Method and appartus for automatically calibrating cameras used f

Details Method and appartus for automatically calibrating cameras used f Method and appartus for automatically calibrating cameras used f

1993-03-12

1995-01-31

Coles,, Sr.,

Facsimile and static presentation processing

Facsimile

Facsimile measuring, testing, or calibrating

358504, 358400, H04N 100, H04N 146

Patent

active

053862996

ABSTRACT:
A moveable member which is moveable between first and second positions relative to an optical axis of an imaging camera is used to calibrate the camera. The moveable member has a first reference member positioned at the optical axis when the moveable member is in the first position, and has a second reference member positioned at the optical axis when the moveable member is in the second position. A preferred embodiment has a first calibration device for a front camera and a second calibration for a rear camera when both the front and the rear of the document are to be imaged. A single actuator is used to simultaneously move both moveable members of the first and second calibration devices between the positions mentioned.

REFERENCES:
patent: 3816659 (1974-06-01), Landsman
patent: 5099341 (1992-03-01), Nosaki et al.
patent: 5124810 (1992-06-01), Seto
patent: 5181104 (1993-01-01), Sugishima et al.
patent: 5237172 (1973-08-01), Lehman et al.

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