Image Noise Level Estimation by Principal Component Analysis
Citations
943 citations
745 citations
649 citations
381 citations
Cites background from "Image Noise Level Estimation by Pri..."
...[7], in which a number of patches with largest variances are discarded....
[...]
...In patch-based approaches [2], [5], [7], images are decomposed into a number of patches....
[...]
225 citations
Cites background or methods from "Image Noise Level Estimation by Pri..."
...The authors of [19, 23] claim that these methods can accurately estimate the noise level of images without homogeneous areas....
[...]
...Recently, new algorithms have been proposed in [19, 23] with state-of-the-art performance....
[...]
...In both [19] and [23], researchers chose the minimum eigenvalues as their noise estimation....
[...]
...For [19] and [23], we use the default parameters reported in their papers....
[...]
...We compare its performance with two state-of-the-art methods [19, 23], whose source codes can be downloaded from their homepage 1 (2)....
[...]
References
14,773 citations
9,359 citations
7,912 citations
"Image Noise Level Estimation by Pri..." refers background in this paper
...Consider noise-free signal (xk) = (2 + (−1)k) = (1, 3, 1, 3, . . .) and noisy signal (yk) = (xk + nk), where nk are realizations of a random variable with normal distribution N (0; 0.52)....
[...]
7,422 citations
5,493 citations