摘要
亚像元动态成像技术是实现遥感器高分辨、小型化非常有效的方法。将B样条插值方法应用于亚像元动态成像,提出利用四条B样条曲线插值两幅亚像元图像的方法。该方法利用待插值点邻域范围内的十二个点做四条B样条曲线,并取其中点的算术平均值作为待插值点的像素值。利用文中推导的插值算式可方便地计算待插值点的像素值。通过仿真对提出的方法进行了验证,给出了该方法与其它几种常用插值方法的性能比较,分析结果表明,该方法较其它几种方法得到的高分辨率图像效果更佳。
The sub-pixel dynamic imaging technique is one of the effectual new methods to reduce the size of camera and improve its spatial resolution. Interpolation method for the sub-pixel images is proposed based on the B-Spline curve in the paper. The four B-Spline curves are made using twelve points and taking average value of four curves＇ midpoint as the ultimate value. The formula of interpolation is given and the method of interpolation is analyzed and compared with other kinds of methods. The validity of the interpolation method is demonstrated by means of simulation experiment. The results show that high-resolution images obtained by this method are better than that of other sub-pixel dynamic imaging methods,
出处
《光电工程》
EI
CAS
CSCD
北大核心
2006年第2期90-93,126,共5页
Opto-Electronic Engineering
基金
国家自然科学基金资助项目(60474016)
关键词
亚像元
B样条
图像插值
高分辨率图像
Sub-pixel
B-spline curve
Image interpolation
High resolution image
