老影视资料中斑点损伤的数字修复方法  

Digital Restoration of Blotch Artifact in Archived Film and Video

作　　者：李继豪[1] 闵友钢[2] 韩军[1] 

机构地区：[1]上海大学通信与信息工程学院,上海200072 [2]上海音像资料馆,上海200051

出　　处：《计算机仿真》2009年第6期250-253,共4页Computer Simulation

基　　金：上海市教委基金项目(04AB07)

摘　　要：斑点是老影视资料中很普遍的损伤。针对斑点损伤的修复问题,提出了一种时空结合的斑点修复模型。采用双向匹配的多级运动估计方法进行运动估计。根据斑点的时间不连续特性对斑点进行粗检测,再利用斑点的空间一致特性对斑点粗检测结果进行优化。考虑斑点的大小、位置及所处背景纹理的不同,采用分类插值的方法来去除斑点。针对受损视频序列进行了实验,结果表明去除斑点的效果很好,证明方法是有效、实用且易于实现的。Blotches are common artifacts in archived film and video. This paper presents a spatio - temporal model for the restoration of blotches. Multiple hierarchical motion estimation with bidirectional matching is proposed to achieve motion estimate. The model starts with blotch detection based on temporal discontinuity of blotches to compute a coarse detection, then the coarse detection results are refined using spatial coherence of blotches. Considering various sizes, locations and backgrounds of blotches, classification interpolation method is introduced to remove the blotch. The experimental results using damaged video sequence demonstrate that the quality of restoration is high and this method is efficient, practical and easy to implement.

关 键 词：斑点修复 时空模型 分类插值 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]