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Discrete wavelet transform based multispectral filter array demosaicking

Abstract : The idea of colour filter array may be adapted to multi-spectral image acquisition by integrating more filter types into the array, and developing associated demosaicking algorithms. Several methods employing discrete wavelet transform (DWT) have been proposed for CFA demosaicking. In this work, we put forward an extended use of DWT for mul-tispectral filter array demosaicking. The extension seemed straightforward, however we observed striking results. This work contributes to better understanding of the issue by demonstrating that spectral correlation and spatial resolution of the images exerts a crucial influence on the performance of DWT based demosaicking.
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Xingbo Wang, Jean-Baptiste Thomas, Jon Yngve Hardeberg, Pierre Gouton. Discrete wavelet transform based multispectral filter array demosaicking. Colour and Visual Computing Symposium (CVCS), 2013, Sep 2013, Gjøvik, Norway. ⟨10.1109/CVCS.2013.6626274⟩. ⟨hal-01213971⟩

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