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Learning Super-Resolution Jointly From External and Internal Examples
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DOI：10.1109/TIP.2015.2462113.png)
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摘要
En 中文
Single image super-resolution (SR) aims to estimate a high-resolution (HR) image from a low-resolution (LR) input. Image priors are commonly learned to regularize the, otherwise, seriously ill-posed SR problem, either using external LR-HR pairs or internal similar patterns. We propose joint SR to adaptively combine the advantages of both external and internal SR methods. We define two loss functions using sparse coding-based external examples, and epitomic matching based on internal examples, as well as a corresponding adaptive weight to automatically balance their contributions according to their reconstruction errors. Extensive SR results demonstrate the effectiveness of the proposed method over the existing state-of-the- art methods, and is also verified by our subjective evaluation study.
Keyword:
Super-resolution
example-based methods
sparse coding
epitome
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期刊
IF:
13.7
论文数:
1.0W
被引数:
8.4W
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