Rigid and Non-rigid Registration of Binary Objects using the Weighted Ratio Image

This paper presents the application of a signal intensity independent similarity criterion for rigid and non-rigid body registration of binary objects. The criterion is defined as the weighted ratio image of two images. The ratio is computed on a voxel per voxel basis and weighting is performed by setting the raios between signal and background voxels to a standard high value. The mean squared value of the weighted ratio is computed over the union of the signal areas of the two images and it is minimized using the Chebyshev polynomial approximation.

Authors:

• Panos Kotsas
• Tony Dodd

Keywords:

• rigid and non-rigid body registration
• binary objects

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