Description: 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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