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A Heterogeneous Feature-based Image Alignment Method
Hong Kong August 20-August 24
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/ICPR.2006.7718th International Conference on Patt ...
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Cen Rao, Sarnoff Corporation, 201 Washington Road, Princeton, NJ 08534
Yanlin Guo, Sarnoff Corporation, 201 Washington Road, Princeton, NJ 08534
Harpreet Sawhney, Sarnoff Corporation, 201 Washington Road, Princeton, NJ 08534
Rakesh Kumar, Sarnoff Corporation, 201 Washington Road, Princeton, NJ 08534
In this paper, we propose a robust heterogeneous feature based image alignment method that utilizes points, lines and regions in a unified framework. The image motion is decomposed into progressively complex components, i.e., translation, similarity, affine, and projective motion models, and alignment is obtained with deliberatively selected suitable feature types and associated descriptors. Large convergence range is obtained by gradually constraining the search range of features in each stage. Notably, point and line features are jointly used and formulated in a RANSAC (Random Sample Consensus) framework for robust estimation of a homography between low textured images. Further improvement is obtained with region based direct method. Experiments demonstrate superior alignment results of our approach to both gradient-based direct method and tradition point feature based alignment method.
Citation:
Cen Rao, Yanlin Guo, Harpreet Sawhney, Rakesh Kumar, "A Heterogeneous Feature-based Image Alignment Method," icpr, vol. 2, pp.345-350, 18th International Conference on Pattern Recognition (ICPR'06) Volume 2, 2006
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