TY - GEN
T1 - Adaptive Wiener filter based on Gaussian mixture model for denoising chest X-ray CT image
AU - Tabuchi, Motohiro
AU - Yamane, Nobumoto
AU - Morikawa, Yoshitaka
PY - 2007
Y1 - 2007
N2 - Because the X-ray CT imaging has high spatial resolution, it becomes more important in diagnostic imaging. However the techniques of low dose imaging at X-ray mass examination or thin slice imaging provide degraded CT images by noise. The CT images have specific noise, called streak artifact. In this paper, we apply an adaptive Wiener filter (AWF) based on the Gaussian mixture distribution model (GMM), proposed previously to reduce Gaussian white noise. Simulation results show that a new AWF-GMM designed using high dose (original) CT image and low dose (observed) CT image pairs of chest phantom for training image set provides high restoration ability.
AB - Because the X-ray CT imaging has high spatial resolution, it becomes more important in diagnostic imaging. However the techniques of low dose imaging at X-ray mass examination or thin slice imaging provide degraded CT images by noise. The CT images have specific noise, called streak artifact. In this paper, we apply an adaptive Wiener filter (AWF) based on the Gaussian mixture distribution model (GMM), proposed previously to reduce Gaussian white noise. Simulation results show that a new AWF-GMM designed using high dose (original) CT image and low dose (observed) CT image pairs of chest phantom for training image set provides high restoration ability.
KW - Adaptive wiener filter
KW - Expectation-maximization algorithm
KW - Gaussian mixture distribution model
KW - Maximum a posteriori probability
KW - Phantom
UR - http://www.scopus.com/inward/record.url?scp=50249153697&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50249153697&partnerID=8YFLogxK
U2 - 10.1109/SICE.2007.4421069
DO - 10.1109/SICE.2007.4421069
M3 - Conference contribution
AN - SCOPUS:50249153697
SN - 4907764286
SN - 9784907764289
T3 - Proceedings of the SICE Annual Conference
SP - 682
EP - 689
BT - SICE Annual Conference, SICE 2007
T2 - SICE(Society of Instrument and Control Engineers)Annual Conference, SICE 2007
Y2 - 17 September 2007 through 20 September 2007
ER -