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Communication Dans Un Congrès Année : 2023

Exact Solution for Multispectral and Hyperspectral Fusion via Hessian Inversion

Résumé

Multispectral and hyperspectral data fusion allows the restoration of data with increased spatial and spectral resolutions. A common approach is to solve an ill-posed inverse problem by minimizing a regularized least squares criterion. This minimization usually requires an iterative gradient-based method, but this paper demonstrates the existence of an explicit solution. Direct models of the imager and the spectrometer are described, the explicit solution is developed, and an application on simulated data from the James Webb Space Telescope is presented. A potential time saving of a factor of 1 000 is highlighted by the proposed method.
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Dates et versions

hal-04280356 , version 1 (10-11-2023)

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  • HAL Id : hal-04280356 , version 1

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Dan Pineau, François Orieux, Alain Abergel. Exact Solution for Multispectral and Hyperspectral Fusion via Hessian Inversion. Workshop on Hyperspectral Images and Signal Processing : Evolution in Remote Sensing, Oct 2023, Athens, Greece. ⟨hal-04280356⟩
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