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PHOTOGRAMMETRY IN THE RANGE 300 MM TO 3000 MM: TECHNIQUES AND APPLICATIONS IN THE ELECTRICITY SUPPLY INDUSTRY
Author(s) -
Clayton R.
Publication year - 1989
Publication title -
the photogrammetric record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 51
eISSN - 1477-9730
pISSN - 0031-868X
DOI - 10.1111/j.1477-9730.1989.tb00645.x
Subject(s) - photogrammetry , calibration , range (aeronautics) , mains electricity , electricity , computer science , baseline (sea) , mechanical engineering , environmental science , remote sensing , engineering , geology , electrical engineering , artificial intelligence , physics , aerospace engineering , quantum mechanics , voltage , oceanography
A review is provided of the techniques and applications of very close range photogrammetry to engineering measurements in the electricity supply industry. Starting from a definition of very close range photogrammetry by consideration of depth of field, the techniques of measurement in the range 300 mm to 3 m are discussed with an analysis of four practical examples; two examples relate to the confirmation of continued structural integrity of nuclear reactor components by remote photogrammetric measurement, one uses the technique for measuring creep stress for component life assessment and one uses it for the baseline measurements of insulation coverplates in a nuclear reactor pressure vessel. Emphasis is given to the mathematical modelling of the cameras employed and their subsequent calibration. The development of a universal calibration facility for all cameras working in this range is described.