摘要
为改善运动模糊图像盲复原的效果,解决伪影显著、鲁棒性差、各尺度由于迭代次数固定而产生不利核估计的问题,提出一种联合正则化与低秩先验的自适应迭代盲图像复原算法。首先,利用l0正则化先验的稀疏性估计中间复原图像和有效去除伪影,同时引入低秩先验抑制潜像恢复过程中的噪声干扰,提高模糊核估计的准确性;然后,针对多尺度迭代次数问题采用自适应策略,通过评估模糊核的相似性调整各尺度下的迭代次数;最后,用基于半二次分裂的交替优化策略求解本算法模型,利用非盲去模糊方法得到最终清晰图像。结果表明,本文算法能有效抑制噪声和伪影,鲁棒性好,并具有良好的复原效果。
In order to improve the effect of blind restoration of motion blur images and solve the problems of obvious artifacts,poor robustness,and unfavorable kernel estimation due to fixed iteration number at various scales,an adaptive iterative blind image restoration algorithm based on combining regularization and lowrank prior was proposed.Firstly,the sparseness of l0 regularized prior was used to estimate the intermediate restored image and effectively remove the artifacts.Meanwhile,a low-rank prior was introduced to suppress the noise interference in the process of latent image restoration and improve the accuracy of blur kernel estimation.Secondly,an adaptive strategy was adopted to evaluate the similarity of blur kernel to adjust the number of iterations at different scales.Finally,an alternative optimization strategy based on semi-quadratic splitting was used to solve the algorithm model,and the final clear image was obtained by non-blind deblurring method.Experimental results showed that the proposed algorithm can effectively suppress noise and artifacts,and had good robustness and good restoration effect.
作者
高如新
朱新柳
吴中华
谭兴国
GAO Ruxin;ZHU Xinliu;WU Zhonghua;TAN Xingguo(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,Henan,China;Henan Key Laboratory of Intelligent Detection and Control of Coal Mine Equipment,Jiaozuo 454000,Henan,China;Henan International Joint Laboratory of Direct Drive and Control of Intelligent Equipment,Jiaozuo 454000,Henan,China;Hami Polytechnic,Hami 839000,Xinjiang,China)
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2023年第5期137-143,共7页
Journal of Henan Polytechnic University（Natural Science）
基金
国家自然科学基金资助项目(61903126)
河南省科技攻关项目(212102210503)
新疆维吾尔自治区人才发展专项资金支持项目(202102)
新疆维吾尔自治区自然科学基金地州基金资助项目(2022D01F46)。
关键词
图像盲复原
l0正则化
低秩先验
自适应迭代
模糊核估计
blind image deblurring
l0regularization
low rank prior
adaptive iteration
blur kernel estimation
