| 张姣,李俊山,李成,胡双演,汪晓建.基于低秩稀疏分解的湍流退化图像序列的盲去卷积算法[J].光电子激光,2015,26(7):1374~1380 |
| 基于低秩稀疏分解的湍流退化图像序列的盲去卷积算法 |
| A multi-frame blind deconvolution algorithm based on low-rank decomposition for turbulence-degraded images |
| 投稿时间：2015-01-13 |
| DOI： |
| 中文关键词: 图像高复原 低秩分解 非增广拉格朗日乘子法(IALM) 大气湍流退化 |
| 英文关键词:low-rank decomposition inexact augmented Lagrange multiplier (IALM) turbu lence-degraded pixel distorted multi-frame blind restoration |
| 基金项目:国家自然科学基金(61175120)资助项目 (1.第二炮兵工程大学,陕西 西安 710025； 2.武警工程大学,陕西 西安 710086) |
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| 中文摘要: |
| 针对湍流退化图像序列存在像偏移、像抖动和像 模糊的问题,提出一种基于低秩稀疏分解和多帧去 卷积的图像复原算法。首先分析大气湍流下图像序列的退化特征,然后在低秩稀疏分解的思 想下,采用非增广拉格朗日乘子(IALM)法优化由低秩 矩阵的核范数和稀疏 矩阵的Frobenius范数之和构成的目标函数,将湍流退化序列分解为低秩稳像和稀疏湍流两 部分；最后利用 多帧去卷积算法复原对齐的稳像。实验结果表明,本文算法能够有效校 正湍流像素偏移,在提高复原质量和速度方面取得了明显的效果。 |
| 英文摘要: |
| In order to correct pixel distortion and reduce time-varying blur,a novel blind restoration algorithm based on low-rank decomposition is proposed in this paper,which is capable of r estoring a high-quality image from the turbulence-degraded image sequence.The paper firstly analyzes the infrared imag e characteristics at the atmospheric turbulence.Next,it decomposes the turbulence sequence into two comp onents of the stabilized background,the turbulence and noise through low-rank decomposition.The decom position is simplified into a minimization of nuclear norm and Frobenius norm,optimized by inexact augmented Lagrange multiplier (IALM).Finally, a multi-frame blind deconvolution algorithm is implemented to deblur the stabil ized images,generating the final output.Experimental results verify the effectiveness of the algorithm.I t can effectively alleviate blur and distortions,improve visual quality and recovery speed significantly. |
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