IVCVNAJul 1, 2023

Weighted Anisotropic-Isotropic Total Variation for Poisson Denoising

arXiv:2307.00439v18 citationsh-index: 24
Originality Incremental advance
AI Analysis

This addresses denoising for astronomy and medical imaging, but it appears incremental as it builds on existing total variation approaches.

The paper tackled Poisson noise in images from photon-limited systems by proposing a weighted anisotropic-isotropic total variation regularization model, resulting in improved image quality and computational efficiency compared to other methods.

Poisson noise commonly occurs in images captured by photon-limited imaging systems such as in astronomy and medicine. As the distribution of Poisson noise depends on the pixel intensity value, noise levels vary from pixels to pixels. Hence, denoising a Poisson-corrupted image while preserving important details can be challenging. In this paper, we propose a Poisson denoising model by incorporating the weighted anisotropic-isotropic total variation (AITV) as a regularization. We then develop an alternating direction method of multipliers with a combination of a proximal operator for an efficient implementation. Lastly, numerical experiments demonstrate that our algorithm outperforms other Poisson denoising methods in terms of image quality and computational efficiency.

Code Implementations1 repo
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