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电影胶片中霉斑噪声的数字处理技术
引用本文:蒋雯丽,郑世宝.电影胶片中霉斑噪声的数字处理技术[J].中国图象图形学报,2007,12(10):1926-1930.
作者姓名:蒋雯丽  郑世宝
作者单位:上海交通大学电子工程系图像通信与信息处理研究所 上海200240(蒋雯丽),上海交通大学上海市数字媒体处理与传输重点实验室 上海200240(郑世宝)
摘    要:针对电影霉斑噪声的修复问题,建立了一种自适应平滑修复模型。该模型专门针对噪声特性设计了双向匹配度算法。该算法能不加任何逻辑判断,即可自适应地根据噪声的污染情况找到需要的运动矢量。该模型利用韦伯比设立的噪声检测模型,不仅具有较高的灵敏度和准确度,同时利用膨胀算法解决了噪声的边缘修复问题。针对真实视频序列进行的实验结果表明,去噪效果较好,可见该算法是有效性的。

关 键 词:霉斑噪声  自适应检测  韦伯比  三步搜索
文章编号:1006-8961(2007)10-1926-05
修稿时间:6/1/2007 12:00:00 AM

Digital Processing of the Blotch in Cinefilms
JIANG Wen-li,ZHENG Shi-bao and JIANG Wen-li,ZHENG Shi-bao.Digital Processing of the Blotch in Cinefilms[J].Journal of Image and Graphics,2007,12(10):1926-1930.
Authors:JIANG Wen-li  ZHENG Shi-bao and JIANG Wen-li  ZHENG Shi-bao
Affiliation:Institute of Image Communication and Information Processing, Department of Electronic Engineering Shanghai Jiaotong University, Shanghai 200240;2. Shanghai Key Laboratory of Digital Media Processing and Transmissions, Shanghai Jiaotong University, Shangh
Abstract:Self-adaptive Smooth Corrector model(SASC) is proposed for the restoration of the blotch.An algorithm,named bidirectional matching,is designed for motion estimation in the restoration specially.Without making judgment,this algorithm can detect the suitable motion direction on different situations of noise occupation.The Weber ratio is used to make the noise detector to be sensitive and accurate and the bulge algorithm is used to deal with the edge-problem of the noise.Experimental results using video sequence with real film have demonstrated the availability of the method.
Keywords:blotch noise  self-adapting detect  Weber ratio  three step search
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