Method for determining the angular dimensions of a scene recorde

Details Method for determining the angular dimensions of a scene recorde Method for determining the angular dimensions of a scene recorde

1986-06-27

1987-09-22

Rubinson, Gene Z.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358107, 358139, 358183, H04N 5272, H04N 5225

Patent

active

046958924

ABSTRACT:
A method of calibrating a video system, which includes a video camera hav a lens for viewing a scene and a video recorder for recording the scene on video tape, to determine both vertical and horizontal angular dimensions of the scene. The video camera lens is focused for infinity and an image of an illuminated reticle pattern of known angular shape and size formed at infinity is projected into the video camera lens and recorded on the video tape by the video recorder. The optical device used to project the reticle pattern image is similar to known projection systems of certain types of gunsights.

REFERENCES:
patent: 3612760 (1971-10-01), McKechnie
patent: 4326219 (1980-04-01), Griesshaber
patent: 4396944 (1983-08-01), McKennie

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