true horizon


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true horizon

[′trü hə′rīz·ən]
(optics)
The boundary of a horizontal plane passing through a point of vision, or in photogrammetry, the perspective center of a lens system.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

true horizon

i. The boundary of a horizontal plane passing through a point of the observer's vision.
ii. In photogrammetry, the boundary of a horizontal plane passing through the perspective center of a lens system.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved