基于色彩空间自然场景统计的无参考图像质量评价

李俊峰

doi:10.16383/j.aas.2015.c140616

基于色彩空间自然场景统计的无参考图像质量评价

doi: 10.16383/j.aas.2015.c140616

李俊峰

1.
浙江理工大学自动化研究所杭州 310018

基金项目:

国家自然科学基金(61374022),浙江省新型网络标准及其应用技术重点实验室开放课题(2013E10012)资助

详细信息

作者简介:
李俊峰浙江理工大学机械与自动控制学院副教授.2010年获得东华大学工学博士学位.主要研究方向为图像质量评价,图像融合.E-mail:ljf2003@zstu.edu.cn

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出版历程
- 收稿日期: 2014-09-02
- 修回日期: 2015-04-28
- 刊出日期: 2015-09-20

No-reference Image Quality Assessment Based on Natural Scene Statistics in RGB Color Space

LI Jun-Feng

1.
Institute of Automation, Zhejiang Sci-Tech University, Hangzhou 310018

Funds:

Supported by National Natural Science Foundation of China (61374022), Zhejiang Provincial Key Laboratory of New Network Standards and Technologies (2013E10012)

摘要

摘要: RGB色彩空间中各色彩分量间存在强相关性, 图像发生失真会改变各分量间的相关性. 基于此, 本文提出了一种新的通用无参考图像质量评价方法. 首先, 根据人类视觉对RGB色彩空间中绿色分量更为敏感的颜色感知特性, 提取了G分量MSCN系数及其4方向邻域系数的统计特征; 其次, 在分析RGB色彩空间中R、G及B分量间相关性的基础上, 分别计算RGB色彩空间各色彩分量及其纹理、相位间的互信息, 利用互信息作为统计特征来描述其各分量间的相关性; 进而, 结合上述统计特征, 分别利用SVR和SVC构建无参考图像质量评价模型和图像失真类型识别模型; 最后, 在LIVE、CSIQ 及TID2008图像质量评价数据库上进行了算法与DMOS (Different mean opinion score)的相关性、失真类型识别及计算复杂性等方面的实验. 实验结果表明, 本文方法的评价结果与人类主观评价具有高度的一致性, 在LIVE 数据库上的斯皮尔曼等级相关系数和皮尔逊线性相关系数均在0.942以上; 而且, 图像失真类型识别模型的识别准确率也高达93.59%, 明显高于当今主流无参考图像质量评价方法.
- 无参考图像质量评价 /
- 自然场景统计 /
- RGB色彩空间 /
- 互信息
Abstract: There are strong correlations between the color components in the RGB color space, and distorted images can change those correlations. Based on this, a novel general-purpose no-reference image quality assessment (NR-IQA) method is proposed. Firstly, according to the color perception characteristic that human vision is more sensitive to the green component in the RGB color space, the statistical features of MSCN coefficient and its four neighboring coefficients of the G component are extracted. Secondly, on the basis of the correlation analysis between R、G and B components in RGB color space, the mutual information between the color components in RGB color space, their textures and their phases are calculated respectively. The statistical features of mutual information are used to describe the correlation between the color components in the RGB color space. Moreover, based on the aforementioned statistical features, support vector regression (SVR) and support vector classifier (SVC) are used to construct a NR-IQA model and image distortion type recognition model, respectively. At last, in order to analyze the correlation with different mean opinion score (DMOS), classification accuracy and computational complexity, a large number of simulation experiments are carried out in the LIVE, CSIQ and TID2008 image quality evaluation databases. Simulation results show that this method is suitable for many common distortions and consistent with subjective assessment, and that the Spearman's rank ordered correlation coefficient (SROCC) and the Pearson's linear correlation coefficient (PLCC) in LIVE image quality evaluation database are more than 0.942. In addition, the recognition accuracy of the recognition model is up to 93.59% and significantly superior to all present-day distortion-generic NR-IQA methods.
- No-reference image quality assessment /
- natural scene statistics /
- RGB color space /
- mutual information

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参考文献(28)

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基于色彩空间自然场景统计的无参考图像质量评价

doi: 10.16383/j.aas.2015.c140616

作者简介:
李俊峰浙江理工大学机械与自动控制学院副教授.2010年获得东华大学工学博士学位.主要研究方向为图像质量评价,图像融合.E-mail:ljf2003@zstu.edu.cn

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No-reference Image Quality Assessment Based on Natural Scene Statistics in RGB Color Space

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基于色彩空间自然场景统计的无参考图像质量评价

doi: 10.16383/j.aas.2015.c140616

作者简介: 李俊峰 浙江理工大学机械与自动控制学院副教授.2010年获得东华大学工学博士学位.主要研究方向为图像质量评价,图像融合.E-mail:ljf2003@zstu.edu.cn

计量

出版历程

No-reference Image Quality Assessment Based on Natural Scene Statistics in RGB Color Space

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出版历程

目录

作者简介:
李俊峰浙江理工大学机械与自动控制学院副教授.2010年获得东华大学工学博士学位.主要研究方向为图像质量评价,图像融合.E-mail:ljf2003@zstu.edu.cn