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PCAnoise

  • Category : Special Effects
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  • Update : 2017-03-15
  • Size : 941kb
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  • Author :陈****
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A patch-based noise level estimation algorithm is proposed in this paper, with patches generated a single noisy image. One can easily estimate the noise level image patches using principal component analysis (PCA) if the image comprises only weak tex- tured patches. The challenge for patch-based noise level estimation is how to weak textured patches a noisy image. As de- scribed in this paper, we propose a novel algorithm to weak textured patches a single noisy image based on the gradients of the patches and their statistics. Then we estimate the noise level the selected weak textured patches using PCA. We demonstrate experimentally that the proposed noise level estimation algorithm outperforms the state-of-the-art algorithm.
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icip2012_camera_ready.pdf
my_convmtx2.m
NoiseLevel.m
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