Method and system for correcting butting artifacts in X-ray...

Details Method and system for correcting butting artifacts in X-ray... Method and system for correcting butting artifacts in X-ray...

2008-09-11

2011-12-06

Fitzpatrick, Atiba O (Department: 2624)

Image analysis

Applications

Reexamination Certificate

active

08073191

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.

REFERENCES:
patent: 7372017 (2008-05-01), Hörnig
patent: 2007/0007447 (2007-01-01), Spahn
patent: 2007/0057170 (2007-03-01), Hornig
H. Qi, et al., “Missing Data Estimation by Separable Deblurring”, Proc. for the IEEE Int'l Joint Symposia on Intelligence and Systems, pp. 348-353, May 1998.
H. Qi, et al., “Conditioning Analysis of Missing Data Estimation for Large Sensor Arrays”, IEEE Int'l Conf. on Comp. Vision & Pattern Recognition, v2, pp. 565-570, Jun. 2000.

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