Abstract
In this paper, we construct fixed-point algorithms for the second-order total variation models through discretization models and the subdifferential and proximity operators. Particularly, we focus on the convergence conditions of our algorithms by analyzing the eigenvalues of the difference matrix. The algorithms are tested on various images to verify our proposed convergence conditions. The experiments compared with the split Bregman algorithms demonstrate that fixed-point algorithms could solve the second-order functional minimization problem stably and effectively.
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Supported by NSF of China (11431015), NSF of Guangdong (2016A030313048), ministry of education in Guangdong for excellent young teachers.
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Gao, T., Wang, X., Liu, Q. et al. A fixed-point algorithm for second-order total variation models in image denoising. Comp. Appl. Math. 38, 8 (2019). https://doi.org/10.1007/s40314-019-0763-2
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DOI: https://doi.org/10.1007/s40314-019-0763-2