USGS AUTOMATIC ORTHOPHOTO SYSTEM

AN ADVANCED SYSTEM FOR PRODUCING ORTHOPHOTOGRAPHS HAS BEEN DESIGNED AND FABRICATED BY THE U. S. GEOLOGICAL SURVEY. THE SYSTEM CONSISTS OF INSTRUMENTATION FOR DERIVING PROFILES IN A STEROSCOPIC MODEL BY MANUAL OR AUTOMATIC MEANS, FOLLOWING THESE PROFILES AUTOMATICALLY, AND TRANSMITTING SCANNING MOTIONS TO AN OFF-LINE ORTHOPHOTOSCOPE. THE ANALOG PROFILER HAS BEEN DESIGNED AND FABRICATED FOR MANUAL SCANNING AND RECORDING TERRAIN PROFILES IN A STEREOSCOPIC MODEL FORMED BY A DIRECT-PROJECTION STEREOPLOTTER. AN AUTOMATIC PHOTOGRAPHIC TECHNIQUE FOR RECORDING MULTIPLE TERRAIN PROFILES FROM A STEREOSCOPIC MODEL IS UNDER DEVELOPMENT. THE AUTOLINE (AUTOMATIC LINE FOLLOWER) USES ANALOG PROFILES, DERIVED EITHER MANUALLY OR AUTOMATICALLY, AS A MEANS OF CONTROLLING THE SCANNING MOTIONS OF THE ORTHOPHOTOMAT. THE AUTOLINE FOLLOWS PROFILES BY MEANS OF TWO CADMIUM SULFIDE PHOTOCELLS MOUNTED SIDE-BY-SIDE TO STRADDLE THE PROFILE. THE ORTHOPHOTOMAT IS A SINGLE-PROJECTOR INSTRUMENT FOR OFF-LINE AUTOMATIC PRODUCTION OF ORTHOPHOTOGRAPHS. /AUTHOR/

  • Supplemental Notes:
    • Vol 37, No 10, PP 1055-1062, 7 FIG
  • Authors:
    • Hughes, T A
    • Shope, A R
    • Baxter, F S
  • Publication Date: 1971-10

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Filing Info

  • Accession Number: 00202947
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 20 1971 12:00AM