Image representation based on the affine symmetry group

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)


The representation of 2-D signals which are symmetric under the affine group of transformations is considered. An extension of the multiresolution Fourier transform (MFT) is presented and shown to have a predictable redistribution of energy as a result of affine transformations of the input signal. An approximation based on the discrete MFT then forms the basis of a computationally efficient algorithm for estimating local affine coordinate transformations between pairs of image regions. Results of applying the technique to an image registration problem illustrate its potential.
Translated title of the contributionImage representation based on the affine symmetry group
Original languageEnglish
Title of host publicationProceedings of 3rd IEEE International Conference on Image Processing
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Print)0-7803-3259-8
Publication statusPublished - 1996


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