Bayesian Despeckling of Structured Sources

• URL: http://arxiv.org/abs/2501.11860v2
• Date: Thu, 30 Jan 2025 16:16:49 GMT
• Title: Bayesian Despeckling of Structured Sources
• Authors: Ali Zafari, Shirin Jalali,
• Abstract summary: despeckling algorithms have been developed for applications such as Synthetic Aperture Radar (SAR) and digital holography. We propose a method applicable to general structured stationary sources. The proposed depseckler achieves better reconstruction performance with no strong simplification of the ground truth signal model or speckle noise.
• Score: 6.936698849312721
• License:
• Abstract: Speckle noise is a fundamental challenge in coherent imaging systems, significantly degrading image quality. Over the past decades, numerous despeckling algorithms have been developed for applications such as Synthetic Aperture Radar (SAR) and digital holography. In this paper, we aim to establish a theoretically grounded approach to despeckling. We propose a method applicable to general structured stationary stochastic sources. We demonstrate the effectiveness of the proposed method on piecewise constant sources. Additionally, we theoretically derive a lower bound on the despeckling performance for such sources. The proposed depseckler applied to the 1-Markov structured sources achieves better reconstruction performance with no strong simplification of the ground truth signal model or speckle noise.

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