This paper investigated the existence problems of spectrum aliasing and detail lost and proposed a new novel fusion method based on the nonsubsmapled contourlet transform(NSCT).It adopted the new decomposition of NSCT,which built upon nonsubsampled pyramids and nonsubsampled directional filter banks for extracting the geometric information of images.It proposed the high-frequency coefficient fusion rules by combination of direction vector and contrast,and proposed the low-frequency fusion rule based on the ...