一种四阶P-Laplace图像盲复原方法A Method for Fourth-Order P-Laplace Blind Image Restoration
刘琨,王国宇,姬婷婷
摘要(Abstract):
针对TV图像复原方法中产生的阶梯效应问题,结合传统的差值范数图像复原方法,提出一种四阶P-Laplace图像盲复原算法。该算法将四阶偏微分方程引入P-Laplace图像复原方法中,对图像的边缘和内部平滑区域做了分别处理以缓解TV复原方法中带来的阶梯效应,同时引入参数λ调节复原过程中的保真项,并对偏微分方程做单调灰度变化,进一步改善了图像复原效果,缓解了阶梯效应。实验结果证明,该算法对模糊图像有很好的复原效果,也适用于水下图像和雾天图像的图像复原。
关键词(KeyWords): 图像复原;TV复原;P-Laplace;四阶PDE;阶梯效应
基金项目(Foundation): 水下图像的后向散射噪声抑制及其盲复原方法研究项目(60772058)资助
作者(Author): 刘琨,王国宇,姬婷婷
DOI: 10.16441/j.cnki.hdxb.2014.09.015
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