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Patent Searching and Data


Title:
MULTI-ANGLE IMAGING DATA PROCESSING METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/121325
Kind Code:
A1
Abstract:
A multi-angle imaging data processing method and apparatus. The method comprises: irradiating, using X-ray, and from two or more angles, an object to be checked (120) to obtain multi-angle imaging data (310); extracting, from the multi-angle imaging data, data representing the same region in the object to be checked (120) (320); reconstructing, according to the extracted data, a cross-sectional area (330); processing, on the basis of gradient descent, the reconstructed cross-sectional area to obtain a processed reconstructed cross-sectional area; determining, according to the processed reconstructed cross-sectional area, an effective atomic number and a characteristic density in the region; and determining, on the basis of the determined effective atomic number and characteristic density, whether the region contains a prohibited article.

Inventors:
WU SHANSHAN (CN)
WANG QIANG (CN)
LIU JINGJING (CN)
LIAO YUHUA (CN)
ZHANG JINYU (CN)
Application Number:
PCT/CN2017/116970
Publication Date:
July 05, 2018
Filing Date:
December 18, 2017
Export Citation:
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Assignee:
NUCTECH CO LTD (CN)
International Classes:
G01N23/04
Foreign References:
CN101592579A2009-12-02
CN105796121A2016-07-27
CN103150744A2013-06-12
CN105911604A2016-08-31
CN104240210A2014-12-24
JP2016049455A2016-04-11
Other References:
SIDKY, EMILY ET AL.: "Accurate image reconstruction from few-views and limi- ted-angle data in divergent-beam CT", JOURNAL OF X-RAY SCIENCE AND TECHNOLOGY, vol. 14, no. 2, 31 December 2006 (2006-12-31), pages 119 - 139, XP009145909, ISSN: 0895-3996
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (CN)
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