Method and means for compensating for image motion in an aerial

Details Method and means for compensating for image motion in an aerial Method and means for compensating for image motion in an aerial

1983-06-29

1985-03-19

Perkey, William B.

354 71, G03B 3904

Patent

active

045055599

ABSTRACT:
The invention contemplates image-motion compensation in an aerial camera in which the slot of a focal-plane shutter (11) moves in a direction transverse to the direction of film (6) transport, and in which film transport is parallel to the direction of flight. In order to compensate for the component of image-motion which is dependent on the field angle and which occurs with laterally inclined displacements of the camera, the slotted shutter (11) is coupled with an encoder (17) which in the course of making the exposure reports to a computer (12) the instantaneous field position (x) of the shutter slot. This computer (12) also determines a speed profile (A, B) in the interval between successive exposures the speed profile being derived from ground-clearance altitude h, flight velocity V.sub.F, focal length f, angle of swing .beta.', and a basic function which is dependent on the type of lens. The computer interprets the feed back signal from the encoder (17) against the speed profile to determine a control signal to regulate the film drive (7, 8).
The single lens (5) of the camera can be replaced by a multiple-lens configuration (35), with the fields of the individual lenses in lateral overlap or adjacency to produce wide-angle coverage, in which case the single slot of a single focal-plane shutter may scan all the fields of the individual lenses in a single exposure sweep.
For the situation in which a lens or lenses must be changed for adaptation to particular requirements, the lens mounts are coded with lens data, and a code reader (41) coupled to the lens mount provides input data to the computer for selection of the corresponding basic function stored in the computer for the calculation of the speed profile (A, B).

REFERENCES:
patent: 2599517 (1952-06-01), Raspet

Affiliated with

Also associated with

Rating

Method and means for compensating for image motion in an aerial does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and means for compensating for image motion in an aerial , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and means for compensating for image motion in an aerial will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-750071