Methods Inf Med 2000; 39(02): 130-133
DOI: 10.1055/s-0038-1634282
Original Article
Schattauer GmbH

Band-Suppressed Restoration of X-Ray Images Blurred by Body Movement

J. Hori
1  Faculty of Engineering, Niigata University, Niigata, Japan
,
Y. Saitoh
1  Faculty of Engineering, Niigata University, Niigata, Japan
,
T. Kiryu
2  Graduate School of Science and Technology, Niigata University, Niigata, Japan
,
K. Okamoto
3  Department of Radiology, Niigata University School of Medicine, Niigata, Japan
,
K. Sakai
3  Department of Radiology, Niigata University School of Medicine, Niigata, Japan
› Author Affiliations
Further Information

Publication History

Publication Date:
07 February 2018 (online)

Abstract:

The restoration of X-ray images that have been blurred due to body movement are discussed. The observation system for these images is described using a mathematical model, and several restoration filters composed of a series of such models are proposed. These filters restore band-suppressed approximations of the original images. In addition, redundancy is introduced into these restoration filters in order to suppress additive noise. These filters are expanded to be applicable not only to parallel translations, but also to rotations by coordinate transformation. The proposed methods are applied to blurred X-ray images of a bone model of the elbow joint. The parameters of the restoration filter are estimated using a marker attached to the subject as a reference signal.