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Robust Fusion of Irregularly Sampled Data Using Adaptive Normalized Convolution
EURASIP Journal on Advances in Signal Processing volume 2006, Article number: 083268 (2006)
We present a novel algorithm for image fusion from irregularly sampled data. The method is based on the framework of normalized convolution (NC), in which the local signal is approximated through a projection onto a subspace. The use of polynomial basis functions in this paper makes NC equivalent to a local Taylor series expansion. Unlike the traditional framework, however, the window function of adaptive NC is adapted to local linear structures. This leads to more samples of the same modality being gathered for the analysis, which in turn improves signal-to-noise ratio and reduces diffusion across discontinuities. A robust signal certainty is also adapted to the sample intensities to minimize the influence of outliers. Excellent fusion capability of adaptive NC is demonstrated through an application of super-resolution image reconstruction.
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Pham, T.Q., van Vliet, L.J. & Schutte, K. Robust Fusion of Irregularly Sampled Data Using Adaptive Normalized Convolution. EURASIP J. Adv. Signal Process. 2006, 083268 (2006) doi:10.1155/ASP/2006/83268
- Image Reconstruction
- Image Fusion
- Linear Structure
- Taylor Series Expansion
- Window Function