Shape reconstruction from planar cross sections
Computer Vision, Graphics, and Image Processing
Multiresolution elastic matching
Computer Vision, Graphics, and Image Processing
A Theory for Multiresolution Signal Decomposition: The Wavelet Representation
IEEE Transactions on Pattern Analysis and Machine Intelligence
An introduction to wavelets
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We present a method to automatically register images presenting bothglobal and local deformations. The image registration process isperformed by exploiting a multi-level/multi-image approach wherebyafter having wavelet-transformed the images, the subband images atdifferent levels are used in a non-feature-based way to determine themotion vectors between the reference and the target images. The crudemotion field determined by block matching at the coarsest level ofthe pyramid is successively refined by taking advantage of both theorientation sensitivity of the different subbands and thecontribution of the adjacent levels. The final registered image isobtained by applying the motion field to the lowest level of thepyramid and by inversely transforming it.