Abstract
The noise in low photon-counting imaging system can often be described as mixed Gaussian-Poisson noise. Regularization methods are required to replace the ill-posed image denoising problems with an approximate well-posed one. However, the sole constraint in non-adaptive regularization methods is harmful to a good balance between the noise-removing and detail-preserving. Meanwhile, most existing adaptive regularization methods were aimed at unitary noise model and dual adaptive regularization scheme remained scarce. Thus, we propose a dual adaptive regularization method based on local variance to remove the mixed Gaussian-Poisson noise in micro focus X-ray images. Firstly, we raise a new 3-step image segmentation scheme based on local variance. Then, a self-adaptive p-Laplace variation function is used as the regularization operator while the regularization parameter is adaptively obtained via a barrier function. Finally, experimental results demonstrate the superiority of the proposed method in suppressing noise and preserving fine details.
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Acknowledgement
This work was supported by the National Natural Science Foundation of China under Grant 61403146 and the Fundamental Research Funds for the Central Universities (x2zd-D2155120).
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Wu, Z., Gao, H., Ma, G., Wan, Y. (2017). A Dual Adaptive Regularization Method to Remove Mixed Gaussian-Poisson Noise. In: Chen, CS., Lu, J., Ma, KK. (eds) Computer Vision – ACCV 2016 Workshops. ACCV 2016. Lecture Notes in Computer Science(), vol 10116. Springer, Cham. https://doi.org/10.1007/978-3-319-54407-6_14
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DOI: https://doi.org/10.1007/978-3-319-54407-6_14
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