Journal
COMPUTER JOURNAL
Volume 52, Issue 1, Pages 90-100Publisher
OXFORD UNIV PRESS
DOI: 10.1093/comjnl/bxm028
Keywords
super-resolution; MODIS images; outliers; L-1 norm data fidelity; Huber prior
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Funding
- RGC [7035/04P, 7035/05P]
- HKBU FRGs
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In this paper, we propose a super-resolution image reconstruction algorithm to moderate-resolution imaging spectroradiometer (MODIS) remote sensing images. This algorithm consists of two parts: registration and reconstruction. In the registration part, a truncated quadratic cost function is used to exclude the outlier pixels, which strongly deviate from the registration model. Accurate photometric and geometric registration parameters can be obtained simultaneously. In the reconstruction part, the L-1 norm data fidelity term is chosen to reduce the effects of inevitable registration error, and a Huber prior is used as regularization to preserve sharp edges in the reconstructed image. In this process, the outliers are excluded again to enhance the robustness of the algorithm. The proposed algorithm has been tested using real MODIS band-4 images, which were captured in different dates. The experimental results and comparative analyses verify the effectiveness of this algorithm.
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