%0 Journal Article
%T An Improved MRF-based Algorithm for Blotch Detection in Archived Film<br>一种改进的基于MRF模型的斑块检测算法
%A XU Jin
%A SUN Jun
%A WANG Xing-dong
%A ZHAI Guang-tao
%A <br>徐进
%A 孙军
%A 王兴东
%A 翟广涛
%J 中国图象图形学报
%D 2009
%I 
%X Blotch is one of the most common artifacts in archived film.This paper proposed an improved MRF-based blotch detection algorithm named MDV.The MDV algorithm has 3 steps.In the first step,SDIp and ROD algorithms are combined to increase the Recall rate in blotch detection.The definition of the second MRF-based step is restricted within the former result,which reduces the computational burden.The improved MRF-based algorithm then uses the combination of original frame and motion-compensated frame and the new denoising factor to reduce the false alarm rate.At the last step,spatio-temperal based matching algorithm is introduced for further refinement.The experimental results and comparative study with existing algorithms confirm that the proposed MRF method not only has higher recall rate and fewer false alarms,but also improves the computational speed significantly.
%K digital film restoration
%K blotch detection
%K Markov random field<br>数字电影
%K 修复斑块
%K 检测马尔可夫随机场
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=EDF8A3CC84E62DE8AE49968093D54258&yid=DE12191FBD62783C&vid=F3583C8E78166B9E&iid=708DD6B15D2464E8&sid=C60F9D75D8506098&eid=AAC7B2D4995BA8E4&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=7