基于人类视觉的图像质量评价的定量研究  

Quantitative study on image quality evaluation based on human vision

作　　者：兰璞[1] 王杨[1] 夏克文[1] 安鹏飞[1] 

机构地区：[1]河北工业大学信息工程学院,天津300401

出　　处：《电子设计工程》2014年第9期89-93,共5页Electronic Design Engineering

基　　金：国家自然科学基金(60972106;51208168);天津市自然科学基金(11JCYBJC00900);河北省自然科学基金(F2013202254;F2013202102);河北省引进留学人员基金(C2012003038)

摘　　要：随着人们对视觉成像质量要求的不断提高,成像质量评价方法的地位也随之升高,而对比敏感度CSF是检测视功能的重要指标。本文研究了大瞳孔下不同Zernike组分高级像差与CSF的关系:高级像差、矫正第三级的高级像差、矫正第三、四级的高级像差、彗差、球差、三叶草6种情况下的CSF曲线图,定量地分析了在不同频率处CSF的变化规律。结果表明:RMS值与CSF曲线的变化趋势是呈负相关的;在空间频率为7 cpd和13 cpd时,高级像差、矫正第三级的高级像差、矫正第三、四级的高级像差后的CSF值分别为62和24.58、64.5和25.97、67.29和29.39,说明三、四级高级像差对CSF的递减变化都起到一定的积极作用,且第四级影响较大;彗差、球差、三叶草对CSF的影响不容忽视,在空间频率为7 cpd和13 cpd时,彗差、球差、三叶草的CSF值分别为82.03和34.81、85.64和35.85、85.96和36.18。Senior aberration is one of the important factors which affects the human eye vision quality,contrast sensitivity function is an important index of visual function.In this paper,Relationships were studied between different Zernike components and CSF under the large pupil case：senior aberration,the senior aberrations after correcting the third grade senior aberration,the senior aberrations after correcting the third and fourth senior aberration,coma,spherical aberration,clover six cases of CSF curve,and the change laws of CSF in different frequency were analyzed quantitatively.The results show that the RMS value and the change of the CSF curve trend is negatively correlated;when the spatial frequency is 7cpd and 13cpd,senior aberration、the senior aberrations after correcting the third grade senior aberration、the senior aberrations after correcting the third and fourth senior aberration value of CSF were 62 and 24.58,64.5 and 25.97,64.5 and 25.97,which shows that the third and fourth senior aberration have played a positive role in the decreasing CSF,and the fourth influence is greater;In the spatial frequency 7 and 13 cpd,coma,spherical aberration,clover CSF values were 82.03 and 34.81,82.03 and 34.81,85.96 and 36.18.

关 键 词：高级像差 CSF 彗差 球差 三叶草 

分 类 号：TN06[电子电信—物理电子学]