基于盲反卷积的超分辨率图像盲复原算法

摘要

为解决超分辨率图像盲复原问题,研究了一种广义图像降质模型及广义超分辨率图像盲复原算法模型.提出了基于TVBD的交替最小化超分辨率图像盲复原算法,并加以改进以改善复原效果;通过结合MSAA算法,提出了基于TV交替最小化的快速中值超分辨率图像盲复原算法,排除野值干扰,提高算法精度和速度;根据峰值信噪比和误差平方和,提出两种新的客观评价指标,衡量各算法的复原效果.实验表明,本文算法有效实现了超分辨率图像盲复原,并提高了复原精度.%In order to solve the problem in blind super resolution image reconstruction(BSRIR),a novel general image degradation model and a general BSRIR model were studied.A BSRIR algorithm based on total variation blind deconvolution(TVBD)and alternating minimization(AM)was proposed and modified to improve the reconstruc-tion.By combining MSAA with the algorithm mentioned above,a fast BSRIR algorithm based on TVBD and MSAA was proposed to remove the outlier effect and improve the speed and accuracy.According to peak signal to noise ra-tio(PSNR)and sum of square difference(SSD),two novel objective quality metrics were proposed to assess the BSRIR algorithms.Experimental results confirm that the proposed algorithm can achieve higher accuracy in BSRIR.