计算机科学 ›› 2016, Vol. 43 ›› Issue (4): 290-293.doi: 10.11896/j.issn.1002-137X.2016.04.059
胡然,郭成城,杨剑锋
HU Ran, GUO Cheng-cheng and YANG Jian-feng
摘要： 将局部像素组主成分分析算法引入到视频去噪领域,并利用三维块匹配算法保持了视频序列的相关性,对视频中的噪声进行抑制。用三维块匹配视频去噪算法中小波阈值去噪得到的图像替换二阶局部像素组主成分分析中的第一阶处理得到的图像,这样可以避免局部像素组主成分分析算法直接处理视频时产生的局部效应。最后,局部像素组主成分分析算法也抑制了三维块匹配算法中的小波阈值去噪结果中产生的画面不平滑的问题。实验结果表明,本算法较好地将主成分分析算法引入到了视频去噪领域,同时较好地解决了三维块匹配视频去噪算法中小波阈值去噪的块效应问题,主客观指标的比较也表明本算法有较为优秀的去噪效果。
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