Multiple Image Collection and Synthesis for Personnel Screening
First Claim
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1. An apparatus for ascertaining a material feature associated with a given subject, the apparatus comprising:
- a. a first source of penetrating radiation, including a first collimator, adapted to produce a first beam of penetrating radiation incident on the subject;
b. a first actuator adapted to move the first source of penetrating radiation with respect to the given subject so as to scan the subject by moving the first beam of penetrating radiation in a motion including vertical travel, wherein all travel in a vertical direction is one-way during a course of inspection of a first side of the given subject;
c. a second source of penetrating radiation, including a second collimator, adapted to produce a second beam of penetrating radiation incident on the given subject;
d. a second actuator adapted to move the second source of penetrating radiation with respect to the given subject so as to scan the given subject by moving the second beam of penetrating radiation in a motion including vertical travel, wherein all travel in a vertical direction is one-way during a course of inspection of a second side of the given subject;
e. at least one detector for receiving radiation produced by at least one of the first and second sources after interaction of the penetrating radiation with the given subject and for generating a scatter signal; and
f. a processor for identifying a threat material based at least on the scatter signal.
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Abstract
An apparatus and method for inspecting personnel or their effects. A first and second carriage each carries a source for producing a beam of penetrating radiation incident on a given subject. A positioner provides for relative motion of each beam vis-à-vis the subject in a motion, the vertical component of which is one-way. A detector receives radiation produced by at least one of the sources after the radiation interacts with the subject.
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Citations
20 Claims
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1. An apparatus for ascertaining a material feature associated with a given subject, the apparatus comprising:
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a. a first source of penetrating radiation, including a first collimator, adapted to produce a first beam of penetrating radiation incident on the subject; b. a first actuator adapted to move the first source of penetrating radiation with respect to the given subject so as to scan the subject by moving the first beam of penetrating radiation in a motion including vertical travel, wherein all travel in a vertical direction is one-way during a course of inspection of a first side of the given subject; c. a second source of penetrating radiation, including a second collimator, adapted to produce a second beam of penetrating radiation incident on the given subject; d. a second actuator adapted to move the second source of penetrating radiation with respect to the given subject so as to scan the given subject by moving the second beam of penetrating radiation in a motion including vertical travel, wherein all travel in a vertical direction is one-way during a course of inspection of a second side of the given subject; e. at least one detector for receiving radiation produced by at least one of the first and second sources after interaction of the penetrating radiation with the given subject and for generating a scatter signal; and f. a processor for identifying a threat material based at least on the scatter signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for inspecting a given subject comprising:
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moving a first source of penetrating radiation with respect to the given subject so as to scan the given subject by moving a first beam of penetrating radiation in a motion including vertical travel, wherein all travel of the first beam in a vertical direction is one-way during a course of a scan of a first side of the given subject; moving a second source of penetrating radiation with respect to the given subject so as to scan the given subject by moving a second beam of penetrating radiation in a motion including vertical travel, wherein all travel of the second beam in a vertical direction is one-way during a course of a scan of a second side of the given subject; detecting, with at least one detector, radiation produced by at least one of the first and second sources after interaction of the penetrating radiation with the given subject; generating a detector output signal based on radiation received by the at least one detector; and characterizing the given subject on the basis of the detector output signal. - View Dependent Claims (18, 19, 20)
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Specification