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一种基于改进的SROD算法的电影胶片

DOI: 10.11834/jig.20081003

Keywords: 电影胶片斑块检测EM算法

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Abstract:

电影胶片由于长期存放和多次播放,产生了灰尘、污垢、霉斑、图像抖动、划痕、闪烁、噪声、变色、模糊等问题,其中由灰尘、污垢等引起的斑块是出现最频繁的损伤之一。为了快速有效地对这些斑块进行检测,提出了一种检测电影胶片斑块损伤的技术,该技术首先用改进的SROD算法对受损帧的斑块进行初步检测,然后通过两次EM估计算法对检测结果进行后处理来消除噪声的影响,同时确定斑块位置及其边缘信息。实验结果显示,该技术不仅可以有效地检测斑块,而且算法简单快速。

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