X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
2006-03-14
2006-03-14
Bruce, David V. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
C378S021000
Reexamination Certificate
active
07012987
ABSTRACT:
A method for substantially reducing the contribution of dense regions of an object while less dense regions of the object are being processed in a laminography blurring system. The method comprises the steps of positioning an x-ray source with a moving fan beam on one side of the object; positioning a row of x-ray detectors on the side of the object opposite that of the x-ray source; sequentially emitting a plurality of x-ray fan beams along an x-ray source line and directed through a focused pixel of the object to the row of x-ray detectors; sampling the x-ray detectors once for each of the fan beams for a total of it samples of intensity Ii; determining the maximum intensity Imaxfrom the samples Ii; choosing a parameter P greater than one; retaining only those samples Iithat are greater than or equal to Imax/P; summing the retained samples; and normalizing the resultant sum. Normalizing can include multiplying the sum by the total number of samples divided by the number of retained samples.
REFERENCES:
patent: 6236709 (2001-05-01), Perry et al.
patent: 6628745 (2003-09-01), Annis et al.
Altman & Martin
Bruce David V.
Song Hoon
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