基于预填充策略的纹理合成修复  

Texture synthesis repair based on prefill strategy

作　　者：毕学慧 BI Xuehui(School of Computer and Information Engineering,Fuyang Normal Uinversity,Fuyang Anhui 236037,China)

机构地区：[1]阜阳师范大学计算机与信息工程学院,安徽阜阳236037

出　　处：《阜阳师范大学学报（自然科学版）》2022年第1期70-76,共7页Journal of Fuyang Normal University:Natural Science

基　　金：安徽省高校自然科学基金重大项目(KJ2020ZD46);校级高层次人才科研启动项目(2020KYQD0032);校级青年人才重点项目(rcxm202001);校级自然科学项目(2021FSKJ01ZD);市校合作科技专项(SXHZ202103)。

摘　　要：纹理合成技术是图像修复常采用的一种技术,但该技术在寻找结构的过程中容易受噪声、弱纹理或破损的影响,导致出现错误填补。为弥补这一缺陷,提出了基于预填充策略的纹理合成修复方法。首先,计算破损区域边界上的优先权,对优先权值排名前五的填补块进行填充,对具有最高优先权的填补块填充被认定为有效填充,其它的块修复被认定为预填充,更新填充边界;重复以上步骤,直到所有的破损区域都填充完毕。其次,为能够找到最优相似块,在计算最相似样本块的过程中,利用距离值对样本块相似性进行排序。通过理论分析和实验验证,提出的基于预填充策略的纹理合成修复方法,可以取得较为满意的修复结果。Texture synthesis technology is often used in image restoration,but it is easy to be affected by noise,weak texture or damage in the process of finding structure,resulting in error filling.In order to make up for this defect,a texture synthesis repair method based on prefilling strategy is proposed.Firstly,the priority on the boundary of the damaged area is calculated,and the top 5 filling blocks with priority weight are filled.Padding of the padding block with the highest priority is considered valid padding,and the repair of other blocks is recognized as prefilling;update the filling boundary,repeat the above steps until all damaged areas are filled.Secondly,in order to find the best similar block,the similarity of sample blocks is sorted by distance value in the process of calculating the most similar sample block.Through theoretical analysis and experimental verification,the proposed texture synthesis repair method based on prefilling strategy can achieve satisfactory repair results.

关 键 词：图像修复 纹理合成 预填充策略 样本块修复 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]