Elements of information theory
Elements of information theory
Alignment by maximization of mutual information
Alignment by maximization of mutual information
IEEE Transactions on Information Theory
Breast Density Segmentation: A Comparison of Clustering and Region Based Techniques
IWDM '08 Proceedings of the 9th international workshop on Digital Mammography
Multimodal registration via spatial-context mutual information
IPMI'11 Proceedings of the 22nd international conference on Information processing in medical imaging
Distributed high dimensional information theoretical image registration via random projections
Digital Signal Processing
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Mutual information has been successfully used as an effective similarity measure for multimodal image registration. However, a drawback of the standard mutual information-based computation is that the joint histogram is only calculated from the correspondence between individual voxels in the two images. In this paper, the normalized mutual information measure is extended to consider the correspondence between voxel blocks in multimodal rigid registration. The ambiguity and high-dimensionality that appears when dealing with the voxel neighborhood is solved using uniformly distributed random lines and reducing the number of bins of the images. Experimental results show a significant improvement with respect to the standard normalized mutual information.