TELEVISION DISPLAYS OF TOPOGRAPHIC MAPS

TELEVISION IS IDEALLY SUITED AS A COCKPIT DISPLAY DEVICE IN AIR NAVIGATION AND AS A REAL-TIME COMMUNICATION LINK IN A TOPOGRAPHIC DATA BANK. RESOLUTION AND GEOMETRIC FIDELITY ARE THE TWO CRITICAL FACTORS THAT MUST BE CONSIDERED IN THE DESIGN OF A TV SYSTEM FOR DISPLAYING TOPOGRAPHIC INFORMATION. EXPERIMENTAL STUDIES SHOWED THAT A DISPLAY SCALE OF 8 TV-LINES/MM. ON THE MAP SAMPLE WOULD BE NEEDED TO DISTINGUISH THE FINE DETAILS IN THE TV DISPLAY. ALTHOUGH THE GEOMETRIC DISTORTIONS IN A CONVENTIONAL TV SYSTEM MAY AMOUNT TO 7.4 TV LINES AT ONE SIGMA LEVEL, AN ACCURATE DISTORTION MAP OF THE DISPLAY CAN BE OBTAINED BY A PHOTOGRAMMETRIC CALIBRATION PROCEDURE. /AUTHOR/

• Supplemental Notes:
  • pp 403-424, 8 FIG, 1 TAB, 4 REF
• Authors:
  • WONG, K W
  • Yacoumelos, N G
• Publication Date: 1971-3

Media Info

• Serial:
  • Surveying and Mapping
  • Publisher: American Congress on Surveying and Mapping

Subject/Index Terms

• TRT Terms: Calibration; Computer graphics; Geometry; Photogrammetry; Television; Topographic maps
• Uncontrolled Terms: Resolution
• Subject Areas: Design; Highways;

Filing Info

• Accession Number: 00202928
• Record Type: Publication
• Report/Paper Numbers: pp 782-785
• Files: TRIS
• Created Date: Aug 8 1971 12:00AM