logo

For the Inventor, By the Inventor

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.:

US 9743892 B1

PDFFull Text
Date of Patent:
Aug. 29, 2017

Filed:

Apr. 30, 2013

Image distortion correction and robust phantom detection

Applicant:

Universitat Bern, Bern, CH;

Inventors:

Guoyan Zheng, Bern, CH;

Steffen Schumann, Bern, CH;

Assignee:

UNIVERSITAT BERN, Bern, CH;

Attorney:

JMB Davis Ben-David

Primary Examiner:

Anastasia Midkiff

Int. Cl.
CPC ...
A61B 6/04 (2006.01); G06K 9/20 (2006.01); G06T 7/00 (2017.01); G06K 9/78 (2006.01); G06K 9/80 (2006.01); A61B 6/00 (2006.01); G06K 9/62 (2006.01); G06T 5/00 (2006.01); G06T 7/80 (2017.01);
U.S. Cl.
CPC ...
A61B 6/0492 (2013.01); A61B 6/582 (2013.01); A61B 6/583 (2013.01); A61B 6/584 (2013.01); G06K 9/2063 (2013.01); G06K 9/6203 (2013.01); G06T 7/0014 (2013.01); A61B 6/4441 (2013.01); G06K 9/2054 (2013.01); G06K 9/78 (2013.01); G06K 9/80 (2013.01); G06T 5/006 (2013.01); G06T 7/80 (2017.01); G06T 2207/10081 (2013.01); G06T 2207/10116 (2013.01); G06T 2207/20 (2013.01); G06T 2207/30004 (2013.01); G06T 2207/30204 (2013.01); G06T 2211/40 (2013.01);
Abstract

The invention relates to a method for detecting a phantom, comprising the steps of: arranging a phantom with respect to an object, acquiring at least one image of said object by means of an x-ray apparatus, such that the image contains projections of the object and projections of at least three first calibration fiducials of the phantom, detecting the projections of the at least three first calibration fiducials in said at least one image, and establishing a correspondence between the 2D image coordinates of said projections of the at least three first calibration fiducials and the 3D coordinates of said at least three first calibration fiducials in a local coordinate system of the phantom for computing the projection matrix at least up to a scale factor.

Find Patent Forward Citations

Loading…