floating mark

floating mark
A mark seen as occupying a position in the three-dimensional space formed by the stereoscopic fusion of a photograph and used as a reference mark in examining or measuring the stereoscopic model. The marks may be formed by one real mark lying in the projected object space or by two real marks lying in the projected or virtually projected spaces of two photographs. These marks also may be formed by two real marks lying in the planes of the photographs themselves or by two virtual marks lying in the image planes of the binocular-viewing apparatus.
The principle of the floating mark. If the mark in the left of diagram is adjusted on the point m3, m1 and m2, the observer perceives it as if the floating mark were moved to the points M3, M1 and M2. The mark on the right is assumed to be constant. The floating mark chiefly moves vertically but also laterally.

Aviation dictionary. 2014.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Mark Guglielmo — mug shot of Guglielmo Born 12 December 1968 (1968 12 12) (age 42) Westchester County, New York, United States …   Wikipedia

  • Mark McCammon — Personal information Full name Mark Jason McCammon[1] …   Wikipedia

  • Mark Twain: The Musical — is a stage musical biography of Mark Twain that had a ten year summertime run in Elmira, NY and Hartford, CT (1987 1995) and was telecast on a number of public television stations.[1][2 …   Wikipedia

  • Mark IX tank — Mark IX Mark IX Specifications Weight …   Wikipedia

  • Mark Sergeev — (1926 1997) (Russian: Марк Сергеев) was a Russian poet. As the writer Mark Sergeev is known by the books of Rail tracks, A Ballad about poplars, Carving, Connection of times, Evening birds. About 20 poetic collections, issued in our country and… …   Wikipedia

  • Mark Crilley — Born 21 May 1965 (1965 05 21) (age 46) Michigan, Indiana, United States Occupation Artist, illustrator, cartoonist, and fiction writer Nationality American Notable work(s) …   Wikipedia

  • Mark Foo — Personal information Born February 5, 1958 Singapore Died December 23, 1994( …   Wikipedia

  • Mark Altman (speaker) — Mark Altman Born 7 February 1965 (1965 02 07) (age 46) Brea, California Occupation United States Army Officer, Adventurer, Educator, Columnist, Author and Speaker Nationality …   Wikipedia

  • Mark Baltin — is an American linguist and member of the faculty of New York University. Originally from the Mount Airy section of Philadelphia, Pennsylvania, he attended Central High School. He received his BA in Linguistics in 1971 at McGill University, his… …   Wikipedia

  • Mark Roberts (streaker) — Mark Roberts is a British streaker who has run naked during several international events. A father of three, Roberts streaking began when he saw a female streaker run naked down a 1993 Rugby Sevens game in Hong Kong. After a bet in a bar, he went …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”