LENS CHARACTERISTICS AS RELATED TO MODEL FLATNESS

STEREOMODEL DEFORMATIONS WHICH ARE DIRECTLY ATTRIBUTABLE TO OPTICAL CHARACTERISTICS OF ANY PART OF A LENS SYSTEM ARE NOTABLY OF A SYSTEMATIC NATURE. ALTHOUGH THESE ERRORS MAY BE WITHIN THE USUAL SPECIFICATIONS FOR CONTOURS (90 PERCENT WITHIN 1/2 CONTOUR INTERVAL), THEIR SYSTEMATIC TREND CAN CONCEIVABLY HAVE A SIGNIFICANT INFLUENCE IN THE CALCULATION OF EARTHWORK QUANTITIES FROM HIGHWAY DESIGN MAPS. AN ANALYTICAL STUDY HAS BEEN CONDUCTED TO ASCERTAIN THE EFFECT OF INDIVIDUAL OPTICAL ELEMENTS OF THE LENS SYSTEM, INCLUDING CAMERA LENSES, PROJECTION LENSES, AND DIAPOSITIVE GLASS. BECAUSE OF ITS EXTENSIVE USE IN HIGHWAY DESIGN MAPPING, THE STUDY HINGES ON KELSH-TYPE PLOTTING INSTRUMENTS. IN CONJUNCTION WITH THESE INSTRUMENTS, SUCH CAMERA LENSES AS THE METROGON, AVIOGON, PLEOGON, AND PLANIGON ARE DISCUSSED. PROCEDURES FOR TESTING PLOTTING EQUIPMENT AND ISOLATING CAUSES OF DEFORMATION ARE OUTLINED. DATA ARE DERIVED FOR COMPENSATION OF COMBINED DISTORTION, WITHIN MINIMUM TOLERANCES, FOR THE RESTITUTION OF STEREOMODELS RELATIVELY FREE FROM DEFORMATIONS CAUSING SYSTEMATIC ERRORS. /AUTHOR/

Media Info

  • Monograph Title: Photogrammetry: developments and applications, 1960
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00202682
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 19 1994 12:00AM