A moment-based approach to registration of images with affinegeometric distortion |
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Authors: | Flusser J. Suk T. |
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Affiliation: | Inst. of Inf. Theory & Autom., Czechoslovak Acad. of Sci., Prague; |
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Abstract: | A new method is described for automatic control point selection and matching. First, reference and sensed images are segmented and closed-boundary regions are extracted. Each region is represented by a set of affine-invariant moment-based features. Correspondence between the regions is then established by a two-stage matching algorithm that works both in the feature space and in the image space. Centers of gravity of corresponding regions are used as control points. A practical use of the proposed method is demonstrated by registration of SPOT and Landsat TM images. It is shown that the authors' method can produce subpixel registration accuracy |
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