菜单

关于 🐙 GitHub
arXiv 提交日期: 2026-04-21
📄 Abstract - Framelet-Based Blind Image Restoration with Minimax Concave Regularization

Recovering corrupted images is one of the most challenging problems in image processing. Among various restoration tasks, blind image deblurring has been extensively studied due to its practical importance and inherent difficulty. In this problem, both the point spread function (PSF) and the underlying latent sharp image must be estimated simultaneously. This problem cannot be solved directly due to its ill-posed nature. One powerful tool for solving such problems is total variation (TV) regularization. The $\ell_0$-norm regularization within the TV framework has been widely adopted to promote sparsity in image gradients or transform domains, leading to improved preservation of edges and fine structures. However, the use of the $\ell_0$-norm results in a highly nonconvex and computationally intractable optimization problem, which limits its practical applicability. To overcome these difficulties, we employ the minimax concave penalty (MCP), which promotes enhanced sparsity and provides a closer approximation to the $\ell_0$-norm. In addition, a reweighted $\ell_1$-norm regularization is incorporated to further reduce estimation bias and improve the preservation of fine image details and textures. After introducing the proposed model, a numerical algorithm is developed to solve the resulting optimization problem. The effectiveness of the proposed approach is then demonstrated through experimental evaluations on several test images.

顶级标签: computer vision
详细标签: blind image deblurring minimax concave penalty total variation regularization image restoration sparsity 或 搜索:

基于小波框架与极小极大凹正则化的盲图像恢复 / Framelet-Based Blind Image Restoration with Minimax Concave Regularization


1️⃣ 一句话总结

本文提出一种新的盲图像去模糊方法,通过引入极小极大凹罚函数(MCP)来更精确地逼近稀疏约束,同时结合重加权ℓ₁范数正则化,从而在未知模糊核的情况下,更好地恢复图像边缘和细节纹理,并解决了传统ℓ₀范数带来的计算困难问题。

源自 arXiv: 2604.19314