Title:
METHOD AND APPARATUS FOR CALIBRATING THREE-DIMENSIONAL CAMERA IN X-RAY IMAGING, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/093347
Kind Code:
A1
Abstract:
Embodiments of the present disclosure provide a method and apparatus for calibrating a three-dimensional camera in X-ray imaging, and a storage medium. The method includes: acquiring a three-dimensional image of a calibration plate captured by a three-dimensional camera, where the calibration plate includes a positioning marker, and the calibration plate has a predetermined distance from an X-ray tube; determining first three-dimensional coordinates of the positioning marker in a three-dimensional camera coordinate system on the basis of the three-dimensional image; determining second three-dimensional coordinates of the positioning marker in an X-ray tube coordinate system on the basis of the distance; and determining, on the basis of the first three-dimensional coordinates and the second three-dimensional coordinates, a transformation matrix adapted to calibrate the three-dimensional camera. The embodiments of the present disclosure can overcome the system error caused by the coordinate system difference.
Inventors:
PENG XI SHUAI (CN)
LUO XIN (CN)
HUANG SHUAI HUA (CN)
LUO XIN (CN)
HUANG SHUAI HUA (CN)
Application Number:
PCT/CN2022/125176
Publication Date:
June 01, 2023
Filing Date:
October 13, 2022
Export Citation:
Assignee:
SIEMENS SHANGHAI MED EQUIP LTD (CN)
International Classes:
A61B6/00; A61B5/00; A61B5/107; G01B11/00; G01B11/24; G01S17/06; G01S17/89; G06T7/70
Foreign References:
| US20180235566A1 | 2018-08-23 | |||
| US20170100089A1 | 2017-04-13 | |||
| EP3671111A1 | 2020-06-24 |
Other References:
LI JING ET AL: "A fully automatic surgical registration method for percutaneous abdominal puncture surgical navigation", COMPUTERS IN BIOLOGY AND MEDICINE, NEW YORK, NY, US, vol. 136, 29 July 2021 (2021-07-29), XP086773687, ISSN: 0010-4825, [retrieved on 20210729], DOI: 10.1016/J.COMPBIOMED.2021.104663
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
Download PDF:
Previous Patent: EXOGENOUS FEATURE-BASED MODEL OWNERSHIP VERIFICATION METHOD AND APPARATUS
Next Patent: IMPROVED CORN POLLEN MAGNETOFECTION METHOD
Next Patent: IMPROVED CORN POLLEN MAGNETOFECTION METHOD