Tuning Parameter Selection for Sentinel-2 Sharpening Using Wald's Protocol.
IGARSS(2021)
摘要
In recent years numerous model-based methods for super-resolution of Sentinel-2 (S2) multispectral images have been suggested. Super-resolution aims to enhance the resolution of a captured image by upscaling and enhancing the details. The performance of model-based methods relies on carefully selecting regularizers and tuning parameters. This paper investigates whether using Wald's protocol, i.e., selecting tuning parameters at reduced-resolution, translates to a good performance at a full-scale. To investigate this, we use the recently proposed S2Sharp method and show that selecting its tuning parameters using Wald's protocol improves its performance.
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关键词
Image fusion,image sharpening,multispectral (MS) multiresolution images,parameter selection,scale invariance,Sentinel-2 constellation,super-resolution
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