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.:
Date of Patent:
Dec. 06, 2011
Filed:
Sep. 11, 2008
Ti-chiun Chang, Princeton Junction, NJ (US);
Yunqiang Chen, Plainsboro, NJ (US);
Tong Fang, Morganville, NJ (US);
Sandra Martin, Herzogenaurauch, DE;
Stefan Böhm, Oberasbach, DE;
Peter Durlak, Erlangen, DE;
Ti-chiun Chang, Princeton Junction, NJ (US);
Yunqiang Chen, Plainsboro, NJ (US);
Tong Fang, Morganville, NJ (US);
Sandra Martin, Herzogenaurauch, DE;
Stefan Böhm, Oberasbach, DE;
Peter Durlak, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method and system for correcting butting artifacts in x-ray images is disclosed. In order to correct a butting artifact in an x-ray image, a butting artifact region in the x-ray image is normalized. Multiple intensity shift estimators are calculated for each pixel of each line of the butting artifact. Confidence intervals are calculated for each intensity shift estimator. A multiple hypothesis hidden Markov model (MH-HMM) is formulated based on the intensity shift operators and confidence measures subject to a smoothness constraint, and the MH-HMM is solved to determine intensity shift values for each pixel. A corrected image is generated by adjusting the intensity of each pixel of the butting artifact based on the intensity shift value for that pixel.