基于子带相似性分析的JPEG2000图像无参考质量评价  

No Reference Image Quality Assessment Based on Subbands Similarity and Statistical Analysis for JPEG2000

作　　者：郭迎春[1] 于明[1] Zhu Qiu-ming 

机构地区：[1]河北工业大学计算机科学与软件学院,天津300130 [2]University of Nebraska at Omaha,Omaha,USA 68182-0500

出　　处：《电子与信息学报》2011年第6期1496-1500,共5页Journal of Electronics & Information Technology

基　　金：国家自然科学基金青年基金(60203018);河北省教育厅自然科学基金重点项目(ZD200911);河北省教育厅自然科学基金项目2009年第2批第10项资助课题

摘　　要：无失真图像中相邻尺度同一方向子带的小波系数是相互关联的,而编码压缩使得这种相关性随着压缩率而变化的。该文采用余弦相似性来模拟相邻尺度同方向子带图像的相关性,根据提取的子带相似性特征矢量和统计工具来分析人的主观质量评价得分MOS(Mean Opinion Scores)与子带余弦相似性的关系,得到了一种新的无参考质量模型。实验结果显示该文提出的JPEG2000无参考质量评价方法与MOS具有较高的相关性,而且复杂度低,运行时间少。For undistorted images, the wavelet coefficients of between-scale coefficients in the same orientation are correlated, while compression coding reduce the correlation. Cosine similarity is used in this work to model the correlation of between-scale subbands, and statistical regression is applied to analyze the relationship between human subjective assessment Mean Opinion Scores （MOS） and subbands cosine similarity. The accurate quality model is obtained by regression analysis. Experimental results show that the proposed no-reference method has a high correlation with the MOS measurement, and a considerably lower computational complexity and less run time.

关 键 词：图像处理 无参考图像质量评价 余弦相似 统计分析 JPEG2000 

分 类 号：TN911.73[电子电信—通信与信息系统]