113:. Fields of study feature specific targets, such as vessels in navigation, marker flags or natural features in surveying, celestial objects in astronomy, and so on. To have optimal observational outcome, it is preferable to have a completely unobstructed sightline.
62:. The subject may be any definable object taken note of or to be taken note of by the observer, at any distance more than least distance of distinct vision. In
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can cause distortion. Shadows, patterns and movement can also influence line of sight interpretation (as in
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Mamassian, Pascal; Knill, David C.; Kersten, Daniel (1998-08-01).
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Unobstructed line between an observer and a subject of interest
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309:"Physics Tutorial: Reflection of Light and Image Formation"
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by which the observed object is seen travels as a straight
220:"What is Lens Distortion Correction | How Does LDC Work?"
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196:"What is line of sight (LOS) and why is it important?"
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163:Line-of-sight velocity
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182:References
40:sight line
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95:refracted
87:reflected
52:spectator
42:), is an
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339:Geometry
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