CAJ | 학술논문

针对嫦娥一号(CE-1)干涉成像光谱仪影像中的条带噪音,通过常用的频域滤波方法和线性插值法进行了干涉成像光谱仪条带去除试验,并提出结合了三阶插值的改进线性插值方法.对噪音点定位后,根据图像中噪音点上下行相应点的数值差别是否超过预设阈值,确定是采用线性插值还是三阶插值算法,修正噪音点像素值.实验结果的均值和标准偏差以及图像质量因子(IQ因子)的比较表明:改进的方法IQ值达到13.908 1,而线性插值算法为9.842 8,改进的线性插值方法在去除干涉成像光谱仪影像条带噪音方面明显优于线性插值方法.
침대항아일호(CE-1)간섭성상광보의영상중적조대조음,통과상용적빈역려파방법화선성삽치법진행료간섭성상광보의조대거제시험,병제출결합료삼계삽치적개진선성삽치방법.대조음점정위후,근거도상중조음점상하행상응점적수치차별시부초과예설역치,학정시채용선성삽치환시삼계삽치산법,수정조음점상소치.실험결과적균치화표준편차이급도상질량인자(IQ인자)적비교표명:개진적방법IQ치체도13.908 1,이선성삽치산법위9.842 8,개진적선성삽치방법재거제간섭성상광보의영상조대조음방면명현우우선성삽치방법.
Aiming at the striping noise existing in IIM (the Imaging Interferometer carried by Chang'E Lunar Orbiter) data,the Fourier transform algorithm and the linear interpolation algorithm are experimentally utilized for strip noise removal in IIM images.A modified linear interpolation algorithm is proposed,which combines low rank algorithm with high rank algorithm.After noise location,high rank interpolation or linear interpolation is used by judging whether the pixel difference between the upper and lower lines goes up to the threshold.Comparison of mean values,standard deviations,and the IQ (Image Quality) factor shows that this modified method is evidently superior to the linear algorithm because the IQ factor of two methods is respectively 13.908 and 19.842 8.