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图像结构失真的编码质量评价

DOI: 10.11834/jig.20090815

Keywords: 图像质量评价,匹配追逐,图像结构,图像编码

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Abstract:

客观图像质量评价方法――自动评价图像质量使其与主观感受一致,对于很多图像和视频处理应用特别是图像编码具有重要意义。提出了一种基于结构失真的图像编码质量客观评价方法。首先根据匹配追逐算法将参考图像在基函数上进行投影分解按照重要性排列获得结构信息,并给出结构重要性度量,然后利用该信息计算编码图像的结构信息,比较编码前后结构信息的差异作为客观质量评价度量,其中在匹配追逐算法中,选取了2维可分离的Gabor基函数集作为字典。实验结果显示,上述方法与主观质量评价值有很好的一致性。

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