MONITORING DEFORMATIONS OF STRUCTURES

A mathematical model has been established for photogrammetric measurement of structural deformations. The model adjusts simultaneously ground-measured orientation elements and photogrammetrically obtained plate coordinates by means of least squares. The computed variance and covariance matrices are used to detect errors as well as to show the interaction between variables. A computer-generated structure is used to establish standards for ground and photogrammetric measurements. This generated structure gives a guideline for the procedure of field measurements. The system has achieved a high degree of accuracy and is capable of accepting five convergent photographs taken from terrestrial or aerial stations with 100 per cent overlap. /Author/

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  • Supplemental Notes:
    • Presented at the International Symposium on Close Range Photogrammetric Systems, Univ. of Illinois, Aug. 1975.
  • Corporate Authors:

    American Society of Photogrammetry

    105 North Virginia Avenue
    Falls Church, VA  USA  22046
  • Authors:
    • Erlandson, J P
    • Veress, S A
  • Publication Date: 1975-11

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Filing Info

  • Accession Number: 00128479
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 14 1976 12:00AM