Further analysis of interpolation effects in mutual information-based image registration. Academic Article

abstract

• This paper presents an analysis of the mutual information (MI) metric in rigid-body registration of two digital images, in particular, local fluctuations of the MI value due to interpolation. In contrast to existing work in this area, this paper starts with two hypothetical continuous images, based on which both sampling and interpolation effects are analyzed. This analysis indicates that an "ideal" interpolator may not be able to completely suppress the undesirable local minima of the MI metric if the sampling effect is not negligible. Several preprocessing methods are discussed for reducing the interpolation effects.

authors

• Ji, Jim

published proceedings

• IEEE Trans Med Imaging

author list (cited authors)

• Ji, J. X., Pan, H., & Liang, Z.

citation count

• 29

complete list of authors

• Ji, Jim Xiuquan||Pan, Hao||Liang, Zhi-Pei

publication date

• September 2003

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE Transactions on Medical Imaging  Journal

keywords

• Algorithms
• Artifacts
• Brain
• Humans
• Image Enhancement
• Image Interpretation, Computer-Assisted
• Magnetic Resonance Imaging
• Reproducibility Of Results
• Sample Size
• Sensitivity And Specificity
• Signal Processing, Computer-Assisted
• Subtraction Technique

Digital Object Identifier (DOI)

• 10.1109/TMI.2003.816957

start page

• 1131

end page

• 1140

volume

• 22

issue

• 9

URL

• http://dx.doi.org/10.1109/tmi.2003.816957