Single image super-resolution via internal gradient similarity.
Journal of Visual Communication and Image Representation（2016）
摘要
•A novel super-resolution (SR) method based on internal gradient similarity.•A detailed investigation on constructing images from gradients.•Study on internal and external statistics (general and class-specific) for image SR.•High-quality results compared with other state-of-the-art SR algorithms.
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关键词
Image super-resolution,Image quality enhancement,Patch similarity,Self-redundancy,Across scale,Gradient similarity,Optimization,Gradient descent algorithm
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