The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2009
Filed:
Aug. 04, 2005
Ram Naidu, Waban, MA (US);
Zhengrong Ying, Wakefield, MA (US);
Sergey Simanovsky, Brookline, MA (US);
Matthew Hirsch, Cambridge, MA (US);
Carl R. Crawford, Brookline, MA (US);
Ram Naidu, Waban, MA (US);
Zhengrong Ying, Wakefield, MA (US);
Sergey Simanovsky, Brookline, MA (US);
Matthew Hirsch, Cambridge, MA (US);
Carl R. Crawford, Brookline, MA (US);
Analogic Corporation, Peabody, MA (US);
Abstract
A method of and a system for identifying objects using histogram segment features from multi-energy CT images are provided. The multi-energy CT images include a CT image, which approximates density measurements of scanned objects, and a Z image, which approximates effective atomic number measurements of scanned objects. The method comprises: computing a density histogram for each potential threat object; smoothing the density histogram using a low-pass filter; identifying peaks in the smoothed density histogram; assigning a segment to each peak; computing histogram segment features for each segment; classifying each potential threat object into a threat or a non-threat using computed features.
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