基于时空域特征的垂直划痕检测与修复

为检测与修复旧电影中常见的垂直划痕，分析垂直划痕在单帧和相邻帧图像的时域和空域特性。在分析垂直划痕形成原因、特征和微分运算基本原理的基础上，提出一种基于时空域特征的垂直划痕检测与修复算法。实验结果表明，该算法能有效地检测旧电影中的垂直划痕，并能够准确地修复垂直划痕处丢失的图像信息，经该算法修复后的旧电影具有较好的视觉效果。

Scratch Line Detection and Restoration Based on Spatial-temporal Features

To detect and remove the scratch line which is common on old movies, spatial-temporal property in the same frame and adjacent frame is analyzed. After analyzing causes of emergence and characteristics of scratch line and basic principles of differential operation, a scratch line detection and restoration algorithm based on spatial-temporal features is proposed. Experimental results show that the algorithm can effectively detect the scratch line on old movies, and be able to accurately fix the missing data where scratch line original exists. Old movies have a better visual effect after restoration.