ANALYTICAL AERIAL TRIANGULATION FOR LARGE-SCALE PHOTOGRAPHY

A SUMMARY IS PRESENTED OF AN INVESTIGATION INTO VARIOUS FACETS OF ANALYTICAL TRIANGULATION. EXAMINATION OF 2-PHOTO, 3-PHOTO, AND SIMULTANEOUS SOLUTIONS SHOWED THAT THE TRIPLET APPROACH WAS MOST SUITABLE FOR THE PURPOSE. MONOCULAR AND STEREOSCOPIC APPROACHES WERE EQUALLY EFFECTIVE, THE FORMER BEING MUCH LOWER IN COST. EXPERIMENTS WITH VARIOUS DENSITIES AND DISTRIBUTIONS OF GROUND CONTROL SHOWED THESE TWO VARIABLES TO BE EXTREMELY IMPORTANT. USE OF A MINIMUM OF THREE CONTROL POINTS AT BOTH ENDS OF THE BRIDGES STRIP OR SUBSTRIP IS RECOMMENDED, POSITIONED TRIANGULARLY SO THAT TWO POINTS FALL ALONG A LINE APPROXIMATELY PERPENDICULAR TO THE STRIP AXIS AT ONE SIDE OF THE STEREOSCOPIC MODEL AND THE THIRD NEAR THE CENTERLINE OF THE STRIP NEAR THE OPPOSITE SIDE OF THE MODEL. A BRIDGING DISTANCE OF NOT MORE THAN SIX STEREOSCOPIC MODELS IS RECOMMENDED. EXTREME CARE MUST BE TAKEN IN TRANSFERRING PHOTOGRAPHIC POINTS, ESPECIALLY IN THE MONOCULAR APPROACH.

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  • Supplemental Notes:
    • Paper sponsored by Committee on Photogrammetry and Aerial Surveys and presented at the 49th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
  • Authors:
    • Knowles, David R
  • Publication Date: 1970

Media Info

  • Media Type: Digital/other
  • Features: Figures;
  • Pagination: pp 3-15
  • Monograph Title: Application of aerial surveys and photogrammetry
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00203510
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Dec 28 1970 12:00AM