X-ray examination apparatus and means for noise reduction for us

Details X-ray examination apparatus and means for noise reduction for us X-ray examination apparatus and means for noise reduction for us

1993-07-12

1995-11-14

Porta, David P.

X-ray or gamma ray systems or devices

Electronic circuit

With display or signaling

36441313, H05G 164

Patent

active

054673801

ABSTRACT:
Noise reduction for use in an x-ray examination apparatus is provided for performing weighted temporally averaging in dependence on an amount of motion in parts of successive x-ray images. Further noise reduction is performed by combining temporal averaging with spatial filtering and motion detection. This reduces both noise breakthrough and the occurrence of trailers. In particular, noise breakthrough is appropriately reduced by hi-temporal filtering. Threshold-values for discriminating between noise and motion are computed on the basis of images generated by the x-ray detector.

REFERENCES:
patent: 4367490 (1983-01-01), Riederer
patent: 4677478 (1987-06-01), Kruger et al.
patent: 5296937 (1994-03-01), Nahatani et al.
"Spatio-Temporal Motion Compensated Noise Filtering of Image Sequences" A. K. Latsaggelos et al, SPIE vol. 1199, Visual Communications and Image Processing, IV (1989).

Affiliated with

Also associated with

Rating

X-ray examination apparatus and means for noise reduction for us does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with X-ray examination apparatus and means for noise reduction for us, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray examination apparatus and means for noise reduction for us will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1226563