MI image registration using prior knowledge

Details MI image registration using prior knowledge MI image registration using prior knowledge

2007-05-24

arxiv.org/abs/0705.3593v2

Computer Science

Computer Vision and Pattern Recognition

16 pages

Scientific paper

Subtraction of aligned images is a means to assess changes in a wide variety of clinical applications. In this paper we explore the information theoretical origin of Mutual Information (MI), which is based on Shannon's entropy.However, the interpretation of standard MI registration as a communication channel suggests that MI is too restrictive a criterion. In this paper the concept of Mutual Information (MI) is extended to (Normalized) Focussed Mutual Information (FMI) to incorporate prior knowledge to overcome some shortcomings of MI. We use this to develop new methodologies to successfully address specific registration problems, the follow-up of dental restorations, cephalometry, and the monitoring of implants.

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