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METHOD FOR UPSCALING AN IMAGE AND APPARATUS FOR UPSCALING AN IMAGE
METHOD FOR UPSCALING AN IMAGE AND APPARATUS FOR UPSCALING AN IMAGE
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机译:用于升级图像的方法和用于升级图像的装置
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摘要
Image super-resolution (SR) generally enhance the resolution of images. One of SR's main challenge is discovering mappings between low-resolution (LR) and high-resolution (HR) image patches. The invention learns patch upscaling projection matrices from a training set of images. Input images are divided into overlapping patches (410), which are normalized (420,430) and transformed (440) to a defined orientation. Different transformations can be recognized and dealt with by using a simple 2D-projection. The transformed patches are clustered, and cluster specific upscaling projection matrices and corresponding cluster centroids determined during training are applied to obtain upscaled patches. The upscaled patches are assembled to an upscaled image.
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