SPATIAL SEQUENCED BACKSCATTER PORTAL
First Claim
1. A method for scanning an object in an inspection space comprising:
- (a) scanning the object from a first perspective that is substantially orthogonal to a first plane starting at a first entry point in the inspection space that is adjacent a first edge of the inspection space to establish a first scan line trace of the object from the first perspective;
(b) scanning the object from a second perspective that is substantially orthogonal to a second plane that is adjacent to but not co-planar with the first plane, starting at a second entry point on the second plane that is adjacent a second edge between the first plane and the second plane, to establish a second scan line trace of the object from the second perspective;
(c) providing relative motion between the object and the first scan line trace and the second scan line trace; and
(d) repeating step (a), step (b), and step (c) at least once such that the repetition of step (a) produces a first two-dimensional image of the object comprising multiple first image scan lines from the first perspective and step (b) produces a second two-dimensional image of the object comprising multiple second image scan lines from the second perspective.
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Accused Products
Abstract
Systems and methods for scanning an object in an inspection space are disclosed. The systems and methods generally incorporate spatially separated and sequenced Compton x-ray backscatter imaging techniques in a plurality of perspective planes. Such processes as time-gating detectors, weighting scintillation detections, and preferentially accepting signals that originate from a point that is substantially orthogonal to a radiation detector and at least partially shielding out signals that do not originate from a point substantially orthogonal to the detector may be used to enhance the data acquisition process.
47 Citations
12 Claims
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1. A method for scanning an object in an inspection space comprising:
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(a) scanning the object from a first perspective that is substantially orthogonal to a first plane starting at a first entry point in the inspection space that is adjacent a first edge of the inspection space to establish a first scan line trace of the object from the first perspective; (b) scanning the object from a second perspective that is substantially orthogonal to a second plane that is adjacent to but not co-planar with the first plane, starting at a second entry point on the second plane that is adjacent a second edge between the first plane and the second plane, to establish a second scan line trace of the object from the second perspective; (c) providing relative motion between the object and the first scan line trace and the second scan line trace; and (d) repeating step (a), step (b), and step (c) at least once such that the repetition of step (a) produces a first two-dimensional image of the object comprising multiple first image scan lines from the first perspective and step (b) produces a second two-dimensional image of the object comprising multiple second image scan lines from the second perspective. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for scanning an object in an inspection space comprising:
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(a) scanning the object from a first perspective that is substantially orthogonal to a first plane starting at a first entry point adjacent a first edge of the inspection space to establish a first scan line trace of the object from the first perspective; (b) scanning the object from a second perspective that is substantially orthogonal to a second plane where the second perspective is opposed to the first perspective, starting the scanning at a second entry point on the second plane that is diagonally opposed across the inspection space from the first entry point, to establish a second scan line trace of the object from the second perspective, wherein step (a) and step (b) are initiated at approximately the same time; (c) providing relative motion between the object and the first scan line trace and the second scan line trace; and (d) repeating step (a), step (b), and step (c) at least once such that the repetition of step (a) produces a first two-dimensional image of the object comprising multiple first image scan lines from the first perspective and step (b) produces a second two-dimensional image of the object comprising multiple second image scan lines from the second perspective. - View Dependent Claims (9, 10, 11, 12)
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Specification