公开(公告)号：US10955572B2

公开(公告)日：2021-03-23

申请号：US16137547

申请日：2018-09-21

Applicant: Tsinghua University ,  Nuctech Company Limited

Inventor： Li Zhang ,  Zhiqiang Chen ,  Sen Wang ,  Xiaofei Xu ,  Yuanjing Li ,  Xin Jin

IPC: G01T7/00 ,  G01T1/16 ,  G01T1/36

Abstract: The present disclosure relates to a data processing method and device. The data processing method comprises steps of: performing detector response calibration based on a detector response obtained by an incidence of rays with known energy into a detector to obtain a detector response model; obtaining a photon counting model of the detector between incident energy spectrum data of the detector and detected energy spectrum data of the detector based on the detector response model; and performing a deconvolution operation on counts of photons in respective energy regions in the detected energy spectrum data of the detector based on the photon counting model of the detector, to obtain real counts of photons in respective energy regions in the incident energy spectrum data of the detector.

公开(公告)号：US09805504B2

公开(公告)日：2017-10-31

申请号：US14711949

申请日：2015-05-14

Applicant: Nuctech Company Limited

Inventor： Li Zhang ,  Zhiqiang Chen ,  Qingping Huang ,  Yunda Sun ,  Zhi Tang ,  Le Shen ,  Hu Tang ,  Qianlu Ren ,  Xin Jin

IPC: H05G1/64 ,  G06T17/00 ,  A61B6/03 ,  A61B6/00 ,  G06T19/00 ,  G06T11/00 ,  G01N23/04

CPC classification number: G06T17/00 ,  A61B6/032 ,  A61B6/463 ,  A61B6/466 ,  A61B6/5205 ,  A61B6/5223 ,  G01N23/046 ,  G06T11/003 ,  G06T19/003 ,  G06T2207/10081 ,  G06T2207/10124 ,  G06T2207/30004 ,  G06T2207/30196 ,  G06T2210/41 ,  G06T2211/436 ,  G06T2219/016 ,  G06T2219/028 ,  G06T2219/2004

Abstract: The present disclosure discloses an image display method in a CT system. The method comprises: implementing CT scanning on an inspected object, to obtain CT projection data; organizing the CT projection data according to a predetermined interval; extracting basic data from the organized CT projection data by using a fixed angle as a start angle and using 360 degrees as an interval; forming a DR image based on the extracted basic data; reconstructing a three-dimensional image of the inspected object from the CT projection data; and displaying the DR image and the reconstructed three-dimensional image on a screen at the same time. In the solution, the CT data is processed to obtain DR data. After the DR data is obtained, a DR image is obtained directly using a DR data processing algorithm. This enables an image recognizer to more accurately and more rapidly inspect goods carried by a passenger using the existing experience in image recognition of the DR image.