Pyroelectric camera signal processing having interrelated multi-

Details Pyroelectric camera signal processing having interrelated multi- Pyroelectric camera signal processing having interrelated multi-

1987-09-11

1988-04-26

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

250333, 358163, H04N 533

Patent

active

047408405

ABSTRACT:
A system and method are disclosed for pyroelectric camera signal processing, which processing includes multi-parameter automatic signal level adjustment to compensate for the effects of pedestal level variations. The pyroelectric vidicon tube generates an electrical output signal component indicative of target signal information based upon the sensed thermal energy emitted from the target, and also generates a pedestal component around which the target signal information is centered, and this information is processed to provide field video signals which are utilized to provide a composite video output. An automatic adjustment control unit, responsive to the field video signal, provides automatic adjustment of gain, balance, and offset to thereby allow the pyroelectric camera to operate at an optimized signal-to-noise ratio.

REFERENCES:
patent: 4481535 (1984-11-01), Hodd
patent: 4686566 (1987-08-01), Bucher
patent: 4694334 (1987-09-01), Bucher

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