Method and system for real time offset correction in a large are

Details Method and system for real time offset correction in a large are Method and system for real time offset correction in a large are

1994-07-07

1995-09-19

Porta, David P.

X-ray or gamma ray systems or devices

Electronic circuit

With display or signaling

378 9812, 378207, H05G 164

Patent

active

054523389

ABSTRACT:
Offset signals are removed from an incoming x-ray image produced by a large area solid state x-ray detector. A sequence of incoming dark images from the detector, when the detector is not exposed to x-rays, is recursively filtered to generate a low-noise, continuously-updated offset image. This low-noise continuously-updated offset image is stored in an offset image memory. The image in memory is subtracted from the incoming x-ray image to create a corrected image when the detector is exposed to x-rays.

REFERENCES:
patent: 5038369 (1991-08-01), Nishiki
patent: 5296937 (1994-03-01), Nakatani et al.

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