental errors of the fundamental operations are demonstrated. The error propagation of the accidental errors to the final co-ordinates is demonstrated in formulae for some cases which are of particular practical interest. In this way the accuracy determination of the photogrammetric procedure may be considerably facilitated. From simple y-parallax measurements the probable accuracy of each individual model can be determined.The principles have been applied to the well known controlled tests which have been arranged by the International Society for Photogrammetry on the Swiss test area Oberriet.Finally, some results of especially performed determinations of standard errors of y-parallax measurements in different aerial pictures are demonstrated.
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), 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 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
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  • 11
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: The conventional treatment of lens theory in photogrammetric textbooks is based upon over-simplified notions of how an objective functions. Modifications to take account of distortion inevitably lead to the introduction of an arbitrary parameter, the calibrated principal distance, which prevents the adoption of universal specifications for cameras and leads to confusion about the meaning of lens distortion. This paper sets out a treatment that confines itself to the geometrical characteristics of the picture and, with one minor exception (Appendix 3), avoids discussion of the mechanism of image formation. This enables a logical theory to be built up, independent of arbitrary parameters and the design of particular lenses, and, furthermore, allows constructional defects and errors of observation in calibration to be included naturally.The paper falls into two parts, camera calibration and the problem of internal orientation, the successful solution of which is the ultimate object of calibration. The paper ends with a general treatment of transformation printers.
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  • 13
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: The edge sharpness technique is explained. An experiment is described in which the technique is used to make a comparative study of image quality on three different types of film exposed from the air in the same camera. At the same time it was found possible to determine the decay of the image due to the effects of camera instability. The relative speeds of the three films were also obtained.
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  • 14
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: A reference in a recent publication points to strong positive error-correlations for neighbouring points in stereocomparator measures. An examination of modern Ordnance Survey observations shows that the correlations now present are of a residual and erratic nature, and are therefore not such that they can be taken into account conveniently in any scheme of statistical control. Some non-physical sources of correlation are noted in the data-reduction processes.
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  • 15
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
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  • 16
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: The Airborne Profile Recorder is explained and two experiments with it are described.In the first experiment the equipment was used in the aircraft during exposure of the survey photographs. A distance of 200 miles was bridged without appreciable scale error and with only small and random height errors down the central section. The experiment confirms the work of Mr. Blachut of the National Research Council using the same photographs, but does not provide any additional information with regard to the use of the technique under different conditions or in relation to any particular production requirements.In the second experiment the equipment was flown after the photographic survey, down the lateral overlaps of the photographic strips. It is concluded that this is an uneconomical method of using the equipment and unlikely to give results comparable with the first method.
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  • 18
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
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  • 19
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Type of Medium: Electronic Resource
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  • 21
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), 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 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
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  • 23
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @photogrammetric record 2 (1957), S. 0 
    ISSN: 1477-9730
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Book Reviewed in this article:OBSERVATIONAL ERRORS. By E. W. Anderson and J. B. Parker.ERRORS OF OBSERVATION AND THEIR TREATMENT. By J. Topping.
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