一种亚像元遥感图像的小波复原方法

为了复原在轨卫星拍摄的退化遥感图像,以达到精确的对地观测的目的,利用交错半个像素的"亚像元"图像进行交错采样,重建成分辨率更高的的网格,然后对新建出的空格点进行小波插值估计.对插值后图像的高频进行中值滤波,融合两幅错半个像元的图像信息,最后复原成一幅地貌信息更丰富、分辨率更高的遥感图像.试验的仿真图像证明了这种小波复原方法的有效性.

A Way of Remote Sensing Image Wavelet Interpolation and Filter Based on Subpixei Technology

In order to raise spatial resolution of the remote sensing image,the two offsetting subpixel image are interplace sampled,the data of new high resolution grid are estimated by the way of wavelet interpolation,and then the median filtertechnology is combined.After denoising the high frequency with median filer technology,fusing and reconstructing two low-resolution images offsetting half a pixel into a high-resolution remote sensing image,the result of test proves that the wavelet interpolation and median filter technology is very useful.