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/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/283/283-001.pdf
• Supplemental Notes:
  • No 283, pp 1-24, 24 FIG, 6 TAB, 14 REF 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:
  • Katibah, G P
• Conference:
  • 39th Annual Meeting of the Highway Research Board
  • Location: Washington DC, United States
  • Date: 1960-1-11 to 1960-1-15
• Publication Date: 1961

Media Info

• Media Type: Digital/other
• Pagination: 24p
• Monograph Title: Photogrammetry: developments and applications, 1960
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 283
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Cameras; Deformation; Errors; Highway design; Lenses (Optics); Maps; Mathematical models; Optical devices; Optical distortion; Optical properties
• Uncontrolled Terms: Models
• Old TRIS Terms: Distortion /optical/; Kelsh plotter; Optical lenses; Optical unit; Plotting
• Subject Areas: Design; Highways;

Filing Info

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