Duo-frame normalization technique

Details Duo-frame normalization technique Duo-frame normalization technique

1994-05-17

1995-07-18

Britton, Howard W.

Television

Back scatter reduction

H04N 718

Patent

active

054346126

ABSTRACT:
A duo-frame normalization technique and system for use in range gate imag to determine a range coded image by use of two image frames. A transmitter emits a modulated energy pulse which is not gated when received by a single gated imaging camera to obtain an integrated first image frame and gated by the same camera when received as an integrated second image frame. The second integrated frame is divided by the first integrated frame to yield a range coded pixel intensity image. Three gated imagining cameras can also be used that share common imaging optics via filters and beam splitters so as to compensate for phenomenological issues that can vary the signals from one frame to another and lead to degraded range images.

REFERENCES:
patent: 4839569 (1989-06-01), Dallin, II
patent: 4915498 (1990-04-01), Malek
patent: 5013917 (1991-05-01), Ulich
patent: 5056914 (1991-10-01), Kollodge

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