公开(公告)号：US20150030225A1

公开(公告)日：2015-01-29

申请号：US14337209

申请日：2014-07-22

Applicant: TSINGHUA UNIVERSITY ,  NUCTECH COMPANY LIMITED

Inventor： Yuxiang XING ,  Le SHEN ,  Li ZHANG ,  Zhiqiang CHEN ,  Liang LI

IPC: G06T11/00 ,  G06T5/00 ,  G01N23/04

CPC classification number: G01N23/046 ,  G06T11/006 ,  G06T2207/10081 ,  G06T2207/20182 ,  G06T2207/30004 ,  G06T2211/408 ,  G06T2211/424

Abstract: The present disclosure relates to a self-prior information based X-ray dual-energy CT reconstruction method, which can utilize information inherent in data to provide a prior model, thereby obtaining a reconstructed image with a high quality. The X-ray dual-energy CT reconstruction method according to the present disclosure comprises: (a) rating an energy spectrum and establishing a dual-energy lookup table; (b) collecting high-energy data pH and low-energy data pL of a dual-energy CT imaging system using a detector of the dual-energy CT imaging system; (c) obtaining projection images R1 and R2 of scaled images r1 and r2 according to the obtained high-energy data pH and low-energy data pL; (d) reconstructing the scaled image r2 using a first piece-wise smooth constraint condition and thereby obtaining an electron density image; and (e) reconstructing the scaled image r1 using a second piece-wise smooth constraint condition and thereby obtaining an equivalent atomic number image. In the present disclosure, the noise in the dual-energy reconstructed image can be effectively prohibited while keeping the resolution by effectively using information inherent in data.

Abstract translation: 本公开涉及一种基于自我先验信息的X射线双能CT重建方法，其可以利用数据中固有的信息来提供先验模型，从而获得具有高质量的重建图像。 根据本公开的X射线双能CT重建方法包括：（a）评估能谱并建立双能量查找表; （b）使用双能CT成像系统的检测器收集双能CT成像系统的高能数据pH和低能量数据pL; （c）根据获得的高能量数据pH和低能量数据pL，获得缩放图像r1和r2的投影图像R1和R2; （d）使用第一分段平滑约束条件重建缩放图像r2，从而获得电子密度图像; 和（e）使用第二分段平滑约束条件重建缩放图像r1，从而获得等效的原子序数图像。 在本公开中，可以有效地禁止双能量重构图像中的噪声，同时通过有效地使用数据中固有的信息来保持分辨率。

公开(公告)号：US20140184773A1

公开(公告)日：2014-07-03

申请号：US14135922

申请日：2013-12-20

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Zhiqiang CHEN ,  Ziran ZHAO ,  Wanlong WU ,  Yuanjing LI ,  Zongjun SHEN ,  Li ZHANG ,  Yinong LIU ,  Jin CUI ,  Yingkang JIN ,  Liang LI ,  Yuxiang XING ,  Yongshun XIAO

IPC: G06K9/00 ,  G06K9/20 ,  H04N7/18

CPC classification number: G06K9/00375 ,  G01V3/12 ,  G01V8/005 ,  G06K9/209 ,  H04N7/18

Abstract: The present invention discloses a human body security inspection apparatus and a corresponding method. Specifically, the apparatus comprises: a human body security inspection device (1), configured to scan the human to be inspected (2) in order to inspect whether the human to be inspected (2) carries prohibited articles; a KINECT sensor (3), configured to real-timely acquire information about the human to be inspected (2) so that the human body security inspection device (1) is capable of real-timely acquiring the information of the human to be inspected (2) by means of the KINECT sensor (3), so as to determine whether the information conforms to requirements of the human body security inspection device (1); and a data processing device (4), configured to communicate with the human body security inspection device (1) and the KINECT sensor (3), in order to real-timely analyse and process the information of the human to be inspected (2).

Abstract translation: 本发明公开了一种人体安全检查装置和相应的方法。 具体地说，该装置包括：人体安全检查装置（1），被配置为扫描被检查的人（2），以检查被检查人（2）是否携带被禁止的物品; 一种KINECT传感器（3），被配置为实时获取关于待检查人的信息（2），使得人体安全检查装置（1）能够实时获取被检查人的信息（ 2）通过KINECT传感器（3），以确定信息是否符合人体安全检查装置（1）的要求; 以及数据处理装置（4），被配置为与人体安全检查装置（1）和KINECT传感器（3）进行通信，以便实时地分析和处理待检查的人的信息（2） 。