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Image denoising via neighborhood-based multidimensional Gaussian process regression

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Abstract

As an elegant nonparametric Bayesian method, Gaussian process regression (GPR) has been successfully applied to image denoising. However, the traditional GPR faces the problem of intensive computational complexity and difficulty in capturing local-structure information. In this paper, a novel neighborhood-based image denoising method motivated by the GPR is proposed. An image is divided into several patches, and each pixel in the patches is predicted by its neighborhoods through the GPR, which allows the priors to be local and relevant and reduces the complexity of the GPR. Besides, a composite covariance function is designed to capture the local similarity between pixels. The extensive experiments demonstrate that the proposed method can not only produce a favorable denoising performance, but also have a relatively low time consumption.

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Correspondence to Qingyu Li.

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Hua, T., Li, Q., Dai, K. et al. Image denoising via neighborhood-based multidimensional Gaussian process regression. SIViP 17, 389–397 (2023). https://doi.org/10.1007/s11760-022-02245-9

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  • DOI: https://doi.org/10.1007/s11760-022-02245-9

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