Vector lock-in imaging system

Details Vector lock-in imaging system Vector lock-in imaging system

1988-06-02

1989-10-31

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358110, 358111, 358113, H04N 514, H04N 530

Patent

active

048781169

ABSTRACT:
The assembly (10) is a real-time imaging device for detecting radiation from an object field which is periodic in time. A video camera (14) detects emitted and reflected radiation from the object field (12) and produces a video signal comprising a series of pixels representing a frame of the image. The video signal is digitized (18) and received by a processor (16). The processor (16) averages the successive frames as in-phase images and quadrature images based on the periodicity of the object field to eliminate unsynchronous noise from the image and to display an image synchronous with the periodicity.

REFERENCES:
patent: 4409615 (1983-10-01), McMann, Jr. et al.
patent: 4458267 (1984-07-01), Dolazza
patent: 4636850 (1987-01-01), Stewart

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