Research Article
Nov 1971
Television Display of Topographic Maps
Authors: Kam W. Wong, AM.ASCE, and Nick G. YacoumelosAuthor Affiliations
Publication: Journal of the Surveying and Mapping Division
Volume 97, Issue 2
Abstract
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 per 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.
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Information
Published In
Journal of the Surveying and Mapping Division
Volume 97 • Issue 2 • November 1971
Pages: 273 - 285
Copyright
© 1971 American Society of Civil Engineers.
History
Published in print: Nov 1971
Published online: Feb 12, 2021
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Authors
Affiliations
Kam W. Wong, AM.ASCE
Asst. Prof. of Civ. Engrg., Univ. of Illinois, Urbana, Ill.
Nick G. Yacoumelos
Research Asst., Dept. of Civ. Engrg., Univ. of Illinois, Urbana, Ill.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
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