Boots – shoes – and leggings
Patent
1989-10-25
1993-06-01
Envall, Jr., Roy N.
Boots, shoes, and leggings
36441313, G06F 1542
Patent
active
052166007
ABSTRACT:
A method for elimination of parasitic noise in an x-ray scanner consists of computing the mean value of the signals of the ten first views in a circuit (26). This mean value is subtracted from the signals of the first view V.sub.1 in a circuit (27) so as to obtain the high-frequency components H.sub.1 which are considered as parasitic noise. The signals H.sub.1 are filtered in a high-pass filter before being subtracted from the signals of the view V.sub.1 to obtain signals V'.sub.1 which are free of parasitic components. The signals V'.sub.1 are processed in a sequential circuit (31) in order to obtain signals V'.sub.2 which are free of parasitic component. The same process is repeated for the signals of the other views V.sub.3 to V.sub.m.
REFERENCES:
patent: 4654796 (1987-03-01), Takagi et al.
Gonzalez et al., Digital Image Processing, 2nd Edition, 1987, Addison-Wesley Pub. Co., pp. 163-175.
IEEE Transactions on Nuclear Science, vol. NS-25, No. 5, Oct. 1978, pp. 1111-1116, IEEE, New York, U.S., C. Kowalski, "Suppression of Ring Artefacts in CT Fan-Beam Scanners".
Cornuejols Dominique
Feldman Andrei
Envall Jr. Roy N.
General Electric CGR SA
Huntley David
LandOfFree
Method for eliminating parasitic noise in an x-ray scanner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for eliminating parasitic noise in an x-ray scanner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for eliminating parasitic noise in an x-ray scanner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1819557