摘要
在详细分析使用微扫描技术减少混淆效应的基础上,给出一种利用微扫描技术进行空间分辨率影响分析的像素传递函数(PTF)方法,并基于2×2和4×4两种微扫描形式对该函数进行分析计算和讨论。计算结果表明,在焦平面阵列给定的情况下,微扫描技术能适当提高焦平面空间的分辨率,有效减小图像混淆,明显改善成像质量。指出在没有高空间分辨率成像器件的情况下,利用微扫描技术和低分辨率成像器件来获得较高空间分辨率的图像是完全可能的。
The pixel transfer function （PTF） for analyzing micro-scanning technology＇s effect on spatial resolution is given based on the detailed analyses of the aliasing effect decreased by the micro-scanning technology. The analysis, calculation and discussion on PTF are carried out for two modes of micro-scanning （2× 2, 4 × 4）. The result shows that the micro-scanning technology can increase the focal plane spatial resolution, decrease the image aliasing effectively and improve the imaging quality significantly for FPA thermal imager. It is pointed out that even if high-spatial-resolution imaging device is not available, high spatial resolution images can still be obtained with low-resolution imaging devices by utilizing the micro-scanning technology.
出处
《应用光学》
CAS
CSCD
2006年第5期394-399,共6页
Journal of Applied Optics
