车辆运动模糊图像分块恢复的新方法  

New method of block-restoration for motor-vehicle blurred images

作　　者：李宇成[1] 余海桃[1] 王目树[1] 

机构地区：[1]北方工业大学机电工程学院,北京100144

出　　处：《计算机应用》2012年第4期1108-1112,1115,共6页journal of Computer Applications

摘　　要：利用维纳滤波进行真实运动模糊图像恢复的过程中,振铃效应和局部恢复不理想的现象严重影响恢复结果,通过理论分析、实验对比以及研究真实运动模糊过程的特点,找出了问题发生的主要原因。提出采用人工边界补偿和分块恢复的方法来抑制振铃和局部不理想的现象,并给出了模糊参数与空间位置和速度的关系以及具体的分块策略。实验结果表明,所提出的边界补偿和分块恢复方法能很好地减少振铃效应,并保持整体图像恢复效果的一致性。During the restoration of actual motion blurred images based on Wiener filtering,restoration results get affected by serious ringing effect and unsatisfactory local restoration.Its main reasons were found through theoretical analysis,experimental comparisons and the study of the characteristics of the actual motion blurring process.It was proposed that the artificial boundary compensation and block-restoration were used to restrain ringing effect and local unsatisfactory restoration.The relations of blur parameters,space positions and speeds,even the standard of blocking partition were given.The experimental results verify that the proposed method of the boundary compensation and the block-restoration can effectively reduce ringing effect and maintain the consistency of the overall image restoration effect.

关 键 词：维纳滤波 运动模糊 振铃效应 模糊过程 模糊参数 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]