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Issue No.06 - June (2008 vol.30)
pp: 1014-1027
EEdge-preserving filters such as local M-smoothers or bilateral filtering are usually designed for Gaussian noise. This paper investigates how these filters can be adapted in order to efficiently deal with Poissonian noise. In addition, the issue of photometry invariance is addressed by changing the way filter coefficients are normalized. The proposed normalization is additive, instead of being multiplicative, and leads to a strong connection with anisotropic diffusion. Experiments show that ensuring the photometry invariance leads to comparable denoising performances in terms of the root mean square error computed on the signal.
Filtering, Image processing software, Statistical computing
Xavier Geets, Vincent Grégoire, John A. Lee, "Edge-Preserving Filtering of Images with Low Photon Counts", IEEE Transactions on Pattern Analysis & Machine Intelligence, vol.30, no. 6, pp. 1014-1027, June 2008, doi:10.1109/TPAMI.2008.16
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